Measurement of resonant and $CP$ components in $\overline{B}_s^0\rightarrow J/ψπ^+π^-$ decays
ArXiv 1402.6248 (2014)
Authors:
LHCb collaboration, R Aaij, B Adeva, M Adinolfi, A Affolder, Z Ajaltouni, J Albrecht, F Alessio, M Alexander, S Ali, G Alkhazov, P Alvarez Cartelle, AA Alves, S Amato, S Amerio, Y Amhis, L Anderlini, J Anderson, R Andreassen, M Andreotti, JE Andrews, RB Appleby, O Aquines Gutierrez, F Archilli, A Artamonov, M Artuso, E Aslanides, G Auriemma, M Baalouch, S Bachmann, JJ Back, A Badalov, V Balagura, W Baldini, RJ Barlow, C Barschel, S Barsuk, W Barter, V Batozskaya, Th Bauer, A Bay, J Beddow, F Bedeschi, I Bediaga, S Belogurov, K Belous, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, J Benton, A Berezhnoy, R Bernet, M-O Bettler, M van Beuzekom, A Bien, S Bifani, T Bird, A Bizzeti, PM Bjørnstad, T Blake, F Blanc, J Blouw, S Blusk, V Bocci, A Bondar, N Bondar, W Bonivento, S Borghi, A Borgia, M Borsato, TJV Bowcock, E Bowen, C Bozzi, T Brambach, J van den Brand, J Bressieux, D Brett, M Britsch, T Britton, NH Brook, H Brown, A Bursche, G Busetto, J Buytaert, S Cadeddu, R Calabrese, O Callot, M Calvi, M Calvo Gomez, A Camboni, P Campana, D Campora Perez, F Caponio, A Carbone, G Carboni, R Cardinale, A Cardini, H Carranza-Mejia, L Carson, K Carvalho Akiba, G Casse, L Cassina, L Castillo Garcia, M Cattaneo, Ch Cauet, R Cenci, M Charles, Ph Charpentier, S-F Cheung, N Chiapolini, M Chrzaszcz, K Ciba, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, C Coca, V Coco, J Cogan, E Cogneras, P Collins, A Comerma-Montells, A Contu, A Cook, M Coombes, S Coquereau, G Corti, I Counts, B Couturier, GA Cowan, DC Craik, M Cruz Torres, S Cunliffe, R Currie, C D'Ambrosio, J Dalseno, P David, PNY David, A Davis, I De Bonis, K De Bruyn, S De Capua, M De Cian, JM De Miranda, L De Paula, W De Silva, P De Simone, D Decamp, M Deckenhoff, L Del Buono, N Déléage, D Derkach, O Deschamps, F Dettori, A Di Canto, H Dijkstra, S Donleavy, F Dordei, M Dorigo, P Dorosz, A Dosil Suárez, D Dossett, A Dovbnya, F Dupertuis, P Durante, R Dzhelyadin, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, U Eitschberger, R Ekelhof, L Eklund, I El Rifai, Ch Elsasser, S Esen, A Falabella, C Färber, C Farinelli, S Farry, D Ferguson, V Fernandez Albor, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, M Fiore, M Fiorini, C Fitzpatrick, M Fontana, F Fontanelli, R Forty, O Francisco, M Frank, C Frei, M Frosini, J Fu, E Furfaro, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, Y Gao, J Garofoli, J Garra Tico, L Garrido, C Gaspar, R Gauld, L Gavardi, E Gersabeck, M Gersabeck, T Gershon, Ph Ghez, A Gianelle, S Giani', V Gibson, L Giubega, VV Gligorov, C Göbel, D Golubkov, A Golutvin, A Gomes, H Gordon, M Grabalosa Gándara, R Graciani Diaz, LA Granado Cardoso, E Graugés, G Graziani, A Grecu, E Greening, S Gregson, P Griffith, L Grillo, O Grünberg, B Gui, E Gushchin, Yu Guz, T Gys, C Hadjivasiliou, G Haefeli, C Haen, TW Hafkenscheid, SC Haines, S Hall, B Hamilton, T Hampson, S Hansmann-Menzemer, N Harnew, ST Harnew, J Harrison, T Hartmann, J He, T Head, V Heijne, K Hennessy, P Henrard, L Henry, JA Hernando Morata, E van Herwijnen, M Heß, A Hicheur, D Hill, M Hoballah, C Hombach, W Hulsbergen, P Hunt, N Hussain, D Hutchcroft, D Hynds, M Idzik, P Ilten, R Jacobsson, A Jaeger, E Jans, P Jaton, A Jawahery, F Jing, M John, D Johnson, CR Jones, C Joram, B Jost, N Jurik, M Kaballo, S Kandybei, W Kanso, M Karacson, TM Karbach, M Kelsey, IR Kenyon, T Ketel, B Khanji, C Khurewathanakul, S Klaver, O Kochebina, I Komarov, RF Koopman, P Koppenburg, M Korolev, A Kozlinskiy, L Kravchuk, K Kreplin, M Kreps, G Krocker, P Krokovny, F Kruse, M Kucharczyk, V Kudryavtsev, K Kurek, T Kvaratskheliya, VN La Thi, D Lacarrere, G Lafferty, A Lai, D Lambert, RW Lambert, E Lanciotti, G Lanfranchi, C Langenbruch, B Langhans, T Latham, C Lazzeroni, R Le Gac, J van Leerdam, J-P Lees, R Lefèvre, A Leflat, J Lefrançois, S Leo, O Leroy, T Lesiak, B Leverington, Y Li, M Liles, R Lindner, C Linn, F Lionetto, B Liu, G Liu, S Lohn, I Longstaff, JH Lopes, N Lopez-March, P Lowdon, H Lu, D Lucchesi, H Luo, E Luppi, O Lupton, F Machefert, IV Machikhiliyan, F Maciuc, O Maev, S Malde, G Manca, G Mancinelli, M Manzali, J Maratas, U Marconi, C Marin Benito, P Marino, R Märki, J Marks, G Martellotti, A Martens, A Martín Sánchez, M Martinelli, D Martinez Santos, F Martinez Vidal, D Martins Tostes, A Massafferri, R Matev, Z Mathe, C Matteuzzi, A Mazurov, M McCann, J McCarthy, A McNab, R McNulty, B McSkelly, B Meadows, F Meier, M Meissner, M Merk, DA Milanes, M-N Minard, J Molina Rodriguez, S Monteil, D Moran, M Morandin, P Morawski, A Mordà, MJ Morello, R Mountain, F Muheim, K Müller, R Muresan, B Muryn, B Muster, P Naik, T Nakada, R Nandakumar, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, AD Nguyen, TD Nguyen, C Nguyen-Mau, M Nicol, V Niess, R Niet, N Nikitin, T Nikodem, A Novoselov, A Oblakowska-Mucha, V Obraztsov, S Oggero, S Ogilvy, O Okhrimenko, R Oldeman, G Onderwater, M Orlandea, JM Otalora Goicochea, P Owen, A Oyanguren, BK Pal, A Palano, F Palombo, M Palutan, J Panman, A Papanestis, M Pappagallo, L Pappalardo, C Parkes, CJ Parkinson, G Passaleva, GD Patel, M Patel, C Patrignani, C Pavel-Nicorescu, A Pazos Alvarez, A Pearce, A Pellegrino, M Pepe Altarelli, S Perazzini, E Perez Trigo, P Perret, M Perrin-Terrin, L Pescatore, E Pesen, G Pessina, K Petridis, A Petrolini, E Picatoste Olloqui, B Pietrzyk, T Pilař, D Pinci, A Pistone, S Playfer, M Plo Casasus, F Polci, A Poluektov, E Polycarpo, A Popov, D Popov, B Popovici, C Potterat, A Powell, J Prisciandaro, A Pritchard, C Prouve, V Pugatch, A Puig Navarro, G Punzi, W Qian, B Rachwal, JH Rademacker, B Rakotomiaramanana, M Rama, MS Rangel, I Raniuk, N Rauschmayr, G Raven, S Reichert, MM Reid, AC dos Reis, S Ricciardi, A Richards, K Rinnert, V Rives Molina, DA Roa Romero, P Robbe, DA Roberts, AB Rodrigues, E Rodrigues, P Rodriguez Perez, S Roiser, V Romanovsky, A Romero Vidal, M Rotondo, J Rouvinet, T Ruf, F Ruffini, H Ruiz, P Ruiz Valls, G Sabatino, JJ Saborido Silva, N Sagidova, P Sail, B Saitta, V Salustino Guimaraes, B Sanmartin Sedes, R Santacesaria, C Santamarina Rios, E Santovetti, M Sapunov, A Sarti, C Satriano, A Satta, M Savrie, D Savrina, M Schiller, H Schindler, M Schlupp, M Schmelling, B Schmidt, O Schneider, A Schopper, M-H Schune, R Schwemmer, B Sciascia, A Sciubba, M Seco, A Semennikov, K Senderowska, I Sepp, N Serra, J Serrano, P Seyfert, M Shapkin, I Shapoval, Y Shcheglov, T Shears, L Shekhtman, O Shevchenko, V Shevchenko, A Shires, R Silva Coutinho, G Simi, M Sirendi, N Skidmore, T Skwarnicki, NA Smith, E Smith, E Smith, J Smith, M Smith, H Snoek, MD Sokoloff, FJP Soler, F Soomro, D Souza, B Souza De Paula, B Spaan, A Sparkes, F Spinella, P Spradlin, F Stagni, S Stahl, O Steinkamp, S Stevenson, S Stoica, S Stone, B Storaci, S Stracka, M Straticiuc, U Straumann, R Stroili, VK Subbiah, L Sun, W Sutcliffe, S Swientek, V Syropoulos, M Szczekowski, P Szczypka, D Szilard, T Szumlak, S T'Jampens, M Teklishyn, G Tellarini, E Teodorescu, F Teubert, C Thomas, E Thomas, J van Tilburg, V Tisserand, M Tobin, S Tolk, L Tomassetti, D Tonelli, S Topp-Joergensen, N Torr, E Tournefier, S Tourneur, MT Tran, M Tresch, A Tsaregorodtsev, P Tsopelas, N Tuning, M Ubeda Garcia, A Ukleja, A Ustyuzhanin, U Uwer, V Vagnoni, G Valenti, A Vallier, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, G Veneziano, M Vesterinen, B Viaud, D Vieira, X Vilasis-Cardona, A Vollhardt, D Volyanskyy, D Voong, A Vorobyev, V Vorobyev, C Voß, H Voss, JA de Vries, R Waldi, C Wallace, R Wallace, S Wandernoth, J Wang, DR Ward, NK Watson, AD Webber, D Websdale, M Whitehead, J Wicht, J Wiechczynski, D Wiedner, G Wilkinson, MP Williams, M Williams, FF Wilson, J Wimberley, J Wishahi, W Wislicki, M Witek, G Wormser, SA Wotton, S Wright, S Wu, K Wyllie, Y Xie, Z Xing, Z Yang, X Yuan, O Yushchenko, M Zangoli, M Zavertyaev, F Zhang, L Zhang, WC Zhang, Y Zhang, A Zhelezov, A Zhokhov, L Zhong, A ZvyaginAbstract:
The resonant structure of the decay $\overline{B}_s^0\to J/ψπ^+π^-$ is studied using data corresponding to 3 fb$^{-1}$ of integrated luminosity from $pp$ collisions by the LHC and collected by the LHCb detector. Five interfering $π^+π^-$ states are required to describe the decay: $f_0(980),f_0(1500),f_0(1790),f_2(1270)$, and $f_2^{\prime}(1525)$. An alternative model including these states and a non-resonant $J/ψπ^+π^-$ component also provides a good description of the data. Based on the different transversity components measured for the spin-2 intermediate states, the final state is found to be compatible with being entirely $CP$-odd. The $CP$-even part is found to be $<2.3$% at 95% confidence level. The $f_0(500)$ state is not observed, allowing a limit to be set on the absolute value of the mixing angle with the $f_0(980)$ of $<7.7^{\circ}$ at 90% confidence level, consistent with a tetraquark interpretation of the $f_0(980)$ substructure.Precision measurement of the ratio of the $\Lambda^0_b$ to $\overline{B}^0$ lifetimes
(2014)
Authors:
LHCb collaboration, R Aaij, B Adeva, M Adinolfi, A Affolder, Z Ajaltouni, J Albrecht, F Alessio, M Alexander, S Ali, G Alkhazov, P Alvarez Cartelle, AA Alves, S Amato, S Amerio, Y Amhis, L Anderlini, J Anderson, R Andreassen, M Andreotti, JE Andrews, RB Appleby, O Aquines Gutierrez, F Archilli, A Artamonov, M Artuso, E Aslanides, G Auriemma, M Baalouch, S Bachmann, JJ Back, A Badalov, V Balagura, W Baldini, RJ Barlow, C Barschel, S Barsuk, W Barter, V Batozskaya, Th Bauer, A Bay, J Beddow, F Bedeschi, I Bediaga, S Belogurov, K Belous, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, J Benton, A Berezhnoy, R Bernet, M-O Bettler, M van Beuzekom, A Bien, S Bifani, T Bird, A Bizzeti, PM Bjørnstad, T Blake, F Blanc, J Blouw, S Blusk, V Bocci, A Bondar, N Bondar, W Bonivento, S Borghi, A Borgia, M Borsato, TJV Bowcock, E Bowen, C Bozzi, T Brambach, J van den Brand, J Bressieux, D Brett, M Britsch, T Britton, NH Brook, H Brown, A Bursche, G Busetto, J Buytaert, S Cadeddu, R Calabrese, O Callot, M Calvi, M Calvo Gomez, A Camboni, P Campana, D Campora Perez, F Caponio, A Carbone, G Carboni, R Cardinale, A Cardini, H Carranza-Mejia, L Carson, K Carvalho Akiba, G Casse, L Cassina, L Castillo Garcia, M Cattaneo, Ch Cauet, R Cenci, M Charles, Ph Charpentier, S-F Cheung, N Chiapolini, M Chrzaszcz, K Ciba, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, C Coca, V Coco, J Cogan, E Cogneras, P Collins, A Comerma-Montells, A Contu, A Cook, M Coombes, S Coquereau, G Corti, I Counts, B Couturier, GA Cowan, DC Craik, M Cruz Torres, S Cunliffe, R Currie, C D'Ambrosio, J Dalseno, P David, PNY David, A Davis, I De Bonis, K De Bruyn, S De Capua, M De Cian, JM De Miranda, L De Paula, W De Silva, P De Simone, D Decamp, M Deckenhoff, L Del Buono, N Déléage, D Derkach, O Deschamps, F Dettori, A Di Canto, H Dijkstra, S Donleavy, F Dordei, M Dorigo, P Dorosz, A Dosil Suárez, D Dossett, A Dovbnya, F Dupertuis, P Durante, R Dzhelyadin, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, U Eitschberger, R Ekelhof, L Eklund, I El Rifai, Ch Elsasser, S Esen, A Falabella, C Färber, C Farinelli, S Farry, D Ferguson, V Fernandez Albor, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, M Fiore, M Fiorini, C Fitzpatrick, M Fontana, F Fontanelli, R Forty, O Francisco, M Frank, C Frei, M Frosini, J Fu, E Furfaro, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, Y Gao, J Garofoli, J Garra Tico, L Garrido, C Gaspar, R Gauld, L Gavardi, E Gersabeck, M Gersabeck, T Gershon, Ph Ghez, A Gianelle, S Giani', V Gibson, L Giubega, VV Gligorov, C Göbel, D Golubkov, A Golutvin, A Gomes, H Gordon, M Grabalosa Gándara, R Graciani Diaz, LA Granado Cardoso, E Graugés, G Graziani, A Grecu, E Greening, S Gregson, P Griffith, L Grillo, O Grünberg, B Gui, E Gushchin, Yu Guz, T Gys, C Hadjivasiliou, G Haefeli, C Haen, TW Hafkenscheid, SC Haines, S Hall, B Hamilton, T Hampson, S Hansmann-Menzemer, N Harnew, ST Harnew, J Harrison, T Hartmann, J He, T Head, V Heijne, K Hennessy, P Henrard, L Henry, JA Hernando Morata, E van Herwijnen, M Heß, A Hicheur, D Hill, M Hoballah, C Hombach, W Hulsbergen, P Hunt, N Hussain, D Hutchcroft, D Hynds, M Idzik, P Ilten, R Jacobsson, A Jaeger, E Jans, P Jaton, A Jawahery, F Jing, M John, D Johnson, CR Jones, C Joram, B Jost, N Jurik, M Kaballo, S Kandybei, W Kanso, M Karacson, TM Karbach, M Kelsey, IR Kenyon, T Ketel, B Khanji, C Khurewathanakul, S Klaver, O Kochebina, I Komarov, RF Koopman, P Koppenburg, M Korolev, A Kozlinskiy, L Kravchuk, K Kreplin, M Kreps, G Krocker, P Krokovny, F Kruse, M Kucharczyk, V Kudryavtsev, K Kurek, T Kvaratskheliya, VN La Thi, D Lacarrere, G Lafferty, A Lai, D Lambert, RW Lambert, E Lanciotti, G Lanfranchi, C Langenbruch, B Langhans, T Latham, C Lazzeroni, R Le Gac, J van Leerdam, J-P Lees, R Lefèvre, A Leflat, J Lefrançois, S Leo, O Leroy, T Lesiak, B Leverington, Y Li, M Liles, R Lindner, C Linn, F Lionetto, B Liu, G Liu, S Lohn, I Longstaff, JH Lopes, N Lopez-March, P Lowdon, H Lu, D Lucchesi, H Luo, E Luppi, O Lupton, F Machefert, IV Machikhiliyan, F Maciuc, O Maev, S Malde, G Manca, G Mancinelli, M Manzali, J Maratas, U Marconi, C Marin Benito, P Marino, R Märki, J Marks, G Martellotti, A Martens, A Martín Sánchez, M Martinelli, D Martinez Santos, F Martinez Vidal, D Martins Tostes, A Massafferri, R Matev, Z Mathe, C Matteuzzi, A Mazurov, M McCann, J McCarthy, A McNab, R McNulty, B McSkelly, B Meadows, F Meier, M Meissner, M Merk, DA Milanes, M-N Minard, J Molina Rodriguez, S Monteil, D Moran, M Morandin, P Morawski, A Mordà, MJ Morello, R Mountain, F Muheim, K Müller, R Muresan, B Muryn, B Muster, P Naik, T Nakada, R Nandakumar, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, AD Nguyen, TD Nguyen, C Nguyen-Mau, M Nicol, V Niess, R Niet, N Nikitin, T Nikodem, A Novoselov, A Oblakowska-Mucha, V Obraztsov, S Oggero, S Ogilvy, O Okhrimenko, R Oldeman, G Onderwater, M Orlandea, JM Otalora Goicochea, P Owen, A Oyanguren, BK Pal, A Palano, F Palombo, M Palutan, J Panman, A Papanestis, M Pappagallo, L Pappalardo, C Parkes, CJ Parkinson, G Passaleva, GD Patel, M Patel, C Patrignani, C Pavel-Nicorescu, A Pazos Alvarez, A Pearce, A Pellegrino, M Pepe Altarelli, S Perazzini, E Perez Trigo, P Perret, M Perrin-Terrin, L Pescatore, E Pesen, G Pessina, K Petridis, A Petrolini, E Picatoste Olloqui, B Pietrzyk, T Pilař, D Pinci, A Pistone, S Playfer, M Plo Casasus, F Polci, A Poluektov, E Polycarpo, A Popov, D Popov, B Popovici, C Potterat, A Powell, J Prisciandaro, A Pritchard, C Prouve, V Pugatch, A Puig Navarro, G Punzi, W Qian, B Rachwal, JH Rademacker, B Rakotomiaramanana, M Rama, MS Rangel, I Raniuk, N Rauschmayr, G Raven, S Reichert, MM Reid, AC dos Reis, S Ricciardi, A Richards, K Rinnert, V Rives Molina, DA Roa Romero, P Robbe, DA Roberts, AB Rodrigues, E Rodrigues, P Rodriguez Perez, S Roiser, V Romanovsky, A Romero Vidal, M Rotondo, J Rouvinet, T Ruf, F Ruffini, H Ruiz, P Ruiz Valls, G Sabatino, JJ Saborido Silva, N Sagidova, P Sail, B Saitta, V Salustino Guimaraes, B Sanmartin Sedes, R Santacesaria, C Santamarina Rios, E Santovetti, M Sapunov, A Sarti, C Satriano, A Satta, M Savrie, D Savrina, M Schiller, H Schindler, M Schlupp, M Schmelling, B Schmidt, O Schneider, A Schopper, M-H Schune, R Schwemmer, B Sciascia, A Sciubba, M Seco, A Semennikov, K Senderowska, I Sepp, N Serra, J Serrano, P Seyfert, M Shapkin, I Shapoval, Y Shcheglov, T Shears, L Shekhtman, O Shevchenko, V Shevchenko, A Shires, R Silva Coutinho, G Simi, M Sirendi, N Skidmore, T Skwarnicki, NA Smith, E Smith, E Smith, J Smith, M Smith, H Snoek, MD Sokoloff, FJP Soler, F Soomro, D Souza, B Souza De Paula, B Spaan, A Sparkes, F Spinella, P Spradlin, F Stagni, S Stahl, O Steinkamp, S Stevenson, S Stoica, S Stone, B Storaci, S Stracka, M Straticiuc, U Straumann, R Stroili, VK Subbiah, L Sun, W Sutcliffe, S Swientek, V Syropoulos, M Szczekowski, P Szczypka, D Szilard, T Szumlak, S T'Jampens, M Teklishyn, G Tellarini, E Teodorescu, F Teubert, C Thomas, E Thomas, J van Tilburg, V Tisserand, M Tobin, S Tolk, L Tomassetti, D Tonelli, S Topp-Joergensen, N Torr, E Tournefier, S Tourneur, MT Tran, M Tresch, A Tsaregorodtsev, P Tsopelas, N Tuning, M Ubeda Garcia, A Ukleja, A Ustyuzhanin, U Uwer, V Vagnoni, G Valenti, A Vallier, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, G Veneziano, M Vesterinen, B Viaud, D Vieira, X Vilasis-Cardona, A Vollhardt, D Volyanskyy, D Voong, A Vorobyev, V Vorobyev, C Voß, H Voss, JA de Vries, R Waldi, C Wallace, R Wallace, S Wandernoth, J Wang, DR Ward, NK Watson, AD Webber, D Websdale, M Whitehead, J Wicht, J Wiechczynski, D Wiedner, G Wilkinson, MP Williams, M Williams, FF Wilson, J Wimberley, J Wishahi, W Wislicki, M Witek, G Wormser, SA Wotton, S Wright, S Wu, K Wyllie, Y Xie, Z Xing, Z Yang, X Yuan, O Yushchenko, M Zangoli, M Zavertyaev, F Zhang, L Zhang, WC Zhang, Y Zhang, A Zhelezov, A Zhokhov, L Zhong, A ZvyaginPrecision measurement of the ratio of the $Λ^0_b$ to $\overline{B}^0$ lifetimes
ArXiv 1402.6242 (2014)
Authors:
LHCb collaboration, R Aaij, B Adeva, M Adinolfi, A Affolder, Z Ajaltouni, J Albrecht, F Alessio, M Alexander, S Ali, G Alkhazov, P Alvarez Cartelle, AA Alves, S Amato, S Amerio, Y Amhis, L Anderlini, J Anderson, R Andreassen, M Andreotti, JE Andrews, RB Appleby, O Aquines Gutierrez, F Archilli, A Artamonov, M Artuso, E Aslanides, G Auriemma, M Baalouch, S Bachmann, JJ Back, A Badalov, V Balagura, W Baldini, RJ Barlow, C Barschel, S Barsuk, W Barter, V Batozskaya, Th Bauer, A Bay, J Beddow, F Bedeschi, I Bediaga, S Belogurov, K Belous, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, J Benton, A Berezhnoy, R Bernet, M-O Bettler, M van Beuzekom, A Bien, S Bifani, T Bird, A Bizzeti, PM Bjørnstad, T Blake, F Blanc, J Blouw, S Blusk, V Bocci, A Bondar, N Bondar, W Bonivento, S Borghi, A Borgia, M Borsato, TJV Bowcock, E Bowen, C Bozzi, T Brambach, J van den Brand, J Bressieux, D Brett, M Britsch, T Britton, NH Brook, H Brown, A Bursche, G Busetto, J Buytaert, S Cadeddu, R Calabrese, O Callot, M Calvi, M Calvo Gomez, A Camboni, P Campana, D Campora Perez, F Caponio, A Carbone, G Carboni, R Cardinale, A Cardini, H Carranza-Mejia, L Carson, K Carvalho Akiba, G Casse, L Cassina, L Castillo Garcia, M Cattaneo, Ch Cauet, R Cenci, M Charles, Ph Charpentier, S-F Cheung, N Chiapolini, M Chrzaszcz, K Ciba, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, C Coca, V Coco, J Cogan, E Cogneras, P Collins, A Comerma-Montells, A Contu, A Cook, M Coombes, S Coquereau, G Corti, I Counts, B Couturier, GA Cowan, DC Craik, M Cruz Torres, S Cunliffe, R Currie, C D'Ambrosio, J Dalseno, P David, PNY David, A Davis, I De Bonis, K De Bruyn, S De Capua, M De Cian, JM De Miranda, L De Paula, W De Silva, P De Simone, D Decamp, M Deckenhoff, L Del Buono, N Déléage, D Derkach, O Deschamps, F Dettori, A Di Canto, H Dijkstra, S Donleavy, F Dordei, M Dorigo, P Dorosz, A Dosil Suárez, D Dossett, A Dovbnya, F Dupertuis, P Durante, R Dzhelyadin, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, U Eitschberger, R Ekelhof, L Eklund, I El Rifai, Ch Elsasser, S Esen, A Falabella, C Färber, C Farinelli, S Farry, D Ferguson, V Fernandez Albor, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, M Fiore, M Fiorini, C Fitzpatrick, M Fontana, F Fontanelli, R Forty, O Francisco, M Frank, C Frei, M Frosini, J Fu, E Furfaro, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, Y Gao, J Garofoli, J Garra Tico, L Garrido, C Gaspar, R Gauld, L Gavardi, E Gersabeck, M Gersabeck, T Gershon, Ph Ghez, A Gianelle, S Giani', V Gibson, L Giubega, VV Gligorov, C Göbel, D Golubkov, A Golutvin, A Gomes, H Gordon, M Grabalosa Gándara, R Graciani Diaz, LA Granado Cardoso, E Graugés, G Graziani, A Grecu, E Greening, S Gregson, P Griffith, L Grillo, O Grünberg, B Gui, E Gushchin, Yu Guz, T Gys, C Hadjivasiliou, G Haefeli, C Haen, TW Hafkenscheid, SC Haines, S Hall, B Hamilton, T Hampson, S Hansmann-Menzemer, N Harnew, ST Harnew, J Harrison, T Hartmann, J He, T Head, V Heijne, K Hennessy, P Henrard, L Henry, JA Hernando Morata, E van Herwijnen, M Heß, A Hicheur, D Hill, M Hoballah, C Hombach, W Hulsbergen, P Hunt, N Hussain, D Hutchcroft, D Hynds, M Idzik, P Ilten, R Jacobsson, A Jaeger, E Jans, P Jaton, A Jawahery, F Jing, M John, D Johnson, CR Jones, C Joram, B Jost, N Jurik, M Kaballo, S Kandybei, W Kanso, M Karacson, TM Karbach, M Kelsey, IR Kenyon, T Ketel, B Khanji, C Khurewathanakul, S Klaver, O Kochebina, I Komarov, RF Koopman, P Koppenburg, M Korolev, A Kozlinskiy, L Kravchuk, K Kreplin, M Kreps, G Krocker, P Krokovny, F Kruse, M Kucharczyk, V Kudryavtsev, K Kurek, T Kvaratskheliya, VN La Thi, D Lacarrere, G Lafferty, A Lai, D Lambert, RW Lambert, E Lanciotti, G Lanfranchi, C Langenbruch, B Langhans, T Latham, C Lazzeroni, R Le Gac, J van Leerdam, J-P Lees, R Lefèvre, A Leflat, J Lefrançois, S Leo, O Leroy, T Lesiak, B Leverington, Y Li, M Liles, R Lindner, C Linn, F Lionetto, B Liu, G Liu, S Lohn, I Longstaff, JH Lopes, N Lopez-March, P Lowdon, H Lu, D Lucchesi, H Luo, E Luppi, O Lupton, F Machefert, IV Machikhiliyan, F Maciuc, O Maev, S Malde, G Manca, G Mancinelli, M Manzali, J Maratas, U Marconi, C Marin Benito, P Marino, R Märki, J Marks, G Martellotti, A Martens, A Martín Sánchez, M Martinelli, D Martinez Santos, F Martinez Vidal, D Martins Tostes, A Massafferri, R Matev, Z Mathe, C Matteuzzi, A Mazurov, M McCann, J McCarthy, A McNab, R McNulty, B McSkelly, B Meadows, F Meier, M Meissner, M Merk, DA Milanes, M-N Minard, J Molina Rodriguez, S Monteil, D Moran, M Morandin, P Morawski, A Mordà, MJ Morello, R Mountain, F Muheim, K Müller, R Muresan, B Muryn, B Muster, P Naik, T Nakada, R Nandakumar, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, AD Nguyen, TD Nguyen, C Nguyen-Mau, M Nicol, V Niess, R Niet, N Nikitin, T Nikodem, A Novoselov, A Oblakowska-Mucha, V Obraztsov, S Oggero, S Ogilvy, O Okhrimenko, R Oldeman, G Onderwater, M Orlandea, JM Otalora Goicochea, P Owen, A Oyanguren, BK Pal, A Palano, F Palombo, M Palutan, J Panman, A Papanestis, M Pappagallo, L Pappalardo, C Parkes, CJ Parkinson, G Passaleva, GD Patel, M Patel, C Patrignani, C Pavel-Nicorescu, A Pazos Alvarez, A Pearce, A Pellegrino, M Pepe Altarelli, S Perazzini, E Perez Trigo, P Perret, M Perrin-Terrin, L Pescatore, E Pesen, G Pessina, K Petridis, A Petrolini, E Picatoste Olloqui, B Pietrzyk, T Pilař, D Pinci, A Pistone, S Playfer, M Plo Casasus, F Polci, A Poluektov, E Polycarpo, A Popov, D Popov, B Popovici, C Potterat, A Powell, J Prisciandaro, A Pritchard, C Prouve, V Pugatch, A Puig Navarro, G Punzi, W Qian, B Rachwal, JH Rademacker, B Rakotomiaramanana, M Rama, MS Rangel, I Raniuk, N Rauschmayr, G Raven, S Reichert, MM Reid, AC dos Reis, S Ricciardi, A Richards, K Rinnert, V Rives Molina, DA Roa Romero, P Robbe, DA Roberts, AB Rodrigues, E Rodrigues, P Rodriguez Perez, S Roiser, V Romanovsky, A Romero Vidal, M Rotondo, J Rouvinet, T Ruf, F Ruffini, H Ruiz, P Ruiz Valls, G Sabatino, JJ Saborido Silva, N Sagidova, P Sail, B Saitta, V Salustino Guimaraes, B Sanmartin Sedes, R Santacesaria, C Santamarina Rios, E Santovetti, M Sapunov, A Sarti, C Satriano, A Satta, M Savrie, D Savrina, M Schiller, H Schindler, M Schlupp, M Schmelling, B Schmidt, O Schneider, A Schopper, M-H Schune, R Schwemmer, B Sciascia, A Sciubba, M Seco, A Semennikov, K Senderowska, I Sepp, N Serra, J Serrano, P Seyfert, M Shapkin, I Shapoval, Y Shcheglov, T Shears, L Shekhtman, O Shevchenko, V Shevchenko, A Shires, R Silva Coutinho, G Simi, M Sirendi, N Skidmore, T Skwarnicki, NA Smith, E Smith, E Smith, J Smith, M Smith, H Snoek, MD Sokoloff, FJP Soler, F Soomro, D Souza, B Souza De Paula, B Spaan, A Sparkes, F Spinella, P Spradlin, F Stagni, S Stahl, O Steinkamp, S Stevenson, S Stoica, S Stone, B Storaci, S Stracka, M Straticiuc, U Straumann, R Stroili, VK Subbiah, L Sun, W Sutcliffe, S Swientek, V Syropoulos, M Szczekowski, P Szczypka, D Szilard, T Szumlak, S T'Jampens, M Teklishyn, G Tellarini, E Teodorescu, F Teubert, C Thomas, E Thomas, J van Tilburg, V Tisserand, M Tobin, S Tolk, L Tomassetti, D Tonelli, S Topp-Joergensen, N Torr, E Tournefier, S Tourneur, MT Tran, M Tresch, A Tsaregorodtsev, P Tsopelas, N Tuning, M Ubeda Garcia, A Ukleja, A Ustyuzhanin, U Uwer, V Vagnoni, G Valenti, A Vallier, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, G Veneziano, M Vesterinen, B Viaud, D Vieira, X Vilasis-Cardona, A Vollhardt, D Volyanskyy, D Voong, A Vorobyev, V Vorobyev, C Voß, H Voss, JA de Vries, R Waldi, C Wallace, R Wallace, S Wandernoth, J Wang, DR Ward, NK Watson, AD Webber, D Websdale, M Whitehead, J Wicht, J Wiechczynski, D Wiedner, G Wilkinson, MP Williams, M Williams, FF Wilson, J Wimberley, J Wishahi, W Wislicki, M Witek, G Wormser, SA Wotton, S Wright, S Wu, K Wyllie, Y Xie, Z Xing, Z Yang, X Yuan, O Yushchenko, M Zangoli, M Zavertyaev, F Zhang, L Zhang, WC Zhang, Y Zhang, A Zhelezov, A Zhokhov, L Zhong, A ZvyaginAbstract:
The LHCb measurement of the lifetime ratio of the $Λ^0_b$ to the $\overline{B}^0$ meson is updated using data corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected using 7 and 8 TeV centre-of-mass energy $pp$ collisions at the LHC. The decay modes used are $\overline{B}^0\to J/ψp K^-$ and $\overline{B}^0\to J/ψπ^+ K^-$, where the $π^+K^-$ mass is consistent with that of the $\overline{K}^{*0}(892)$ meson. The lifetime ratio is determined with unprecedented precision to be $0.974\pm0.006\pm0.004$, where the first uncertainty is statistical and the second systematic. This result is in agreement with original theoretical predictions based on the heavy quark expansion. Using the current world average of the $\overline{B}^0$ lifetime, the $Λ^0_b$ lifetime is found to be $1.479 \pm 0.009 \pm 0.010$ ps.Measurement of charged particle multiplicities and densities in $pp$ collisions at $\sqrt{s}=7\;$TeV in the forward region
(2014)
Authors:
R Aaij, B Adeva, M Adinolfi, A Affolder, Z Ajaltouni, J Albrecht, F Alessio, M Alexander, S Ali, G Alkhazov, P Alvarez Cartelle, AA Alves, S Amato, S Amerio, Y Amhis, L Anderlini, J Anderson, R Andreassen, M Andreotti, JE Andrews, RB Appleby, O Aquines Gutierrez, F Archilli, A Artamonov, M Artuso, E Aslanides, G Auriemma, M Baalouch, S Bachmann, JJ Back, A Badalov, V Balagura, W Baldini, RJ Barlow, C Barschel, S Barsuk, W Barter, V Batozskaya, Th Bauer, A Bay, J Beddow, F Bedeschi, I Bediaga, S Belogurov, K Belous, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, J Benton, A Berezhnoy, R Bernet, M-O Bettler, M van Beuzekom, A Bien, S Bifani, T Bird, A Bizzeti, PM Bjørnstad, T Blake, F Blanc, J Blouw, S Blusk, V Bocci, A Bondar, N Bondar, W Bonivento, S Borghi, A Borgia, M Borsato, TJV Bowcock, E Bowen, C Bozzi, T Brambach, J van den Brand, J Bressieux, D Brett, M Britsch, T Britton, NH Brook, H Brown, A Bursche, G Busetto, J Buytaert, S Cadeddu, R Calabrese, O Callot, M Calvi, M Calvo Gomez, A Camboni, P Campana, D Campora Perez, A Carbone, G Carboni, R Cardinale, A Cardini, H Carranza-Mejia, L Carson, K Carvalho Akiba, G Casse, L Cassina, L Castillo Garcia, M Cattaneo, Ch Cauet, R Cenci, M Charles, Ph Charpentier, S-F Cheung, N Chiapolini, M Chrzaszcz, K Ciba, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, C Coca, V Coco, J Cogan, E Cogneras, P Collins, A Comerma-Montells, A Contu, A Cook, M Coombes, S Coquereau, G Corti, I Counts, B Couturier, GA Cowan, DC Craik, M Cruz Torres, S Cunliffe, R Currie, C D'Ambrosio, J Dalseno, P David, PNY David, A Davis, I De Bonis, K De Bruyn, S De Capua, M De Cian, JM De Miranda, L De Paula, W De Silva, P De Simone, D Decamp, M Deckenhoff, L Del Buono, N Déléage, D Derkach, O Deschamps, F Dettori, A Di Canto, H Dijkstra, S Donleavy, F Dordei, M Dorigo, P Dorosz, A Dosil Suárez, D Dossett, A Dovbnya, F Dupertuis, P Durante, R Dzhelyadin, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, U Eitschberger, R Ekelhof, L Eklund, I El Rifai, Ch Elsasser, S Esen, A Falabella, C Färber, C Farinelli, S Farry, D Ferguson, V Fernandez Albor, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, M Fiore, M Fiorini, C Fitzpatrick, M Fontana, F Fontanelli, R Forty, O Francisco, M Frank, C Frei, M Frosini, J Fu, E Furfaro, A Gallas Torreira, D Galli, M Gandelman, P Gandini, Y Gao, J Garofoli, J Garra Tico, L Garrido, C Gaspar, R Gauld, L Gavardi, E Gersabeck, M Gersabeck, T Gershon, Ph Ghez, A Gianelle, S Giani', V Gibson, L Giubega, VV Gligorov, C Göbel, D Golubkov, A Golutvin, A Gomes, H Gordon, M Grabalosa Gándara, R Graciani Diaz, LA Granado Cardoso, E Graugés, G Graziani, A Grecu, E Greening, S Gregson, P Griffith, L Grillo, O Grünberg, B Gui, E Gushchin, Yu Guz, T Gys, C Hadjivasiliou, G Haefeli, C Haen, TW Hafkenscheid, SC Haines, S Hall, B Hamilton, T Hampson, S Hansmann-Menzemer, N Harnew, ST Harnew, J Harrison, T Hartmann, J He, T Head, V Heijne, K Hennessy, P Henrard, L Henry, JA Hernando Morata, E van Herwijnen, M Heß, A Hicheur, D Hill, M Hoballah, C Hombach, W Hulsbergen, P Hunt, N Hussain, D Hutchcroft, D Hynds, V Iakovenko, M Idzik, P Ilten, R Jacobsson, A Jaeger, E Jans, P Jaton, A Jawahery, F Jing, M John, D Johnson, CR Jones, C Joram, B Jost, N Jurik, M Kaballo, S Kandybei, W Kanso, M Karacson, TM Karbach, M Kelsey, IR Kenyon, T Ketel, B Khanji, C Khurewathanakul, S Klaver, O Kochebina, I Komarov, RF Koopman, P Koppenburg, M Korolev, A Kozlinskiy, L Kravchuk, K Kreplin, M Kreps, G Krocker, P Krokovny, F Kruse, M Kucharczyk, V Kudryavtsev, K Kurek, T Kvaratskheliya, VN La Thi, D Lacarrere, G Lafferty, A Lai, D Lambert, RW Lambert, E Lanciotti, G Lanfranchi, C Langenbruch, T Latham, C Lazzeroni, R Le Gac, J van Leerdam, J-P Lees, R Lefèvre, A Leflat, J Lefrançois, S Leo, O Leroy, T Lesiak, B Leverington, Y Li, M Liles, R Lindner, C Linn, F Lionetto, B Liu, G Liu, S Lohn, I Longstaff, JH Lopes, N Lopez-March, P Lowdon, H Lu, D Lucchesi, J Luisier, H Luo, E Luppi, O Lupton, F Machefert, IV Machikhiliyan, F Maciuc, O Maev, S Malde, G Manca, G Mancinelli, M Manzali, J Maratas, U Marconi, P Marino, R Märki, J Marks, G Martellotti, A Martens, A Martín Sánchez, M Martinelli, D Martinez Santos, F Martinez Vidal, D Martins Tostes, A Massafferri, R Matev, Z Mathe, C Matteuzzi, A Mazurov, M McCann, J McCarthy, A McNab, R McNulty, B McSkelly, B Meadows, F Meier, M Meissner, M Merk, DA Milanes, M-N Minard, J Molina Rodriguez, S Monteil, D Moran, M Morandin, P Morawski, A Mordà, MJ Morello, R Mountain, F Muheim, K Müller, R Muresan, B Muryn, B Muster, P Naik, T Nakada, R Nandakumar, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, AD Nguyen, TD Nguyen, C Nguyen-Mau, M Nicol, V Niess, R Niet, N Nikitin, T Nikodem, A Novoselov, A Oblakowska-Mucha, V Obraztsov, S Oggero, S Ogilvy, O Okhrimenko, R Oldeman, G Onderwater, M Orlandea, JM Otalora Goicochea, P Owen, A Oyanguren, BK Pal, A Palano, F Palombo, M Palutan, J Panman, A Papanestis, M Pappagallo, L Pappalardo, C Parkes, CJ Parkinson, G Passaleva, GD Patel, M Patel, C Patrignani, C Pavel-Nicorescu, A Pazos Alvarez, A Pearce, A Pellegrino, G Penso, M Pepe Altarelli, S Perazzini, E Perez Trigo, P Perret, M Perrin-Terrin, L Pescatore, E Pesen, G Pessina, K Petridis, A Petrolini, E Picatoste Olloqui, B Pietrzyk, T Pilař, D Pinci, A Pistone, S Playfer, M Plo Casasus, F Polci, G Polok, A Poluektov, E Polycarpo, A Popov, D Popov, B Popovici, C Potterat, A Powell, J Prisciandaro, A Pritchard, C Prouve, V Pugatch, A Puig Navarro, G Punzi, W Qian, B Rachwal, JH Rademacker, B Rakotomiaramanana, M Rama, MS Rangel, I Raniuk, N Rauschmayr, G Raven, S Redford, S Reichert, MM Reid, AC dos Reis, S Ricciardi, A Richards, K Rinnert, V Rives Molina, DA Roa Romero, P Robbe, DA Roberts, AB Rodrigues, E Rodrigues, P Rodriguez Perez, S Roiser, V Romanovsky, A Romero Vidal, M Rotondo, J Rouvinet, T Ruf, F Ruffini, H Ruiz, P Ruiz Valls, G Sabatino, JJ Saborido Silva, N Sagidova, P Sail, B Saitta, V Salustino Guimaraes, B Sanmartin Sedes, R Santacesaria, C Santamarina Rios, E Santovetti, M Sapunov, A Sarti, C Satriano, A Satta, M Savrie, D Savrina, M Schiller, H Schindler, M Schlupp, M Schmelling, B Schmidt, O Schneider, A Schopper, M-H Schune, R Schwemmer, B Sciascia, A Sciubba, M Seco, A Semennikov, K Senderowska, I Sepp, N Serra, J Serrano, P Seyfert, M Shapkin, I Shapoval, Y Shcheglov, T Shears, L Shekhtman, O Shevchenko, V Shevchenko, A Shires, R Silva Coutinho, G Simi, M Sirendi, N Skidmore, T Skwarnicki, NA Smith, E Smith, E Smith, J Smith, M Smith, H Snoek, MD Sokoloff, FJP Soler, F Soomro, D Souza, B Souza De Paula, B Spaan, A Sparkes, F Spinella, P Spradlin, F Stagni, S Stahl, O Steinkamp, S Stevenson, S Stoica, S Stone, B Storaci, S Stracka, M Straticiuc, U Straumann, R Stroili, VK Subbiah, L Sun, W Sutcliffe, S Swientek, V Syropoulos, M Szczekowski, P Szczypka, D Szilard, T Szumlak, S T'Jampens, M Teklishyn, G Tellarini, E Teodorescu, F Teubert, C Thomas, E Thomas, J van Tilburg, V Tisserand, M Tobin, S Tolk, L Tomassetti, D Tonelli, S Topp-Joergensen, N Torr, E Tournefier, S Tourneur, MT Tran, M Tresch, A Tsaregorodtsev, P Tsopelas, N Tuning, M Ubeda Garcia, A Ukleja, A Ustyuzhanin, U Uwer, V Vagnoni, G Valenti, A Vallier, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, G Veneziano, M Vesterinen, B Viaud, D Vieira, X Vilasis-Cardona, A Vollhardt, D Volyanskyy, D Voong, A Vorobyev, V Vorobyev, C Voß, H Voss, JA de Vries, R Waldi, C Wallace, R Wallace, S Wandernoth, J Wang, DR Ward, NK Watson, AD Webber, D Websdale, M Whitehead, J Wicht, J Wiechczynski, D Wiedner, L Wiggers, G Wilkinson, MP Williams, M Williams, FF Wilson, J Wimberley, J Wishahi, W Wislicki, M Witek, G Wormser, SA Wotton, S Wright, S Wu, K Wyllie, Y Xie, Z Xing, Z Yang, X Yuan, O Yushchenko, M Zangoli, M Zavertyaev, F Zhang, L Zhang, WC Zhang, Y Zhang, A Zhelezov, A Zhokhov, L Zhong, A ZvyaginA study of CP violation in $B^\pm \to D K^\pm$ and $B^\pm \to D \pi^\pm$ decays with $D \to K^0_{\rm S} K^\pm \pi^\mp$ final states
(2014)