Measurement of the effective B
→ J/ψK
lifetime
Nuclear Physics B 837:1-2 (2010) 275-292
Authors:
I Bediaga, JM De Miranda, F Ferreira Rodrigues, A Massafferri, I Nasteva, AC dos Reis, S Amato, K Carvalho Akiba, L De Paula, O Francisco, M Gandelman, A Gomes, JH Lopes, D Martins Tostes, JM Otalora Goicochea, E Polycarpo, MS Rangel, V Salustino Guimaraes, B Souza De Paula, D Vieira, P Chen, Y Gao, F Jing, Y Li, B Liu, H Lu, S Wu, Z Yang, X Yuan, F Zhang, Y Zhang, L Zhong, I De Bonis, D Decamp, N Déléage, P Ghez, P Hopchev, J-P Lees, IV Machikhiliyan, M-N Minard, B Pietrzyk, W Qian, S T'Jampens, V Tisserand, E Tournefier, Z Ajaltouni, E Cogneras, O Deschamps, I El Rifai, M Grabalosa Gándara, P Henrard, M Hoballah, R Lefèvre, L Li Gioi, S Monteil, V Niess, P Perret, DA Roa Romero, C Adrover, E Aslanides, J Cogan, R Le Gac, O Leroy, G Mancinelli, E Maurice, M Perrin-Terrin, M Sapunov, J Serrano, A Tsaregorodtsev, Y Amhis, S Barsuk, O Callot, O Kochebina, J Lefrançois, F Machefert, A Martín Sánchez, M Nicol, P Robbe, M-H Schune, M Teklishyn, B Viaud, E Ben-Haim, S Coquereau, P David, L Del Buono, A Martens, DA Milanes, F Polci, J Albrecht, T Brambach, C Cauet, M Deckenhoff, U Eitschberger, R Ekelhof, M Kaballo, F Kruse, F Meier, R Niet, M Schlupp, B Spaan, S Swientek, J Wishahi, O Aquines Gutierrez, M Britsch, M Fontana, D Popov, M Schmelling, D Volyanskyy, H Voss, M Zavertyaev, S Bachmann, A Bien, J Blouw, A Di Canto, F Dordei, C Färber, E Gersabeck, S Hansmann-Menzemer, A Jaeger, K Kreplin, G Krocker, B Leverington, C Linn, J Marks, M Meissner, T Nikodem, P Seyfert, S Stahl, J van Tilburg, U Uwer, S Wandernoth, D Wiedner, A Zhelezov, S Farry, P Ilten, R McNulty, R Wallace, WC Zhang, A Palano, A Carbone, D Derkach, A Falabella, D Galli, U Marconi, S Perazzini, V Vagnoni, G Valenti, M Zangoli, W Bonivento, S Cadeddu, A Cardini, A Contu, A Lai, G Manca, R Oldeman, B Saitta, W Baldini, C Bozzi, M Fiore, A Mazurov, M Savrie, I Shapoval, S Vecchi, L Anderlini, A Bizzeti, M Frosini, G Graziani, G Passaleva, M Veltri, F Archilli, G Bencivenni, P Campana, P De Simone, G Lanfranchi, M Palutan, A Sarti, B Sciascia, F Soomro, R Cardinale, F Fontanelli, C Patrignani, A Petrolini, M Sannino, M Calvi, S Furcas, B Khanji, M Kucharczyk, C Matteuzzi, DL Perego, G Pessina, S Amerio, G Busetto, D Lucchesi, F Bedeschi, S Leo, MJ Morello, G Punzi, F Ruffini, G Carboni, F Di Ruscio, E Furfaro, E Santovetti, A Satta, AA Alves Jr, G Auriemma, V Bocci, G Martellotti, G Penso, D Pinci, G Sabatino, R Santacesaria, C Satriano, A Sciubba, M Chrzaszcz, A Dziurda, T Lesiak, P Morawski, G Polok, J Wiechczynski, M Witek, M Idzik, B Muryn, A Oblakowska-Mucha, K Senderowska, T Szumlak, M Szczekowski, A Ukleja, I Burducea, C Coca, M Dogaru, A Grecu, F Maciuc, R Muresan, M Orlandea, C Pavel-Nicorescu, B Popovici, S Stoica, M Straticiuc, E Teodorescu, G Alkhazov, N Bondar, A Dzyuba, O Maev, N Sagidova, Y Shcheglov, A Vorobyev, V Balagura, S Belogurov, I Belyaev, V Egorychev, D Golubkov, A Golutvin, T Kvaratskheliya, D Savrina, A Semennikov, P Shatalov, V Shevchenko, A Zhokhov, A Berezhnoy, M Korolev, A Leflat, N Nikitin, S Filippov, E Gushchin, L Kravchuk, A Bondar, S Eidelman, P Krokovny, V Kudryavtsev, A Poluektov, L Shekhtman, V Vorobyev, A Artamonov, K Belous, R Dzhelyadin, Y Guz, A Novoselov, V Obraztsov, A Popov, V Romanovsky, M Shapkin, O Yushchenko, C Abellan Beteta, M Calvo Gomez, A Camboni, A Comerma-Montells, L Garrido, R Graciani Diaz, E Graugés, E Lopez Asamar, A Oyanguren, A Pérez-Calero Yzquierdo, E Picatoste Olloqui, C Potterat, V Rives Molina, H Ruiz, P Ruiz Valls, R Vazquez Gomez, X Vilasis-Cardona, B Adeva, P Alvarez Cartelle, A Dosil Suárez, V Fernandez Albor, A Gallas Torreira, JA Hernando Morata, A Pazos Alvarez, E Perez Trigo, M Plo Casasus, P Rodriguez Perez, A Romero Vidal, JJ Saborido Silva, B Sanmartin Sedes, C Santamarina Rios, M Seco, P Vazquez Regueiro, F Alessio, C Barschel, T Blake, J Buytaert, D Campora Perez, L Castillo Garcia, M Cattaneo, P Charpentier, K Ciba, X Cid Vidal, M Clemencic, J Closier, P Collins, G Corti, B Couturier, C D'Ambrosio, H Dijkstra, S Easo, L Eklund, M Ferro-Luzzi, C Fitzpatrick, R Forty, M Frank, C Frei, C Gaspar, T Gershon, VV Gligorov, LA Granado Cardoso, T Gys, C Haen, J He, E van Herwijnen, R Jacobsson, C Joram, B Jost, M Karacson, TM Karbach, U Kerzel, D Lacarrere, E Lanciotti, C Langenbruch, R Lindner, G Liu, S Lohn, R Matev, Z Mathe, N Neufeld, J Panman, M Pepe Altarelli, N Rauschmayr, S Roiser, T Ruf, H Schindler, B Schmidt, A Schopper, R Schwemmer, T Shears, F Stagni, VK Subbiah, P Szczypka, F Teubert, E Thomas, D Tonelli, M Ubeda Garcia, M Vesterinen, J Wicht, K Wyllie, Y Xie, A Zvyagin, A Bay, F Blanc, J Bressieux, F Dupertuis, V Fave, G Haefeli, P Jaton, A Keune, I Komarov, VN La Thi, N Lopez-March, J Luisier, R Märki, B Muster, T Nakada, AD Nguyen, TD Nguyen, C Nguyen-Mau, J Prisciandaro, A Puig Navarro, B Rakotomiaramanana, J Rouvinet, O Schneider, M Tobin, S Tourneur, MT Tran, G Veneziano, J Anderson, R Bernet, E Bowen, A Bursche, N Chiapolini, M De Cian, C Elsasser, K Müller, C Salzmann, N Serra, O Steinkamp, B Storaci, U Straumann, M Tresch, A Vollhardt, R Aaij, S Ali, T Bauer, M van Beuzekom, V Coco, PNY David, K De Bruyn, D van Eijk, C Farinelli, V Heijne, W Hulsbergen, E Jans, P Koppenburg, A Kozlinskiy, J van Leerdam, M Martinelli, M Merk, I Mous, S Oggero, A Pellegrino, P Tsopelas, N Tuning, L Wiggers, J van den Brand, F Dettori, T Ketel, RF Koopman, RW Lambert, D Martinez Santos, G Raven, M Schiller, V Syropoulos, S Tolk, A Dovbnya, S Kandybei, I Raniuk, O Shevchenko, V Iakovenko, O Okhrimenko, V Pugatch, S Bifani, D Elsby, P Griffith, IR Kenyon, C Lazzeroni, J McCarthy, NK Watson, M Adinolfi, J Benton, NH Brook, A Cook, M Coombes, T Hampson, ST Harnew, P Naik, JH Rademacker, D Souza, JJ Velthuis, D Voong, W Barter, M-O Bettler, HV Cliff, J Garra Tico, V Gibson, S Gregson, SC Haines, CR Jones, DR Ward, SA Wotton, S Wright, JJ Back, DC Craik, D Dossett, M Kreps, T Latham, T Pilař, MM Reid, R Silva Coutinho, M Whitehead, MP Williams, R Nandakumar, A Papanestis, GN Patrick, S Ricciardi, E Smith, FF Wilson, S Benson, H Carranza-Mejia, PEL Clarke, GA Cowan, R Currie, S Eisenhardt, G Fardell, D Ferguson, D Lambert, H Luo, F Muheim, M Needham, S Playfer, A Sparkes, R Young, M Alexander, J Beddow, D Hynds, I Longstaff, S Ogilvy, M Pappagallo, P Sail, FJP Soler, P Spradlin, A Affolder, TJV Bowcock, H Brown, G Casse, S Donleavy, K Hennessy, E Hicks, T Huse, D Hutchcroft, M Liles, GD Patel, K Rinnert, NA Smith, L Carson, G Ciezarek, S Cunliffe, U Egede, S Hall, P Owen, CJ Parkinson, M Patel, K Petridis, A Richards, P Schaack, I Sepp, A Shires, D Websdale, RB Appleby, RJ Barlow, T Bird, PM Bjørnstad, S Borghi, D Brett, S De Capua, P Garosi, M Gersabeck, J Harrison, C Hombach, G Lafferty, A McNab, D Moran, C Parkes, E Rodrigues, M Smith, D Urner, AD Webber, M Charles, R Gauld, H Gordon, E Greening, N Harnew, D Hill, P Hunt, N Hussain, M John, D Johnson, S Malde, L Martin, B Meadows, A Nomerotski, A Powell, S Redford, C Thomas, S Topp-Joergensen, N Torr, G Wilkinson, F Xing, M Williams, R Andreassen, A Davis, W De Silva, MD Sokoloff, L Sun, M Artuso, S Blusk, A Borgia, T Britton, P Gandini, J Garofoli, B Gui, C Hadjivasiliou, R Mountain, BK Pal, A Phan, T Skwarnicki, S Stone, J Wang, Z Xing, L Zhang, C Baesso, C Göbel, J Molina Rodriguez, O Grünberg, T Hartmann, C Voß, R Waldi
Abstract:
This paper reports the first measurement of the effective B
→J/ψK
lifetime and an updated measurement of its time-integrated branching fraction. Both measurements are performed with a data sample, corresponding to an integrated luminosity of 1.0 fb of pp collisions, recorded by the LHCb experiment in 2011 at a centre-of-mass energy of 7 TeV. The results are: τ
= 1.75±0.12 (stat)±0.07 (syst) ps and B(B
→J/ψK
) = (1.97 ± 0.23) × 10. For the latter measurement, the uncertainty includes both statistical and systematic sources. © 2013 CERN. Published by Elsevier B.V.
