Particle identification at FCC-ee
European Physical Journal Plus 136:8 (2021)
Abstract:
Equipping an experiment at FCC-ee with particle identification (PID) capabilities, in particular the ability to distinguish between hadron species, would bring great benefits to the physics programme. Good PID is essential for precise studies in quark flavour physics and is also a great asset for many measurements in tau, top, and Higgs physics. The requirements placed by flavour physics and these other applications are surveyed, with an emphasis on the momentum range over which PID is necessary. Possible solutions are discussed, including classical RICH counters, time-of-flight systems, and dE/dx and cluster counting. Attention is paid to the impact on the global detector design that including PID capabilities would imply.Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions
Physical Review D American Physical Society (APS) 104:3 (2021) 032005
Authors:
R Aaij, C Abellán Beteta, T Ackernley, B Adeva, M Adinolfi, H Afsharnia, CA Aidala, S Aiola, Z Ajaltouni, S Akar, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, G Alkhazov, P Alvarez Cartelle, S Amato, Y Amhis, L An, L Anderlini, A Andreianov, M Andreotti, F Archilli, A Artamonov, M Artuso, K Arzymatov, E Aslanides, M Atzeni, B Audurier, S Bachmann, M Bachmayer, JJ Back, S Baker, P Baladron Rodriguez, V Balagura, W Baldini, J Baptista Leite, RJ Barlow, S Barsuk, W Barter, M Bartolini, F Baryshnikov, JM Basels, G Bassi, B Batsukh, A Battig, A Bay, M Becker, F Bedeschi, I Bediaga, A Beiter, V Belavin, S Belin, V Bellee, K Belous, I Belov, I Belyaev, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, D Berninghoff, HC Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, Ia Bezshyiko, S Bhasin, J Bhom, L Bian, MS Bieker, S Bifani, P Billoir, M Birch, FCR Bishop, A Bitadze, A Bizzeti, M Bjørn, MP Blago, T Blake, F Blanc, S Blusk, D Bobulska, JA Boelhauve, O Boente Garcia, T Boettcher, A Boldyrev, A Bondar, N Bondar, S Borghi, M Borisyak, M Borsato, JT Borsuk, SA Bouchiba, TJV Bowcock, A Boyer, C Bozzi, MJ Bradley, S Braun, A Brea Rodriguez, M Brodski, J Brodzicka, A Brossa Gonzalo, D Brundu, A Buonaura, C Burr, A Bursche, A Butkevich, JS Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, L Calero Diaz, S Cali, R Calladine, M Calvi, M Calvo Gomez, P Camargo Magalhaes, A Camboni, P Campana, AF Campoverde Quezada, S Capelli, L Capriotti, A Carbone, G Carboni, R Cardinale, A Cardini, I Carli, P Carniti, L Carus, K Carvalho Akiba, A Casais Vidal, G Casse, M Cattaneo, G Cavallero, S Celani, J Cerasoli, AJ Chadwick, MG Chapman, M Charles, Ph Charpentier, G Chatzikonstantinidis, CA Chavez Barajas, M Chefdeville, C Chen, S Chen, A Chernov, V Chobanova, S Cholak, M Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, MF Cicala, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, JL Cobbledick, V Coco, JAB Coelho, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, L Congedo, A Contu, N Cooke, G Coombs, G Corti, CM Costa Sobral, B Couturier, DC Craik, J Crkovská, M Cruz Torres, R Currie, CL Da Silva, E Dall’Occo, J Dalseno, C D’Ambrosio, A Danilina, P d’Argent, A Davis, O De Aguiar Francisco, K De Bruyn, S De Capua, M De Cian, JM De Miranda, L De Paula, M De Serio, D De Simone, P De Simone, JA de Vries, CT Dean, D Decamp, L Del Buono, B Delaney, H-P Dembinski, A Dendek, V Denysenko, D Derkach, O Deschamps, F Desse, F Dettori, B Dey, P Di Nezza, S Didenko, L Dieste Maronas, H Dijkstra, V Dobishuk, AM Donohoe, F Dordei, AC dos Reis, L Douglas, A Dovbnya, AG Downes, K Dreimanis, MW Dudek, L Dufour, V Duk, P Durante, JM Durham, D Dutta, M Dziewiecki, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, S Ek-In, L Eklund, S Ely, A Ene, E Epple, S Escher, J Eschle, S Esen, T Evans, A Falabella, J Fan, Y Fan, B Fang, S Farry, D Fazzini, P Fedin, M Féo, P Fernandez Declara, A Fernandez Prieto, JM Fernandez-tenllado Arribas, F Ferrari, L Ferreira Lopes, F Ferreira Rodrigues, S Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, RA Fini, M Fiorini, M Firlej, KM Fischer, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, R Forty, V Franco Lima, M Franco Sevilla, M Frank, E Franzoso, G Frau, C Frei, DA Friday, J Fu, Q Fuehring, W Funk, E Gabriel, T Gaintseva, A Gallas Torreira, D Galli, S Gambetta, Y Gan, M Gandelman, P Gandini, Y Gao, M Garau, LM Garcia Martin, P Garcia Moreno, J García Pardiñas, B Garcia Plana, FA Garcia Rosales, L Garrido, C Gaspar, RE Geertsema, D Gerick, LL Gerken, E Gersabeck, M Gersabeck, T Gershon, D Gerstel, Ph Ghez, V Gibson, HK Giemza, M Giovannetti, A Gioventù, P Gironella Gironell, L Giubega, C Giugliano, K Gizdov, EL Gkougkousis, VV Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A Gomes, S Gomez Fernandez, F Goncalves Abrantes, M Goncerz, G Gong, P Gorbounov, IV Gorelov, C Gotti, E Govorkova, JP Grabowski, R Graciani Diaz, T Grammatico, LA Granado Cardoso, E Graugés, E Graverini, G Graziani, A Grecu, LM Greeven, P Griffith, L Grillo, S Gromov, BR Gruberg Cazon, C Gu, M Guarise, PA Günther, E Gushchin, A Guth, Y Guz, T Gys, T Hadavizadeh, G Haefeli, C Haen, J Haimberger, T Halewood-leagas, PM Hamilton, Q Han, X Han, TH Hancock, S Hansmann-Menzemer, N Harnew, T Harrison, C Hasse, M Hatch, J He, M Hecker, K Heijhoff, K Heinicke, AM Hennequin, K Hennessy, L Henry, J Heuel, A Hicheur, D Hill, M Hilton, SE Hollitt, J Hu, J Hu, W Hu, W Huang, X Huang, W Hulsbergen, RJ Hunter, M Hushchyn, D Hutchcroft, D Hynds, P Ibis, M Idzik, D Ilin, P Ilten, A Inglessi, A Ishteev, K Ivshin, R Jacobsson, S Jakobsen, E Jans, BK Jashal, A Jawahery, V Jevtic, M Jezabek, F Jiang, M John, D Johnson, CR Jones, TP Jones, B Jost, N Jurik, S Kandybei, Y Kang, M Karacson, M Karpov, N Kazeev, F Keizer, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, KE Kim, T Kirn, VS Kirsebom, O Kitouni, S Klaver, K Klimaszewski, S Koliiev, A Kondybayeva, A Konoplyannikov, P Kopciewicz, R Kopecna, P Koppenburg, M Korolev, I Kostiuk, O Kot, S Kotriakhova, P Kravchenko, L Kravchuk, RD Krawczyk, M Kreps, F Kress, S Kretzschmar, P Krokovny, W Krupa, W Krzemien, W Kucewicz, M Kucharczyk, V Kudryavtsev, HS Kuindersma, GJ Kunde, T Kvaratskheliya, D Lacarrere, G Lafferty, A Lai, A Lampis, D Lancierini, JJ Lane, R Lane, G Lanfranchi, C Langenbruch, J Langer, O Lantwin, T Latham, F Lazzari, R Le Gac, SH Lee, R Lefèvre, A Leflat, S Legotin, O Leroy, T Lesiak, B Leverington, H Li, L Li, P Li, Y Li, Y Li, Z Li, X Liang, T Lin, R Lindner, V Lisovskyi, R Litvinov, G Liu, H Liu, S Liu, X Liu, A Loi, J Lomba Castro, I Longstaff, JH Lopes, GH Lovell, Y Lu, D Lucchesi, S Luchuk, M Lucio Martinez, V Lukashenko, Y Luo, A Lupato, E Luppi, O Lupton, A Lusiani, X Lyu, L Ma, R Ma, S Maccolini, F Machefert, F Maciuc, V Macko, P Mackowiak, S Maddrell-Mander, O Madejczyk, LR Madhan Mohan, O Maev, A Maevskiy, D Maisuzenko, MW Majewski, JJ Malczewski, S Malde, B Malecki, A Malinin, T Maltsev, H Malygina, G Manca, G Mancinelli, R Manera Escalero, D Manuzzi, D Marangotto, J Maratas, JF Marchand, U Marconi, S Mariani, C Marin Benito, M Marinangeli, P Marino, J Marks, PJ Marshall, G Martellotti, L Martinazzoli, M Martinelli, D Martinez Santos, F Martinez Vidal, A Massafferri, M Materok, R Matev, A Mathad, Z Mathe, V Matiunin, C Matteuzzi, KR Mattioli, A Mauri, E Maurice, J Mauricio, M Mazurek, M McCann, L Mcconnell, TH Mcgrath, A McNab, R McNulty, JV Mead, B Meadows, C Meaux, G Meier, N Meinert, D Melnychuk, S Meloni, M Merk, A Merli, L Meyer Garcia, M Mikhasenko, DA Milanes, E Millard, M Milovanovic, M-N Minard, L Minzoni, SE Mitchell, B Mitreska, DS Mitzel, A Mödden, RA Mohammed, RD Moise, T Mombächer, IA Monroy, S Monteil, M Morandin, G Morello, MJ Morello, J Moron, AB Morris, AG Morris, R Mountain, H Mu, F Muheim, M Mukherjee, M Mulder, D Müller, K Müller, CH Murphy, D Murray, P Muzzetto, P Naik, T Nakada, R Nandakumar, T Nanut, I Nasteva, M Needham, I Neri, N Neri, S Neubert, N Neufeld, R Newcombe, TD Nguyen, C Nguyen-Mau, EM Niel, S Nieswand, N Nikitin, NS Nolte, C Nunez, A Oblakowska-Mucha, V Obraztsov, DP O’Hanlon, R Oldeman, ME Olivares, CJG Onderwater, A Ossowska, JM Otalora Goicochea, T Ovsiannikova, P Owen, A Oyanguren, B Pagare, PR Pais, T Pajero, A Palano, M Palutan, Y Pan, G Panshin, A Papanestis, M Pappagallo, LL Pappalardo, C Pappenheimer, W Parker, C Parkes, CJ Parkinson, B Passalacqua, G Passaleva, A Pastore, M Patel, C Patrignani, CJ Pawley, A Pearce, A Pellegrino, M Pepe Altarelli, S Perazzini, D Pereima, P Perret, K Petridis, A Petrolini, A Petrov, S Petrucci, M Petruzzo, TTH Pham, A Philippov, L Pica, M Piccini, B Pietrzyk, G Pietrzyk, M Pili, D Pinci, F Pisani, A Piucci, PK Resmi, V Placinta, J Plews, M Plo Casasus, F Polci, M Poli Lener, M Poliakova, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, GJ Pomery, S Ponce, D Popov, S Popov, S Poslavskii, K Prasanth, L Promberger, C Prouve, V Pugatch, H Pullen, G Punzi, W Qian, J Qin, R Quagliani, B Quintana, NV Raab, RI Rabadan Trejo, B Rachwal, JH Rademacker, M Rama, M Ramos Pernas, MS Rangel, F Ratnikov, G Raven, M Reboud, F Redi, F Reiss, C Remon Alepuz, Z Ren, V Renaudin, R Ribatti, S Ricciardi, K Rinnert, P Robbe, A Robert, G Robertson, AB Rodrigues, E Rodrigues, JA Rodriguez Lopez, A Rollings, P Roloff, V Romanovskiy, M Romero Lamas, A Romero Vidal, JD Roth, M Rotondo, MS Rudolph, T Ruf, J Ruiz Vidal, A Ryzhikov, J Ryzka, JJ Saborido Silva, N Sagidova, N Sahoo, B Saitta, D Sanchez Gonzalo, C Sanchez Gras, R Santacesaria, C Santamarina Rios, M Santimaria, E Santovetti, D Saranin, G Sarpis, M Sarpis, A Sarti, C Satriano, A Satta, M Saur, D Savrina, H Sazak, LG Scantlebury Smead, S Schael, M Schellenberg, M Schiller, H Schindler, M Schmelling, B Schmidt, O Schneider, A Schopper, M Schubiger, S Schulte, MH Schune, R Schwemmer, B Sciascia, A Sciubba, S Sellam, A Semennikov, M Senghi Soares, A Sergi, N Serra, L Sestini, A Seuthe, P Seyfert, DM Shangase, M Shapkin, I Shchemerov, L Shchutska, T Shears, L Shekhtman, Z Shen, V Shevchenko, EB Shields, E Shmanin, JD Shupperd, BG Siddi, R Silva Coutinho, G Simi, S Simone, N Skidmore, T Skwarnicki, MW Slater, I Slazyk, JC Smallwood, JG Smeaton, A Smetkina, E Smith, M Smith, A Snoch, M Soares, L Soares Lavra, MD Sokoloff, FJP Soler, A Solovev, I Solovyev, FL Souza De Almeida, B Souza De Paula, B Spaan, E Spadaro Norella, P Spradlin, F Stagni, M Stahl, S Stahl, P Stefko, O Steinkamp, S Stemmle, O Stenyakin, H Stevens, S Stone, ME Stramaglia, M Straticiuc, D Strekalina, F Suljik, J Sun, L Sun, Y Sun, P Svihra, PN Swallow, K Swientek, A Szabelski, T Szumlak, M Szymanski, S Taneja, F Teubert, E Thomas, KA Thomson, MJ Tilley, V Tisserand, S T’Jampens, M Tobin, S Tolk, L Tomassetti, D Torres Machado, DY Tou, M Traill, MT Tran, E Trifonova, C Trippl, G Tuci, A Tully, N Tuning, A Ukleja, DJ Unverzagt, E Ursov, A Usachov, A Ustyuzhanin, U Uwer, A Vagner, V Vagnoni, A Valassi, G Valenti, N Valls Canudas, M van Beuzekom, M Van Dijk, E van Herwijnen, CB Van Hulse, M van Veghel, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, A Venkateswaran, M Veronesi, M Vesterinen, D Vieira, M Vieites Diaz, H Viemann, X Vilasis-Cardona, E Vilella Figueras, P Vincent, G Vitali, A Vollhardt, D Vom Bruch, A Vorobyev, V Vorobyev, N Voropaev, R Waldi, J Walsh, C Wang, J Wang, J Wang, J Wang, J Wang, M Wang, R Wang, Y Wang, Z Wang, HM Wark, NK Watson, SG Weber, D Websdale, C Weisser, BDC Westhenry, DJ White, M Whitehead, D Wiedner, G Wilkinson, M Wilkinson, I Williams, M Williams, MRJ Williams, FF Wilson, W Wislicki, M Witek, L Witola, G Wormser, SA Wotton, H Wu, K Wyllie, Z Xiang, D Xiao, Y Xie, A Xu, J Xu, L Xu, M Xu, Q Xu, Z Xu, Z Xu, D Yang, S Yang, Y Yang, Z Yang, Z Yang, Y Yao, LE Yeomans, H Yin, J Yu, X Yuan, O Yushchenko, E Zaffaroni, KA Zarebski, M Zavertyaev, M Zdybal, O Zenaiev, M Zeng, D Zhang, L Zhang, S Zhang, Y Zhang, Y Zhang, A Zhelezov, Y Zheng, X Zhou, Y Zhou, X Zhu, V Zhukov, JB Zonneveld, S Zucchelli, D Zuliani, G ZunicaHeavy-quark opportunities and challenges at FCC-ee
The European Physical Journal Plus Springer Nature 136:8 (2021) 837
Authors:
Stéphane Monteil, Guy WilkinsonObservation of New Resonances Decaying to J/ψK^{+} and J/ψϕ.
Physical review letters 127:8 (2021) 082001
Authors:
R Aaij, C Abellán Beteta, T Ackernley, B Adeva, M Adinolfi, H Afsharnia, CA Aidala, S Aiola, Z Ajaltouni, S Akar, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, G Alkhazov, P Alvarez Cartelle, S Amato, Y Amhis, L An, L Anderlini, A Andreianov, M Andreotti, F Archilli, A Artamonov, M Artuso, K Arzymatov, E Aslanides, M Atzeni, B Audurier, S Bachmann, M Bachmayer, JJ Back, S Baker, P Baladron Rodriguez, V Balagura, W Baldini, J Baptista Leite, RJ Barlow, S Barsuk, W Barter, M Bartolini, F Baryshnikov, JM Basels, G Bassi, B Batsukh, A Battig, A Bay, M Becker, F Bedeschi, I Bediaga, A Beiter, V Belavin, S Belin, V Bellee, K Belous, I Belov, I Belyaev, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, D Berninghoff, HC Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, Ia Bezshyiko, S Bhasin, J Bhom, L Bian, MS Bieker, S Bifani, P Billoir, M Birch, FCR Bishop, A Bitadze, A Bizzeti, M Bjørn, MP Blago, T Blake, F Blanc, S Blusk, D Bobulska, JA Boelhauve, O Boente Garcia, T Boettcher, A Boldyrev, A Bondar, N Bondar, S Borghi, M Borisyak, M Borsato, JT Borsuk, SA Bouchiba, TJV Bowcock, A Boyer, C Bozzi, MJ Bradley, S Braun, A Brea Rodriguez, M Brodski, J Brodzicka, A Brossa Gonzalo, D Brundu, A Buonaura, C Burr, A Bursche, A Butkevich, JS Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, L Calero Diaz, S Cali, R Calladine, M Calvi, M Calvo Gomez, P Camargo Magalhaes, A Camboni, P Campana, AF Campoverde Quezada, S Capelli, L Capriotti, A Carbone, G Carboni, R Cardinale, A Cardini, I Carli, P Carniti, L Carus, K Carvalho Akiba, A Casais Vidal, G Casse, M Cattaneo, G Cavallero, S Celani, J Cerasoli, AJ Chadwick, MG Chapman, M Charles, Ph Charpentier, G Chatzikonstantinidis, CA Chavez Barajas, M Chefdeville, C Chen, S Chen, A Chernov, V Chobanova, S Cholak, M Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, MF Cicala, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, JL Cobbledick, V Coco, JAB Coelho, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, L Congedo, A Contu, N Cooke, G Coombs, G Corti, CM Costa Sobral, B Couturier, DC Craik, J Crkovská, M Cruz Torres, R Currie, CL Da Silva, E Dall'Occo, J Dalseno, C D'Ambrosio, A Danilina, P d'Argent, A Davis, O De Aguiar Francisco, K De Bruyn, S De Capua, M De Cian, JM De Miranda, L De Paula, M De Serio, D De Simone, P De Simone, JA de Vries, CT Dean, D Decamp, L Del Buono, B Delaney, H-P Dembinski, A Dendek, V Denysenko, D Derkach, O Deschamps, F Desse, F Dettori, B Dey, P Di Nezza, S Didenko, L Dieste Maronas, H Dijkstra, V Dobishuk, AM Donohoe, F Dordei, AC Dos Reis, L Douglas, A Dovbnya, AG Downes, K Dreimanis, MW Dudek, L Dufour, V Duk, P Durante, JM Durham, D Dutta, M Dziewiecki, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, S Ek-In, L Eklund, S Ely, A Ene, E Epple, S Escher, J Eschle, S Esen, T Evans, A Falabella, J Fan, Y Fan, B Fang, S Farry, D Fazzini, P Fedin, M Féo, P Fernandez Declara, A Fernandez Prieto, JM Fernandez-Tenllado Arribas, F Ferrari, L Ferreira Lopes, F Ferreira Rodrigues, S Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, RA Fini, M Fiorini, M Firlej, KM Fischer, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, R Forty, V Franco Lima, M Franco Sevilla, M Frank, E Franzoso, G Frau, C Frei, DA Friday, J Fu, Q Fuehring, W Funk, E Gabriel, T Gaintseva, A Gallas Torreira, D Galli, S Gambetta, Y Gan, M Gandelman, P Gandini, Y Gao, M Garau, LM Garcia Martin, P Garcia Moreno, J García Pardiñas, B Garcia Plana, FA Garcia Rosales, L Garrido, C Gaspar, RE Geertsema, D Gerick, LL Gerken, E Gersabeck, M Gersabeck, T Gershon, D Gerstel, Ph Ghez, V Gibson, HK Giemza, M Giovannetti, A Gioventù, P Gironella Gironell, L Giubega, C Giugliano, K Gizdov, EL Gkougkousis, VV Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A Gomes, S Gomez Fernandez, F Goncalves Abrantes, M Goncerz, G Gong, P Gorbounov, IV Gorelov, C Gotti, E Govorkova, JP Grabowski, R Graciani Diaz, T Grammatico, LA Granado Cardoso, E Graugés, E Graverini, G Graziani, A Grecu, LM Greeven, P Griffith, L Grillo, S Gromov, BR Gruberg Cazon, C Gu, M Guarise, PA Günther, E Gushchin, A Guth, Y Guz, T Gys, T Hadavizadeh, G Haefeli, C Haen, J Haimberger, T Halewood-Leagas, PM Hamilton, Q Han, X Han, TH Hancock, S Hansmann-Menzemer, N Harnew, T Harrison, C Hasse, M Hatch, J He, M Hecker, K Heijhoff, K Heinicke, AM Hennequin, K Hennessy, L Henry, J Heuel, A Hicheur, D Hill, M Hilton, SE Hollitt, J Hu, J Hu, W Hu, W Huang, X Huang, W Hulsbergen, RJ Hunter, M Hushchyn, D Hutchcroft, D Hynds, P Ibis, M Idzik, D Ilin, P Ilten, A Inglessi, A Ishteev, K Ivshin, R Jacobsson, S Jakobsen, E Jans, BK Jashal, A Jawahery, V Jevtic, M Jezabek, F Jiang, M John, D Johnson, CR Jones, TP Jones, B Jost, N Jurik, S Kandybei, Y Kang, M Karacson, M Karpov, N Kazeev, F Keizer, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, KE Kim, T Kirn, VS Kirsebom, O Kitouni, S Klaver, K Klimaszewski, S Koliiev, A Kondybayeva, A Konoplyannikov, P Kopciewicz, R Kopecna, P Koppenburg, M Korolev, I Kostiuk, O Kot, S Kotriakhova, P Kravchenko, L Kravchuk, RD Krawczyk, M Kreps, F Kress, S Kretzschmar, P Krokovny, W Krupa, W Krzemien, W Kucewicz, M Kucharczyk, V Kudryavtsev, HS Kuindersma, GJ Kunde, T Kvaratskheliya, D Lacarrere, G Lafferty, A Lai, A Lampis, D Lancierini, JJ Lane, R Lane, G Lanfranchi, C Langenbruch, J Langer, O Lantwin, T Latham, F Lazzari, R Le Gac, SH Lee, R Lefèvre, A Leflat, S Legotin, O Leroy, T Lesiak, B Leverington, H Li, L Li, P Li, Y Li, Y Li, Z Li, X Liang, T Lin, R Lindner, V Lisovskyi, R Litvinov, G Liu, H Liu, S Liu, X Liu, A Loi, J Lomba Castro, I Longstaff, JH Lopes, GH Lovell, Y Lu, D Lucchesi, S Luchuk, M Lucio Martinez, V Lukashenko, Y Luo, A Lupato, E Luppi, O Lupton, A Lusiani, X Lyu, L Ma, S Maccolini, F Machefert, F Maciuc, V Macko, P Mackowiak, S Maddrell-Mander, O Madejczyk, LR Madhan Mohan, O Maev, A Maevskiy, D Maisuzenko, MW Majewski, JJ Malczewski, S Malde, B Malecki, A Malinin, T Maltsev, H Malygina, G Manca, G Mancinelli, R Manera Escalero, D Manuzzi, D Marangotto, J Maratas, JF Marchand, U Marconi, S Mariani, C Marin Benito, M Marinangeli, P Marino, J Marks, PJ Marshall, G Martellotti, L Martinazzoli, M Martinelli, D Martinez Santos, F Martinez Vidal, A Massafferri, M Materok, R Matev, A Mathad, Z Mathe, V Matiunin, C Matteuzzi, KR Mattioli, A Mauri, E Maurice, J Mauricio, M Mazurek, M McCann, L Mcconnell, TH Mcgrath, A McNab, R McNulty, JV Mead, B Meadows, C Meaux, G Meier, N Meinert, D Melnychuk, S Meloni, M Merk, A Merli, L Meyer Garcia, M Mikhasenko, DA Milanes, E Millard, M Milovanovic, M-N Minard, L Minzoni, SE Mitchell, B Mitreska, DS Mitzel, A Mödden, RA Mohammed, RD Moise, T Mombächer, IA Monroy, S Monteil, M Morandin, G Morello, MJ Morello, J Moron, AB Morris, AG Morris, R Mountain, H Mu, F Muheim, M Mukherjee, M Mulder, D Müller, K Müller, CH Murphy, D Murray, P Muzzetto, P Naik, T Nakada, R Nandakumar, T Nanut, I Nasteva, M Needham, I Neri, N Neri, S Neubert, N Neufeld, R Newcombe, TD Nguyen, C Nguyen-Mau, EM Niel, S Nieswand, N Nikitin, NS Nolte, C Nunez, A Oblakowska-Mucha, V Obraztsov, DP O'Hanlon, R Oldeman, ME Olivares, CJG Onderwater, A Ossowska, JM Otalora Goicochea, T Ovsiannikova, P Owen, A Oyanguren, B Pagare, PR Pais, T Pajero, A Palano, M Palutan, Y Pan, G Panshin, A Papanestis, M Pappagallo, LL Pappalardo, C Pappenheimer, W Parker, C Parkes, CJ Parkinson, B Passalacqua, G Passaleva, A Pastore, M Patel, C Patrignani, CJ Pawley, A Pearce, A Pellegrino, M Pepe Altarelli, S Perazzini, D Pereima, P Perret, K Petridis, A Petrolini, A Petrov, S Petrucci, M Petruzzo, TTH Pham, A Philippov, L Pica, M Piccini, B Pietrzyk, G Pietrzyk, M Pili, D Pinci, F Pisani, A Piucci, Resmi P K, V Placinta, J Plews, M Plo Casasus, F Polci, M Poli Lener, M Poliakova, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, GJ Pomery, S Ponce, D Popov, S Popov, S Poslavskii, K Prasanth, L 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Uwer, A Vagner, V Vagnoni, A Valassi, G Valenti, N Valls Canudas, M van Beuzekom, M Van Dijk, E van Herwijnen, CB Van Hulse, M van Veghel, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, A Venkateswaran, M Veronesi, M Vesterinen, D Vieira, M Vieites Diaz, H Viemann, X Vilasis-Cardona, E Vilella Figueras, P Vincent, G Vitali, A Vollhardt, D Vom Bruch, A Vorobyev, V Vorobyev, N Voropaev, R Waldi, J Walsh, C Wang, J Wang, J Wang, J Wang, J Wang, M Wang, R Wang, Y Wang, Z Wang, HM Wark, NK Watson, SG Weber, D Websdale, C Weisser, BDC Westhenry, DJ White, M Whitehead, D Wiedner, G Wilkinson, M Wilkinson, I Williams, M Williams, MRJ Williams, FF Wilson, W Wislicki, M Witek, L Witola, G Wormser, SA Wotton, H Wu, K Wyllie, Z Xiang, D Xiao, Y Xie, A Xu, J Xu, L Xu, M Xu, Q Xu, Z Xu, Z Xu, D Yang, Y Yang, Z Yang, Z Yang, Y Yao, LE Yeomans, H Yin, J Yu, X Yuan, O Yushchenko, E Zaffaroni, KA Zarebski, M Zavertyaev, M Zdybal, O Zenaiev, M Zeng, D Zhang, L Zhang, S Zhang, Y Zhang, Y Zhang, A Zhelezov, Y Zheng, X Zhou, Y Zhou, X Zhu, V Zhukov, JB Zonneveld, S Zucchelli, D Zuliani, G Zunica, LHCb CollaborationAbstract:
The first observation of exotic states with a new quark content cc[over ¯]us[over ¯] decaying to the J/ψK^{+} final state is reported with high significance from an amplitude analysis of the B^{+}→J/ψϕK^{+} decay. The analysis is carried out using proton-proton collision data corresponding to a total integrated luminosity of 9 fb^{-1} collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. The most significant state, Z_{cs}(4000)^{+}, has a mass of 4003±6_{-14}^{+4} MeV, a width of 131±15±26 MeV, and spin parity J^{P}=1^{+}, where the quoted uncertainties are statistical and systematic, respectively. A new 1^{+} X(4685) state decaying to the J/ψϕ final state is also observed with high significance. In addition, the four previously reported J/ψϕ states are confirmed and two more exotic states, Z_{cs}(4220)^{+} and X(4630), are observed with significance exceeding 5 standard deviations.Particle identification at FCC-ee
The European Physical Journal Plus Springer Nature 136:8 (2021) 835