First evidence of direct CP violation in charmless two-body decays of Bs0 mesons

R Aaij; LHCb Collaboration; C Abellan Beteta; B Adeva; M Adinolfi; C Adrover; A Affolder; Z Ajaltouni; J Albrecht; F Alessio; M Alexander; S Ali; G Alkhazov; P Alvarez Cartelle; A A Alves Jr; S Amato; Y Amhis; J Anderson; R B Appleby; O Aquines Gutierrez; F Archilli; L Arrabito; A Artamonov; M Artuso; E Aslanides; G Auriemma; S Bachmann; J J Back; V Balagura; W Baldini; R J Barlow; C Barschel; S Barsuk; W Barter; A Bates; C Bauer; Th Bauer; A Bay; I Bediaga; S Belogurov; K Belous; I Belyaev; E Ben-Haim; M Benayoun; G Bencivenni; S Benson; J Benton; R Bernet; M-O Bettler; M van Beuzekom; A Bien; S Bifani; T Bird; A Bizzeti; P M Bjørnstad; T Blake; F Blanc; C Blanks; J Blouw; S Blusk; A Bobrov; V Bocci; A Bondar; N Bondar; W Bonivento; S Borghi; A Borgia; T J V Bowcock; C Bozzi; T Brambach; J van den Brand; J Bressieux; D Brett; M Britsch; T Britton; N H Brook; H Brown; A Büchler-Germann; I Burducea; A Bursche; J Buytaert; S Cadeddu; O Callot; M Calvi; M Calvo Gomez; A Camboni; P Campana; A Carbone; G Carboni; R Cardinale; A Cardini; L Carson; K Carvalho Akiba; G Casse; M Cattaneo; Ch Cauet; M Charles; Ph Charpentier; N Chiapolini; K Ciba; X Cid Vidal; G Ciezarek; P E L Clarke; M Clemencic; H V Cliff; J Closier; C Coca; V Coco; J Cogan; P Collins; A Comerma-Montells; A Contu; A Cook; M Coombes; G Corti; B Couturier; G A Cowan; R Currie; C D'Ambrosio; P David; P N Y David; I De Bonis; K De Bruyn; S De Capua; M De Cian; F De Lorenzi; J M De Miranda; L De Paula; P De Simone; D Decamp; M Deckenhoff; H Degaudenzi; L Del Buono; C Deplano; D Derkach; O Deschamps; F Dettori; J Dickens; H Dijkstra; P Diniz Batista; F Domingo Bonal; S Donleavy; F Dordei; A Dosil Suárez; D Dossett; A Dovbnya; F Dupertuis; R Dzhelyadin; A Dziurda; S Easo; U Egede; V Egorychev; S Eidelman; D van Eijk; F Eisele; S Eisenhardt; R Ekelhof; L Eklund; Ch Elsasser; D Elsby; D Esperante Pereira; A Falabella; C Färber; G Fardell; C Farinelli; S Farry; V Fave; V Fernandez Albor; M Ferro-Luzzi; S Filippov; C Fitzpatrick; M Fontana; F Fontanelli; R Forty; O Francisco; M Frank; C Frei; M Frosini; S Furcas; A Gallas Torreira; D Galli; M Gandelman; P Gandini; Y Gao; J-C Garnier; J Garofoli; J Garra Tico; L Garrido; D Gascon; C Gaspar; R Gauld; N Gauvin; M Gersabeck; T Gershon; Ph Ghez; V Gibson; V V Gligorov; C Göbel; D Golubkov; A Golutvin; A Gomes; H Gordon; M Grabalosa Gándara; R Graciani Diaz; L A Granado Cardoso; E Graugés; G Graziani; A Grecu; E Greening; S Gregson; B Gui; E Gushchin; Yu Guz; T Gys; C Hadjivasiliou; G Haefeli; C Haen; S C Haines; T Hampson; S Hansmann-Menzemer; R Harji; N Harnew; J Harrison; P F Harrison; T Hartmann; J He; V Heijne; K Hennessy; P Henrard; J A Hernando Morata; E van Herwijnen; E Hicks; K Holubyev; P Hopchev; W Hulsbergen; P Hunt; T Huse; R S Huston; D Hutchcroft; D Hynds; V Iakovenko; P Ilten; J Imong; R Jacobsson; A Jaeger; M Jahjah Hussein; E Jans; F Jansen; P Jaton; B Jean-Marie; F Jing; M John; D Johnson; C R Jones; B Jost; M Kaballo; S Kandybei; M Karacson; T M Karbach; J Keaveney; I R Kenyon; U Kerzel; T Ketel; A Keune; B Khanji; Y M Kim; M Knecht; R F Koopman; P Koppenburg; M Korolev; A Kozlinskiy; L Kravchuk; K Kreplin; M Kreps; G Krocker; P Krokovny; F Kruse; K Kruzelecki; M Kucharczyk; V Kudryavtsev; T Kvaratskheliya; V N La Thi; D Lacarrere; G Lafferty; A Lai; D Lambert; R W 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; O Leroy; T Lesiak; L Li; L Li Gioi; M Lieng; M Liles; R Lindner; C Linn; B Liu; G Liu; J von Loeben; J H Lopes; E Lopez Asamar; N Lopez-March; H Lu; J Luisier; A Mac Raighne; F Machefert; I V Machikhiliyan; F Maciuc; O Maev; J Magnin; S Malde; R M D Mamunur; G Manca; G Mancinelli; N Mangiafave; U Marconi; R Märki; J Marks; G Martellotti; A Martens; L Martin; A Martín Sánchez; M Martinelli; D Martinez Santos; A Massafferri; Z Mathe; C Matteuzzi; M Matveev; E Maurice; B Maynard; A Mazurov; G McGregor; R McNulty; M Meissner; M Merk; J Merkel; S Miglioranzi; D A Milanes; M-N Minard; J Molina Rodriguez; S Monteil; D Moran; P Morawski; R Mountain; I Mous; F Muheim; K Müller; R Muresan; B Muryn; B Muster; J Mylroie-Smith; P Naik; T Nakada; R Nandakumar; I Nasteva; M Needham; N Neufeld; A D Nguyen; C Nguyen-Mau; M Nicol; V Niess; N Nikitin; T Nikodem; A Nomerotski; A Novoselov; A Oblakowska-Mucha; V Obraztsov; S Oggero; S Ogilvy; O Okhrimenko; R Oldeman; M Orlandea; J M Otalora Goicochea; P Owen; K B Pal; J Palacios; A Palano; M Palutan; J Panman; A Papanestis; M Pappagallo; C Parkes; C J Parkinson; G Passaleva; G D Patel; M Patel; S K Paterson; G N Patrick; C Patrignani; C Pavel-Nicorescu; A Pazos Alvarez; A Pellegrino; G Penso; M Pepe Altarelli; S Perazzini; D L Perego; E Perez Trigo; A Pérez-Calero Yzquierdo; P Perret; M Perrin-Terrin; G Pessina; A Petrolini; A Phan; E Picatoste Olloqui; B Pie Valls; B Pietrzyk; T Pilař; D Pinci; R Plackett; S Playfer; M Plo Casasus; G Polok; A Poluektov; E Polycarpo; D Popov; B Popovici; C Potterat; A Powell; J Prisciandaro; V Pugatch; A Puig Navarro; W Qian; J H Rademacker; B Rakotomiaramanana; M S Rangel; I Raniuk; G Raven; S Redford; M M Reid; A C dos Reis; S Ricciardi; A Richards; K Rinnert; D A Roa Romero; P Robbe; E Rodrigues; F Rodrigues; P Rodriguez Perez; G J Rogers; S Roiser; V Romanovsky; M Rosello; J Rouvinet; T Ruf; H Ruiz; G Sabatino; J J Saborido Silva; N Sagidova; P Sail; B Saitta; C Salzmann; M Sannino; R Santacesaria; C Santamarina Rios; R Santinelli; E Santovetti; M Sapunov; A Sarti; C Satriano; A Satta; M Savrie; D Savrina; P Schaack; M Schiller; S Schleich; 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; P Shatalov; Y Shcheglov; T Shears; L Shekhtman; O Shevchenko; V Shevchenko; A Shires; R Silva Coutinho; T Skwarnicki; N A Smith; E Smith; K Sobczak; F J P Soler; A Solomin; F Soomro; B Souza De Paula; B Spaan; A Sparkes; P Spradlin; F Stagni; S Stahl; O Steinkamp; S Stoica; S Stone; B Storaci; M Straticiuc; U Straumann; V K Subbiah; S Swientek; M Szczekowski; P Szczypka; T Szumlak; S T'jampens; E Teodorescu; F Teubert; C Thomas; E Thomas; J van Tilburg; V Tisserand; M Tobin; S Tolk; S Topp-Joergensen; N Torr; E Tournefier; S Tourneur; M T Tran; A Tsaregorodtsev; N Tuning; M Ubeda Garcia; A Ukleja; P Urquijo; U Uwer; V Vagnoni; G Valenti; R Vazquez Gomez; P Vazquez Regueiro; S Vecchi; J J Velthuis; M Veltri; B Viaud; I Videau; D Vieira; X Vilasis-Cardona; J Visniakov; A Vollhardt; D Volyanskyy; D Voong; A Vorobyev; V Vorobyev; H Voss; R Waldi; S Wandernoth; J Wang; D R Ward; N K Watson; A D Webber; D Websdale; M Whitehead; D Wiedner; L Wiggers; G Wilkinson; M P Williams; M Williams; F F Wilson; J Wishahi; M Witek; W Witzeling; S A Wotton; K Wyllie; Y Xie; F Xing; Z Xing; Z Yang; R Young; O Yushchenko; M Zangoli; M Zavertyaev; F Zhang; L Zhang; W C Zhang; Y Zhang; A Zhelezov; L Zhong; A Zvyagin

doi:10.1103/PhysRevLett.108.201601

First evidence of direct CP violation in charmless two-body decays of Bs0 mesons

Phys Rev Lett. 2012 May 18;108(20):201601. doi: 10.1103/PhysRevLett.108.201601. Epub 2012 May 16.

Authors

R Aaij¹; LHCb Collaboration; C Abellan Beteta, B Adeva, M Adinolfi, C Adrover, A Affolder, Z Ajaltouni, J Albrecht, F Alessio, M Alexander, S Ali, G Alkhazov, P Alvarez Cartelle, A A Alves Jr, S Amato, Y Amhis, J Anderson, R B Appleby, O Aquines Gutierrez, F Archilli, L Arrabito, A Artamonov, M Artuso, E Aslanides, G Auriemma, S Bachmann, J J Back, V Balagura, W Baldini, R J Barlow, C Barschel, S Barsuk, W Barter, A Bates, C Bauer, Th Bauer, A Bay, I Bediaga, S Belogurov, K Belous, I Belyaev, E Ben-Haim, M Benayoun, G Bencivenni, S Benson, J Benton, R Bernet, M-O Bettler, M van Beuzekom, A Bien, S Bifani, T Bird, A Bizzeti, P M Bjørnstad, T Blake, F Blanc, C Blanks, J Blouw, S Blusk, A Bobrov, V Bocci, A Bondar, N Bondar, W Bonivento, S Borghi, A Borgia, T J V Bowcock, C Bozzi, T Brambach, J van den Brand, J Bressieux, D Brett, M Britsch, T Britton, N H Brook, H Brown, A Büchler-Germann, I Burducea, A Bursche, J Buytaert, S Cadeddu, O Callot, M Calvi, M Calvo Gomez, A Camboni, P Campana, A Carbone, G Carboni, R Cardinale, A Cardini, L Carson, K Carvalho Akiba, G Casse, M Cattaneo, Ch Cauet, M Charles, Ph Charpentier, N Chiapolini, K Ciba, X Cid Vidal, G Ciezarek, P E L Clarke, M Clemencic, H V Cliff, J Closier, C Coca, V Coco, J Cogan, P Collins, A Comerma-Montells, A Contu, A Cook, M Coombes, G Corti, B Couturier, G A Cowan, R Currie, C D'Ambrosio, P David, P N Y David, I De Bonis, K De Bruyn, S De Capua, M De Cian, F De Lorenzi, J M De Miranda, L De Paula, P De Simone, D Decamp, M Deckenhoff, H Degaudenzi, L Del Buono, C Deplano, D Derkach, O Deschamps, F Dettori, J Dickens, H Dijkstra, P Diniz Batista, F Domingo Bonal, S Donleavy, F Dordei, A Dosil Suárez, D Dossett, A Dovbnya, F Dupertuis, R Dzhelyadin, A Dziurda, S Easo, U Egede, V Egorychev, S Eidelman, D van Eijk, F Eisele, S Eisenhardt, R Ekelhof, L Eklund, Ch Elsasser, D Elsby, D Esperante Pereira, A Falabella, C Färber, G Fardell, C Farinelli, S Farry, V Fave, V Fernandez Albor, M Ferro-Luzzi, S Filippov, C Fitzpatrick, M Fontana, F Fontanelli, R Forty, O Francisco, M Frank, C Frei, M Frosini, S Furcas, A Gallas Torreira, D Galli, M Gandelman, P Gandini, Y Gao, J-C Garnier, J Garofoli, J Garra Tico, L Garrido, D Gascon, C Gaspar, R Gauld, N Gauvin, M Gersabeck, T Gershon, Ph Ghez, V Gibson, V V Gligorov, C Göbel, D Golubkov, A Golutvin, A Gomes, H Gordon, M Grabalosa Gándara, R Graciani Diaz, L A Granado Cardoso, E Graugés, G Graziani, A Grecu, E Greening, S Gregson, B Gui, E Gushchin, Yu Guz, T Gys, C Hadjivasiliou, G Haefeli, C Haen, S C Haines, T Hampson, S Hansmann-Menzemer, R Harji, N Harnew, J Harrison, P F Harrison, T Hartmann, J He, V Heijne, K Hennessy, P Henrard, J A Hernando Morata, E van Herwijnen, E Hicks, K Holubyev, P Hopchev, W Hulsbergen, P Hunt, T Huse, R S Huston, D Hutchcroft, D Hynds, V Iakovenko, P Ilten, J Imong, R Jacobsson, A Jaeger, M Jahjah Hussein, E Jans, F Jansen, P Jaton, B Jean-Marie, F Jing, M John, D Johnson, C R Jones, B Jost, M Kaballo, S Kandybei, M Karacson, T M Karbach, J Keaveney, I R Kenyon, U Kerzel, T Ketel, A Keune, B Khanji, Y M Kim, M Knecht, R F Koopman, P Koppenburg, M Korolev, A Kozlinskiy, L Kravchuk, K Kreplin, M Kreps, G Krocker, P Krokovny, F Kruse, K Kruzelecki, M Kucharczyk, V Kudryavtsev, T Kvaratskheliya, V N La Thi, D Lacarrere, G Lafferty, A Lai, D Lambert, R W 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, O Leroy, T Lesiak, L Li, L Li Gioi, M Lieng, M Liles, R Lindner, C Linn, B Liu, G Liu, J von Loeben, J H Lopes, E Lopez Asamar, N Lopez-March, H Lu, J Luisier, A Mac Raighne, F Machefert, I V Machikhiliyan, F Maciuc, O Maev, J Magnin, S Malde, R M D Mamunur, G Manca, G Mancinelli, N Mangiafave, U Marconi, R Märki, J Marks, G Martellotti, A Martens, L Martin, A Martín Sánchez, M Martinelli, D Martinez Santos, A Massafferri, Z Mathe, C Matteuzzi, M Matveev, E Maurice, B Maynard, A Mazurov, G McGregor, R McNulty, M Meissner, M Merk, J Merkel, S Miglioranzi, D A Milanes, M-N Minard, J Molina Rodriguez, S Monteil, D Moran, P Morawski, R Mountain, I Mous, F Muheim, K Müller, R Muresan, B Muryn, B Muster, J Mylroie-Smith, P Naik, T Nakada, R Nandakumar, I Nasteva, M Needham, N Neufeld, A D Nguyen, C Nguyen-Mau, M Nicol, V Niess, N Nikitin, T Nikodem, A Nomerotski, A Novoselov, A Oblakowska-Mucha, V Obraztsov, S Oggero, S Ogilvy, O Okhrimenko, R Oldeman, M Orlandea, J M Otalora Goicochea, P Owen, K B Pal, J Palacios, A Palano, M Palutan, J Panman, A Papanestis, M Pappagallo, C Parkes, C J Parkinson, G Passaleva, G D Patel, M Patel, S K Paterson, G N Patrick, C Patrignani, C Pavel-Nicorescu, A Pazos Alvarez, A Pellegrino, G Penso, M Pepe Altarelli, S Perazzini, D L Perego, E Perez Trigo, A Pérez-Calero Yzquierdo, P Perret, M Perrin-Terrin, G Pessina, A Petrolini, A Phan, E Picatoste Olloqui, B Pie Valls, B Pietrzyk, T Pilař, D Pinci, R Plackett, S Playfer, M Plo Casasus, G Polok, A Poluektov, E Polycarpo, D Popov, B Popovici, C Potterat, A Powell, J Prisciandaro, V Pugatch, A Puig Navarro, W Qian, J H Rademacker, B Rakotomiaramanana, M S Rangel, I Raniuk, G Raven, S Redford, M M Reid, A C dos Reis, S Ricciardi, A Richards, K Rinnert, D A Roa Romero, P Robbe, E Rodrigues, F Rodrigues, P Rodriguez Perez, G J Rogers, S Roiser, V Romanovsky, M Rosello, J Rouvinet, T Ruf, H Ruiz, G Sabatino, J J Saborido Silva, N Sagidova, P Sail, B Saitta, C Salzmann, M Sannino, R Santacesaria, C Santamarina Rios, R Santinelli, E Santovetti, M Sapunov, A Sarti, C Satriano, A Satta, M Savrie, D Savrina, P Schaack, M Schiller, S Schleich, 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, P Shatalov, Y Shcheglov, T Shears, L Shekhtman, O Shevchenko, V Shevchenko, A Shires, R Silva Coutinho, T Skwarnicki, N A Smith, E Smith, K Sobczak, F J P Soler, A Solomin, F Soomro, B Souza De Paula, B Spaan, A Sparkes, P Spradlin, F Stagni, S Stahl, O Steinkamp, S Stoica, S Stone, B Storaci, M Straticiuc, U Straumann, V K Subbiah, S Swientek, M Szczekowski, P Szczypka, T Szumlak, S T'jampens, E Teodorescu, F Teubert, C Thomas, E Thomas, J van Tilburg, V Tisserand, M Tobin, S Tolk, S Topp-Joergensen, N Torr, E Tournefier, S Tourneur, M T Tran, A Tsaregorodtsev, N Tuning, M Ubeda Garcia, A Ukleja, P Urquijo, U Uwer, V Vagnoni, G Valenti, R Vazquez Gomez, P Vazquez Regueiro, S Vecchi, J J Velthuis, M Veltri, B Viaud, I Videau, D Vieira, X Vilasis-Cardona, J Visniakov, A Vollhardt, D Volyanskyy, D Voong, A Vorobyev, V Vorobyev, H Voss, R Waldi, S Wandernoth, J Wang, D R Ward, N K Watson, A D Webber, D Websdale, M Whitehead, D Wiedner, L Wiggers, G Wilkinson, M P Williams, M Williams, F F Wilson, J Wishahi, M Witek, W Witzeling, S A Wotton, K Wyllie, Y Xie, F Xing, Z Xing, Z Yang, R Young, O Yushchenko, M Zangoli, M Zavertyaev, F Zhang, L Zhang, W C Zhang, Y Zhang, A Zhelezov, L Zhong, A Zvyagin

Affiliation

¹ Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.

PMID: 23003138
DOI: 10.1103/PhysRevLett.108.201601

Abstract

Using a data sample corresponding to an integrated luminosity of 0.35 fb-1 collected by LHCb in 2011, we report the first evidence of CP violation in the decays of Bs0} mesons to K±π∓ pairs, ACP(Bs0→Kπ)=0.27±0.08(stat)±0.02(syst), with a significance of 3.3σ. Furthermore, we report the most precise measurement of CP violation in the decays of B0 mesons to K±π∓ pairs, ACP(B0→Kπ)=-0.088±0.011(stat)±0.008(syst), with a significance exceeding 6σ.