Measurement Of The Direct Cp-Violating Charge Asymmetry In D-S(+/-) -> Phi Pi(+/-) Decays

V M Abazov,B Abbott,B S Acharya,M J Adams,Todd Adams,J P Agnew,G D Alexeev, G Alkhazov,A Alton,A Askew,S Atkins,K Augsten,C Avila,F Badaud,L Bagby,B Baldin,D V Bandurin,Sw Banerjee,E Barberis,P Baringer,J F Bartlett,U Bassler,V E Bazterra,A Bean,M Begalli,L Bellantoni,S B Beri,G Bernardi,R Bernhard,I Bertram,M Besancon,R Beuselinck,P C Bhat,S K Bhatia,V Bhatnagar,G Blazey,S Blessing,K Bloom,A Boehnlein,D Boline,E E Boos,G Borissov,A Brandt,Oleg Brandt,R Brock, A Bross,David A Brown,X B Bu,M Buehler,V Buescher,V Bunichev,S Burdin,C P Buszello, E Camachoperez,B C K Casey,H Castillavaldez,S Caughron,S Chakrabarti,K M Chan,A Chandra, E Chapon,G Chen,S W Cho,S Choi,B Choudhary,S Cihangir,D Claes,J Clutter,M Cooke,W E Cooper,M Corcoran,F Couderc,M C Cousinou,D Cutts,Arpita Das,G Davies, S J De Jong,E De La Cruzburelo,F Deliot,R Demina,D Denisov,S P Denisov,S Desai,C Deterre,K Devaughan,H T Diehl,M Diesburg,P F Ding,Aaron Dominguez,A K Dubey,L V Dudko,A Duperrin,S Dutt, M Eads,D Edmunds,J Ellison,V D Elvira,Y Enari,H Evans,V N Evdokimov,Lei Feng,T Ferbel,F Fiedler,F Filthaut,W Fisher,H E Fisk,M Fortner,Harald Fox,S Fuess,P H Garbincius,A Garciabellido,J A Garciagonzalez,V Gavrilov,W Geng,C E Gerber,Y Gershtein,G Ginther,G Golovanov,P D Grannis, S Greder,H Greenlee,G Grenier,Ph Gris,J F Grivaz,A Grohsjean,S Gruenendahl,M W Gruenewald,T Guillemin,G Gutierrez,Peter R Gutierrez,J Haley,L Han,K Harder,A Harel,J M Hauptman,J Hays,T Head, T Hebbeker,D Hedin,Hatim Hegab,A P Heinson,U Heintz,C Hensel, I Herediade La Cruz,K Herner,G Hesketh,M D Hildreth,R Hirosky, T Hoang,J D Hobbs,B Hoeneisen,J Hogan,M Hohlfeld,J L Holzbauer,I Howley,Z Hubacek,V Hynek,I Iashvili,Y Ilchenko,R Illingworth,A S Ito,S Jabeen, M Jaffre,A Jayasinghe,M S Jeong, R Jesik,Peng Jiang, K Johns,E Johnson,M Johnson, A Jonckheere,P Jonsson,J B Joshi, A W Jung,A Juste,E Kajfasz,D Karmanov,I Katsanos,R Kehoe,S Kermiche,N Khalatyan,A Khanov,A Kharchilava,Y N Kharzheev,I Kiselevich,J M Kohli,A V Kozelov,J Kraus,Ashish Kumar,A Kupco,T Kurca,V A Kuzmin,S Lammers,P Lebrun,Hong Sik Lee, S W Lee,W M Lee,X Lei,Jeremie Lellouch, D Li,Hongxiang Li,Lin Li,Q Z Li,J K Lim,D Lincoln,J Linnemann,V V Lipaev, R Lipton,Hailong Liu,Ying Liu,A Lobodenko,M Lokajicek,R Lopes De Sa,R Lunagarcia,A L Lyon, A K A Maciel,R Madar,R Maganavillalba,S Malik,V L Malyshev,John C Mansour,J Martinezortega,R Mccarthy,C L Mcgivern,M M Meijer,A Melnitchouk,D Menezes,P G Mercadante,M Merkin,A Meyer,J Meyer,F Miconi,N K Mondal,M Mulhearn,E Nagy,M Narain,R Nayyar,H A Neal,J P Negret,P Neustroev, H T Nguyen,T Nunnemann,J Orduna,N Osman,J Osta,Amarta Kumar Pal,N Parashar,V Parihar,S K Park,R Partridge,N Parua,A Patwa,B Penning, M Perfilov,Y Peters,K Petridis,G Petrillo, P Petroff,M A Pleier,V M Podstavkov,A V Popov,M Prewitt,David Long Price, N Prokopenko,Jiansheng Qian,A Quadt,B Quinn,P N Ratoff,I Razumov,I Rippbaudot,F Rizatdinova, M Rominsky,Alan D Ross,C Royon,P Rubinov,R Ruchti, G Sajot,A Sanchezhernandez,M P Sanders,A S Santos,G Savage,L Sawyer,T Scanlon,R D Schamberger,Y Scheglov,H Schellman,C Schwanenberger,R Schwienhorst, J Sekaric,H Severini,E Shabalina, V Shary,S Shaw,A A Shchukin,V Simak,P Skubic, P Slattery,D Smirnov,G R Snow,J Snow,S Snyder,S Soldnerrembold,L Sonnenschein,K Soustruznik,Jan Stark,D A Stoyanova,M Strauss,L J Suter,P Svoisky,M Titov,V V Tokmenin,Y T Tsai,D Tsybychev,B Tuchming,C Tully,L Uvarov,S Uvarov,S Uzunyan,R Van Kooten,W M Van Leeuwen,N Varelas,E W Varnes,I A Vasilyev,A Y Verkheev,L S Vertogradov,M Verzocchi,M Vesterinen,D Vilanova, P Vokac,H D Wahl,M H L S Wang,Jadwiga Warchol,G Watts,M Wayne,J Weichert,L Weltyrieger,M R J Williams,G W Wilson,M Wobisch,D R Wood,T R Wyatt,Y Xie,R Yamada,Shengyong Yang,T Yasuda,Y A Yatsunenko,W Ye,Zhongfu Ye,Hongda Yin,K Yip,S W Youn,J M Yu,J Zennamo,T G Zhao, Bo Zhou,Jianhua Zhu,M Zielinski,D Zieminska,L Zivkovic

PHYSICAL REVIEW LETTERS（2014）

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摘要

We present a measurement of the direct CP-violating charge asymmetry in D-s(+) -> phi pi(+/-) decays where the phi meson decays to K+ K-, using the full Run II data set with an integrated luminosity of 10.4 fb(-1) of proton- antiproton collisions collected using the D0 detector at the Fermilab Tevatron Collider. The normalized difference A(CP) in the yield of D-s(+) and D-s(-) mesons in these decays is measured by fitting the difference between their reconstructed invariant mass distributions. This results in an asymmetry of A(CP) = [-0.38 +/- 0.27]%, which is the most precise measurement of this quantity to date. The result is consistent with the standard model prediction of zero CP asymmetry in this decay.

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