Measurements of DirectCPViolating Asymmetries in Charmless Decays of Strange Bottom Mesons and Bottom Baryons

T Aaltonen,G Lungu,Y D Oh,M Feindt,A Cerri,D Krop,A Barbaro-Galtieri,A Buzatu,T Lecompte,F Chlebana,A Warburton,B Stelzer,P Lujan,C Bromberg,M Corbo,C A Cox,D Jang,B Auerbach,I Oksuzian,A Lath,A Artikov,T Shears,T Wright,M Kruse,M Hare,C Grosso-Pilcher,G Giurgiu,A Beretvas,B Jayatilaka,D J Cox,M Heck,I Bizjak,T Yoshida,M K Jha,P Murat,G L Strycker,M Herndon,K Cho,A F Garfinkel,L Pondrom,P Giannetti,G Apollinari,A Sfyrla,C Paus,N Hussain,P Mastrandrea,F Prokoshin,N S Lockyer,W Ashmanskas,G Velev,S Pagan Griso,M Lancaster,J P Chou,M Dell’Orso,P Giromini,W Johnson,I Vila,Q Liu,J Naganoma,J S Lee,A Loginov,M J Morello,J Lueck,R Carosi,J D Lewis,M E Convery,F Crescioli,I Lazzizzera,H Miyake,A Golossanov,Z Wu,G A Thompson,B Whitehouse,G Flanagan,L Cerrito,D Whiteson,M Mussini,K Kondo,F Sforza,F Ukegawa,M Goncharov,E Nurse,S Hewamanage,D Benjamin,S Wolbers,T Kuhr,R Erbacher,J Tang,A Canepa,A Soha,J Pursley,A Rahaman,N Goldschmidt,B Carls,M Deninno,B L Winer,B Casal,B Álvarez González,A Scribano,P Wagner,J Strologas,V Glagolev,N Ranjan,A Boveia,M Binkley,M E Mattson,C Plager,C Mesropian,J Thome,S Uozumi,P De Barbaro,F Margaroli,Y Tu,R Forrest,H W Kim,P Movilla Fernandez,C Vellidis,K Hara,K K Joo,M Vogel,T Dorigo,K Lannon,P Mcintyre,H S Budd,A Bodek,G Introzzi,C M Ginsburg,R Culbertson,D Stentz,A Annovi,G Punzi,J Thom,C I Ciobanu,B A Barnett,A Aurisano,O Norniella,W Ketchum,T Rodriguez,S Y Jun,J Morlock,M P Schmidt,U Husemann,G B Yu,A Schmidt,K Yi,G Piacentino,E Halkiadakis,B Blumenfeld,D Cauz,A Hamaguchi,D Carlsmith,S Leo,M Hurwitz,H C Fang,J Keung,M Kreps,N Giokaris,P F Shepard,D Goldin,S S Yu,G Manca,S Carrillo,P Barria,S Budd,Y Sakurai,T Tomura,J Boudreau,M Campbell,J Budagov,F Scuri,J A Appel,S Behari,J Nett,Y Seiya,K S Mcfarland,M Mathis,J Conway,J Huston,F Azfar,M Hussein,M Lindgren,K Pitts,R Vilar,K Makhoul,D Mietlicki,A Menzione,J Vizán,S Lami,V Papadimitriou,K Takemasa,S W Lee,M Shimojima,K Sato,G De Lorenzo,K Sliwa,K Goulianos,A Bhatti,J Bellinger,P Renton,C Neu,A Varganov,C Calancha,P Dong,T Liu,P Sinervo,C Marino,P Catastini,R Roser,S Rolli,Y Zeng,N D’Ascenzo,A Ruiz,D Lucchesi,Y C Chen,K Yamamoto,H H Williams,F Canelli,S Grinstein,S Zucchelli,K Burkett,H S Lee,K Yorita,S Camarda,O Poukhov,D H Kim,V Khotilovich,P Totaro,M D’Onofrio,G Chiarelli,B Di Ruzza,A Di Canto,N Kimura,B Brau,Y Funakoshi,T Rodrigo,D Errede,L Demortier,L Oakes,O Stelzer-Chilton,F Rimondi,M Giunta,V Rusu,K Hatakeyama,Y Sudo,M S Neubauer,M Campanelli,J Heinrich,J E Kim,J E Garcia,I Yu,Y S Chung,G Bellettini,P Garosi,A Bocci,D Hare,A Semenov,A Anastassov,R Eusebi,Y K Kim,J Kroll,A Mitra,F Ruffini,S Jindariani,J Galyardt,M Stancari,S Lockwitz,C Haber,A Castro,V Cavaliere,I Redondo,S Torre,S Tkaczyk,A Brisuda,E Wicklund,J Nielsen,C Deluca,A Sedov,S Errede,Y Nagai,J Yamaoka,F Rubbo,E Pueschel,A Ivanov,M Paulini,E Thomson,A Eppig,A Zanetti,M Casarsa,F Devoto,P E Karchin,A Pronko,D Waters,S B Kim,A Mehta,D Torretta,Y C Yang,A Lister,G P Yeh,S Amerio,W K Sakumoto,A Gresele,M Gallinaro,R St Denis,T Arisawa,I Gorelov,M Cordelli,S Kwang,H S Kim,F Bedeschi,K Tollefson,D Amidei,G Compostella,E Pianori,M Vidal,J S Wilson,F Happacher,L Brigliadori,S Somalwar,P Wittich,W C Wester,M Kirby,K Potamianos,R Mcnulty,R Moore,F Wick,A Mukherjee,M Trovato,V E Barnes,A Sissakian,L Santi,K Ebina,D J Kong,R Orava,P Lukens,R Wallny,I Shreyber,D Chokheli,C Cuenca Almenar,C Liu,D Tonelli,E E Schmidt,A Safonov,Y Kato,M Bucciantonio,P Mazzanti,T R Junk,E Lee,P Schlabach,D Hidas,G Chlachidze,A Apresyan,J Pilot,U K Yang,I Nakano,J Cuevas,S Giagu,P Ttito-Guzmán,L Ristori,P Bussey,Z Gunay-Unalan,M Weinberger,S Shiraishi,V Krutelyov,M Chertok,D Bisello,E Gerchtein,M Franklin,L Nodulman,O González,M Rescigno,E Lipeles,Y Takeuchi,R L Wagner,A Elagin,N Krumnack,M Rossi,M Jones,S H Oh,M J Kim,A Robson,N Moggi,S De Cecco,H Gerberich,P Squillacioti,F Ptohos,L Ortolan,K Gibson,M Dorigo,D Toback,S Carron,S Donati,M Tecchio,S Klimenko,J Lys,T J Phillips,W H Chung,G Bauer,A T Goshaw,H Wolfe,F Vázquez,M Gold,S Leone,J Linacre,A Savoy-Navarro,M Schmitt,S M Wang,T Miao,J Asaadi,P Wilson,E J Jeon,A Manousakis-Katsikakis,C Ferrazza,J Russ,T Yang,M A Ciocci,A Clark,G Busetto,E Rogers,M Bauce,M Iori,W Badgett,S Wilbur,J R Smith,S H Kim,K Maeshima,G Pauletta,T Kamon,M Kurata,C S Moon,J C Yun,C Pagliarone,F D Snider,J Nachtman,A Napier,J Patrick,G Volpi,T Okusawa,E James,M Datta,A T Laasanen,J Deng,P K Teng,X Wu,S R Hahn,D O Litvintsev,K R Bland,S Lammel,S Malik,R Madrak,E Palencia,B Kilminster,N Ershaidat,D Bortoletto,A Penzo,L Sartori,M J Frank,L Scodellaro,S Hou,J Yoh,G Latino,V Ramakrishnan,A B Wicklund,T Wakisaka,D Dagenhart,V Saveliev,D Beecher,M D’Errico,A Höcker ,E Brücken ,V A Giakoumopoulou ,R Lysák ,M N Mondragón ,David Horn ,Th Müller ,M Cavalli‐Sforza ,S C Seidel ,M J Shochet ,J Dittmann ,S Tokár ,A Kotwal ,M M Stanitzki ,J Han ,А Симоненко ,P Bartoš ,C J Lin ,M Martı́nez ,P Mehtälä ,D Glenzinskí ,A Paramonov ,J Antos̆ ,А Суханов ,W H Hopkins ,I K Furic ,S Shalhout ,R Lander ,W-M Yao ,P Maksimović ,R Hughes ,И Суслов ,D Pellett ,S M Farrington ,J Freeman ,C P Hays ,S Moêd ,J Königsberg ,G Gómez-Ceballos ,J P Fernández ,J Guimarães Da Costa ,R Harr ,G Gómez ,Thomas Schwarz ,R Mart́ínez-Ballaŕın ,V Sorı́n ,R D Field

doi:10.1103/physrevlett.106.181802

Abstract

We report measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb(-1) of integrated luminosity, we obtain the first measurements of direct CP violation in bottom strange mesons, A(CP)(B(s)(0)→K(-)π(+))=+0.39±0.15(stat)±0.08(syst), and bottom baryons, A(CP)(Λ(b)(0)→pπ(-))=+0.03±0.17(stat)±0.05(syst) and A(CP)(Λ(b)(0)→pK(-))=+0.37±0.17(stat)±0.03(syst). In addition, we measure CP violation in B(0)→K(+)π(-) decays with 3.5σ significance, A(CP)(B(0)→K(+)π(-))=-0.086±0.023(stat)±0.009(syst), in agreement with the current world average. Measurements of branching fractions of B(s)(0)→K(+)K(-) and B(0)→π(+)π(-) decays are also updated.

Full Text