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Measurements of direct CP violating asymmetries in charmless decays of strange bottom mesons and bottom baryons.

T T Aaltonen, B B Alvarez González, S S Amerio, D D Amidei, A A Anastassov, A A Annovi, J J Antos, G G Apollinari, J A JA Appel, A A Apresyan, T T Arisawa, A A Artikov, J J Asaadi, W W Ashmanskas, B B Auerbach, A A Aurisano, F F Azfar, W W Badgett, A A Barbaro-Galtieri, V E VE Barnes, B A BA Barnett, P P Barria, P P Bartos, M M Bauce, G G Bauer, F F Bedeschi, D D Beecher, S S Behari, G G Bellettini, J J Bellinger, D D Benjamin, A A Beretvas, A A Bhatti, M M Binkley, D D Bisello, I I Bizjak, K R KR Bland, B B Blumenfeld, A A Bocci, A A Bodek, D D Bortoletto, J J Boudreau, A A Boveia, B B Brau, L L Brigliadori, A A Brisuda, C C Bromberg, E E Brucken, M M Bucciantonio, J J Budagov, H S HS Budd, S S Budd, K K Burkett, G G Busetto, P P Bussey, A A Buzatu, C C Calancha, S S Camarda, M M Campanelli, M M Campbell, F F Canelli, A A Canepa, B B Carls, D D Carlsmith, R R Carosi, S S Carrillo, S S Carron, B B Casal, M M Casarsa, A A Castro, P P Catastini, D D Cauz, V V Cavaliere, M M Cavalli-Sforza, A A Cerri, L L Cerrito, Y C YC Chen, M M Chertok, G G Chiarelli, G G Chlachidze, F F Chlebana, K K Cho, D D Chokheli, J P JP Chou, W H WH Chung, Y S YS Chung, C I CI Ciobanu, M A MA Ciocci, A A Clark, G G Compostella, M E ME Convery, J J Conway, M M Corbo, M M Cordelli, C A CA Cox, D J DJ Cox, F F Crescioli, C C Cuenca Almenar, J J Cuevas, R R Culbertson, D D Dagenhart, N N d'Ascenzo, M M Datta, P P de Barbaro, S S De Cecco, G G De Lorenzo, M M Dell'orso, C C Deluca, L L Demortier, J J Deng, M M Deninno, F F Devoto, M M d'Errico, A A Di Canto, B B Di Ruzza, J R JR Dittmann, M M D'Onofrio, S S Donati, P P Dong, M M Dorigo, T T Dorigo, K K Ebina, A A Elagin, A A Eppig, R R Erbacher, D D Errede, S S Errede, N N Ershaidat, R R Eusebi, H C HC Fang, S S Farrington, M M Feindt, J P JP Fernandez, C C Ferrazza, R R Field, G G Flanagan, R R Forrest, M J MJ Frank, M M Franklin, J C JC Freeman, Y Y Funakoshi, I I Furic, M M Gallinaro, J J Galyardt, J E JE Garcia, A F AF Garfinkel, P P Garosi, H H Gerberich, E E Gerchtein, S S Giagu, V V Giakoumopoulou, P P Giannetti, K K Gibson, C M CM Ginsburg, N N Giokaris, P P Giromini, M M Giunta, G G Giurgiu, V V Glagolev, D D Glenzinski, M M Gold, D D Goldin, N N Goldschmidt, A A Golossanov, G G Gomez, G G Gomez-Ceballos, M M Goncharov, O O González, I I Gorelov, A T AT Goshaw, K K Goulianos, A A Gresele, S S Grinstein, C C Grosso-Pilcher, R C RC Group, J J Guimaraes da Costa, Z Z Gunay-Unalan, C C Haber, S R SR Hahn, E E Halkiadakis, A A Hamaguchi, J Y JY Han, F F Happacher, K K Hara, D D Hare, M M Hare, R F RF Harr, K K Hatakeyama, C C Hays, M M Heck, J J Heinrich, M M Herndon, S S Hewamanage, D D Hidas, A A Hocker, W W Hopkins, D D Horn, S S Hou, R E RE Hughes, M M Hurwitz, U U Husemann, N N Hussain, M M Hussein, J J Huston, G G Introzzi, M M Iori, A A Ivanov, E E James, D D Jang, B B Jayatilaka, E J EJ Jeon, M K MK Jha, S S Jindariani, W W Johnson, M M Jones, K K KK Joo, S Y SY Jun, T R TR Junk, T T Kamon, P E PE Karchin, Y Y Kato, W W Ketchum, J J Keung, V V Khotilovich, B B Kilminster, D H DH Kim, H S HS Kim, H W HW Kim, J E JE Kim, M J MJ Kim, S B SB Kim, S H SH Kim, Y K YK Kim, N N Kimura, M M Kirby, S S Klimenko, K K Kondo, D J DJ Kong, J J Konigsberg, A V AV Kotwal, M M Kreps, J J Kroll, D D Krop, N N Krumnack, M M Kruse, V V Krutelyov, T T Kuhr, M M Kurata, S S Kwang, A T AT Laasanen, S S Lami, S S Lammel, M M Lancaster, R L RL Lander, K K Lannon, A A Lath, G G Latino, I I Lazzizzera, T T Lecompte, E E Lee, H S HS Lee, J S JS Lee, S W SW Lee, S S Leo, S S Leone, J D JD Lewis, C-J CJ Lin, J J Linacre, M M Lindgren, E E Lipeles, A A Lister, D O DO Litvintsev, C C Liu, Q Q Liu, T T Liu, S S Lockwitz, N S NS Lockyer, A A Loginov, D D Lucchesi, J J Lueck, P P Lujan, P P Lukens, G G Lungu, J J Lys, R R Lysak, R R Madrak, K K Maeshima, K K Makhoul, P P Maksimovic, S S Malik, G G Manca, A A Manousakis-Katsikakis, F F Margaroli, C C Marino, M M Martínez, R R Martínez-Ballarín, P P Mastrandrea, M M Mathis, M E ME Mattson, P P Mazzanti, K S KS McFarland, P P McIntyre, R R McNulty, A A Mehta, P P Mehtala, A A Menzione, C C Mesropian, T T Miao, D D Mietlicki, A A Mitra, H H Miyake, S S Moed, N N Moggi, M N MN Mondragon, C S CS Moon, R R Moore, M J MJ Morello, J J Morlock, P P Movilla Fernandez, A A Mukherjee, Th T Muller, P P Murat, M M Mussini, J J Nachtman, Y Y Nagai, J J Naganoma, I I Nakano, A A Napier, J J Nett, C C Neu, M S MS Neubauer, J J Nielsen, L L Nodulman, O O Norniella, E E Nurse, L L Oakes, S H SH Oh, Y D YD Oh, I I Oksuzian, T T Okusawa, R R Orava, L L Ortolan, S S Pagan Griso, C C Pagliarone, E E Palencia, V V Papadimitriou, A A AA Paramonov, J J Patrick, G G Pauletta, M M Paulini, C C Paus, D E DE Pellett, A A Penzo, T J TJ Phillips, G G Piacentino, E E Pianori, J J Pilot, K K Pitts, C C Plager, L L Pondrom, K K Potamianos, O O Poukhov, F F Prokoshin, A A Pronko, F F Ptohos, E E Pueschel, G G Punzi, J J Pursley, A A Rahaman, V V Ramakrishnan, N N Ranjan, I I Redondo, P P Renton, M M Rescigno, F F Rimondi, L L Ristori, A A Robson, T T Rodrigo, T T Rodriguez, E E Rogers, S S Rolli, R R Roser, M M Rossi, F F Rubbo, F F Ruffini, A A Ruiz, J J Russ, V V Rusu, A A Safonov, W K WK Sakumoto, Y Y Sakurai, L L Santi, L L Sartori, K K Sato, V V Saveliev, A A Savoy-Navarro, P P Schlabach, A A Schmidt, E E EE Schmidt, M P MP Schmidt, M M Schmitt, T T Schwarz, L L Scodellaro, A A Scribano, F F Scuri, A A Sedov, S S Seidel, Y Y Seiya, A A Semenov, F F Sforza, A A Sfyrla, S Z SZ Shalhout, T T Shears, P F PF Shepard, M M Shimojima, S S Shiraishi, M M Shochet, I I Shreyber, A A Simonenko, P P Sinervo, A A Sissakian, K K Sliwa, J R JR Smith, F D FD Snider, A A Soha, S S Somalwar, V V Sorin, P P Squillacioti, M M Stancari, M M Stanitzki, R R St Denis, B B Stelzer, O O Stelzer-Chilton, D D Stentz, J J Strologas, G L GL Strycker, Y Y Sudo, A A Sukhanov, I I Suslov, K K Takemasa, Y Y Takeuchi, J J Tang, M M Tecchio, P K PK Teng, J J Thom, J J Thome, G A GA Thompson, E E Thomson, P P Ttito-Guzmán, S S Tkaczyk, D D Toback, S S Tokar, K K Tollefson, T T Tomura, D D Tonelli, S S Torre, D D Torretta, P P Totaro, M M Trovato, Y Y Tu, F F Ukegawa, S S Uozumi, A A Varganov, F F Vázquez, G G Velev, C C Vellidis, M M Vidal, I I Vila, R R Vilar, J J Vizán, M M Vogel, G G Volpi, P P Wagner, R L RL Wagner, T T Wakisaka, R R Wallny, S M SM Wang, A A Warburton, D D Waters, M M Weinberger, W C WC Wester, B B Whitehouse, D D Whiteson, A B AB Wicklund, E E Wicklund, S S Wilbur, F F Wick, H H HH Williams, J S JS Wilson, P P Wilson, B L BL Winer, P P Wittich, S S Wolbers, H H Wolfe, T T Wright, X X Wu, Z Z Wu, K K Yamamoto, J J Yamaoka, T T Yang, U K UK Yang, Y C YC Yang, W-M WM Yao, G P GP Yeh, K K Yi, J J Yoh, K K Yorita, T T Yoshida, G B GB Yu, I I Yu, S S SS Yu, J C JC Yun, A A Zanetti, Y Y Zeng, S S Zucchelli, and

Phys Rev Lett 106(18):181802 (2011) PMID 21635084

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.

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