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Phys Rev Lett. 2001 Oct 8;87(15):151802. Epub 2001 Sep 24.

Measurement of branching fractions and search for CP-violating charge asymmetries in charmless two-body B decays into pions and kaons.

Aubert B, Boutigny D, Gaillard JM, Hicheur A, Karyotakis Y, Lees JP, Robbe P, Tisserand V, Palano A, Chen GP, Chen JC, Qi ND, Rong G, Wang P, Zhu YS, Eigen G, Reinertsen PL, Stugu B, Abbott B, Abrams GS, Borgland AW, Breon AB, Brown DN, Button-Shafer J, Cahn RN, Clark AR, Fan Q, Gill MS, Gowdy SJ, Gritsan A, Groysman Y, Jacobsen RG, Kadel RW, Kadyk J, Kerth LT, Kluth S, Kolomensky YG, Kral JF, LeClerc C, Levi ME, Liu T, Lynch G, Meyer AB, Momayezi M, Oddone PJ, Perazzo A, Pripstein M, Roe NA, Romosan A, Ronan MT, Shelkov VG, Telnov AV, Wenzel WA, Bright-Thomas PG, Harrison TJ, Hawkes CM, Kirk A, Knowles DJ, O'Neale SW, Penny RC, Watson AT, Watson NK, Deppermann T, Koch H, Krug J, Kunze M, Lewandowski B, Peters K, Schmuecker H, Steinke M, Andress JC, Barlow NR, Bhimji W, Chevalier N, Clark PJ, Cottingham WN, De Groot N, Dyce N, Foster B, Mass A, McFall JD, Wallom D, Wilson FF, Abe K, Hearty C, Mattison TS, McKenna JA, Thiessen D, Camanzi B, Jolly S, McKemey AK, Tinslay J, Blinov VE, Bukin AD, Bukin DA, Buzykaev AR, Dubrovin MS, Golubev VB, Ivanchenko VN, Korol AA, Kravchenko EA, Onuchin AP, Salnikov AA, Serednyakov SI, Skovpen YI, Telnov VI, Yushkov AN, Lankford AJ, Mandelkern M, McMahon S, Stoker DP, Ahsan A, Arisaka K, Buchanan C, Chun S, Branson JG, MacFarlane DB, Prell S, Rahatlou S, Raven G, Sharma V, Campagnari C, Dahmes B, Hart PA, Kuznetsova N, Levy SL, Long O, Lu A, Richman JD, Verkerke W, Witherell M, Yellin S, Beringer J, Dorfan DE, Eisner AM, Frey A, Grillo AA, Grothe M, Heusch CA, Johnson RP, Kroeger W, Lockman WS, Pulliam T, Sadrozinski H, Schalk T, Schmitz RE, Schumm BA, Seiden A, Turri M, Walkowiak W, Williams DC, Wilson MG, Chen E, Dubois-Felsmann GP, Dvoretskii A, Hitlin DG, Metzler S, Oyang J, Porter FC, Ryd A, Samuel A, Weaver M, Yang S, Zhu RY, Devmal S, Geld TL, Jayatilleke S, Mancinelli G, Meadows BT, Sokoloff MD, Bloom P, Fahey S, Ford WT, Gaede F, Johnson DR, Michael AK, Nauenberg U, Olivas A, Park H, Rankin P, Roy J, Sen S, Smith JG, van Hoek WC, Wagner DL, Blouw J, Harton JL, Krishnamurthy M, Soffer A, Toki WH, Wilson RJ, Zhang J, Brandt T, Brose J, Colberg T, Dahlinger G, Dickopp M, Dubitzky RS, Maly E, Müller-Pfefferkorn R, Otto S, Schubert KR, Schwierz R, Spaan B, Wilden L, Behr L, Bernard D, Bonneaud GR, Brochard F, Cohen-Tanugi J, Ferrag S, Roussot E, T'Jampens S, Thiebaux C, Vasileiadis G, Verderi M, Anjomshoaa A, Bernet R, Khan A, Muheim F, Playfer S, Swain JE, Falbo M, Bozzi C, Dittongo S, Folegani M, Piemontese L, Treadwell E, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Falciai D, Finocchiaro G, Patteri P, Peruzzi IM, Piccolo M, Xie Y, Zallo A, Bagnasco S, Buzzo A, Contri R, Crosetti G, Fabbricatore P, Farinon S, Lo Vetere M, Macri M, Monge MR, Musenich R, Pallavicini M, Parodi R, Passaggio S, Pastore FC, Patrignani C, Pia MG, Priano C, Robutti E, Santroni A, Morii M, Bartoldus R, Dignan T, Hamilton R, Mallik U, Cochran J, Crawley HB, Fischer PA, Lamsa J, Meyer WT, Rosenberg EI, Benkebil M, Grosdidier G, Hast C, Höcker A, Lacker HM, LePeltier V, Lutz AM, Plaszczynski S, Schune MH, Trincaz-Duvoid S, Valassi A, Wormser G, Bionta RM, Brigljevic V, Fackler O, Fujino D, Lange DJ, Mugge M, Shi X, van Bibber K, Wenaus TJ, Wright DM, Wuest CR, Carroll M, Fry JR, Gabathuler E, Gamet R, George M, Kay M, Payne DJ, Sloane RJ, Touramanis C, Aspinwall ML, Bowerman DA, Dauncey PD, Egede U, Eschrich I, Gunawardane NJ, Martin R, Nash JA, Sanders P, Smith D, Azzopardi DE, Back JJ, Dixon P, Harrison PF, Potter RJ, Shorthouse HW, Strother P, Vidal PB, Williams MI, Cowan G, George S, Green MG, Kurup A, Marker CE, McGrath P, McMahon TR, Ricciardi S, Salvatore F, Scott I, Vaitsas G, Brown D, Davis CL, Allison J, Barlow RJ, Boyd JT, Forti A, Fullwood J, Jackson F, Lafferty GD, Savvas N, Simopoulos ET, Weatherall JH, Farbin A, Jawahery A, Lillard V, Olsen J, Roberts DA, Schieck JR, Blaylock G, Dallapiccola C, Flood KT, Hertzbach SS, Kofler R, Lin CS, Moore TB, Staengle H, Willocq S, Wittlin J, Brau B, Cowan R, Sciolla G, Taylor F, Yamamoto RK, Britton DI, Milek M, Patel PM, Trischuk J, Lanni F, Palombo F, Bauer JM, Booke M, Cremaldi L, Eschenburg V, Kroeger R, Reidy J, Sanders DA, Summers DJ, Martin JP, Nief JY, Seitz R, Taras P, Zacek V, Nicholson H, Sutton CS, Cartaro C, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Paolucci P, Piccolo D, Sciacca C, LoSecco JM, Alsmiller JR, Gabriel TA, Handler T, Brau J, Frey R, Iwasaki M, Sinev NB, Strom D, Colecchia F, Dal Corso F, Dorigo A, Galeazzi F, Margoni M, Michelon G, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Torassa E, Voci C, Benayoun M, Briand H, Chauveau J, David P, De La Vaissière C, Del Buono L, Hamon O, Le Diberder F, Leruste P, Lory J, Roos L, Stark J, Versillé S, Manfredi PF, Re V, Speziali V, Frank ED, Gladney L, Guo QH, Panetta JH, Angelini C, Batignani G, Bettarini S, Bondioli M, Carpinelli M, Forti F, Giorgi MA, Lusiani A, Martinez-Vidal F, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Sandrelli F, Simi G, Triggiani G, Walsh J, Haire M, Judd D, Paick K, Turnbull L, Wagoner DE, Albert J, Bula C, Lu C, McDonald KT, Miftakov V, Schaffner SF, Smith AJ, Tumanov A, Varnes EW, Cavoto G, del Re D, Faccini R, Ferrarotto F, Ferroni F, Fratini K, Lamanna E, Leonardi E, Mazzoni MA, Morganti S, Pierini M, Piredda G, Safai Tehrani F, Serra M, Voena C, Christ S, Waldi R, Adye T, Franek B, Geddes NI, Gopal GP, Xella SM, Aleksan R, De Domenico G, Emery S, Gaidot A, Ganzhur SF, Giraud PF, Hamel De Monchenault G, Kozanecki W, Langer M, London GW, Mayer B, Serfass B, Vasseur G, Yeche C, Zito M, Copty N, Purohit MV, Singh H, Yumiceva FX, Adam I, Anthony PL, Aston D, Baird K, Bartelt J, Bloom E, Boyarski AM, Bulos F, Calderini G, Claus R, Convery MR, Coupal DP, Coward DH, Dorfan J, Doser M, Dunwoodie W, Field RC, Glanzman T, Godfrey GL, Grosso P, Himel T, Huffer ME, Innes WR, Jessop CP, Kelsey MH, Kim P, Kocian ML, Langenegger U, Leith DW, Luitz S, Luth V, Lynch HL, Manzin G, Marsiske H, Menke S, Messner R, Moffeit KC, Mount R, Muller DR, O'Grady CP, Petrak S, Quinn H, Ratcliff BN, Robertson SH, Rochester LS, Roodman A, Schietinger T, Schindler RH, Schwiening J, Serbo VV, Snyder A, Soha A, Spanier SM, Stahl A, Stelzer J, Su D, Sullivan MK, Talby M, Tanaka HA, Trunov A, Va'vra J, Wagner SR, Weinstein AJ, Wisniewski WJ, Young CC, Burchat PR, Cheng CH, Kirkby D, Meyer TI, Roat C, De Silva A, Henderson R, Bugg W, Cohn H, Hart E, Weidemann AW, Benninger T, Izen JM, Kitayama I, Lou XC, Turcotte M, Bianchi F, Bona M, Di Girolamo B, Gamba D, Smol A, Zanin D, Bosisio L, Della Ricca G, Lanceri L, Pompili A, Poropat P, Prest M, Vallazza E, Vuagnin G, Panvini RS, Brown CM, Kowalewski R, Roney JM, Band HR, Charles E, Dasu S, Elmer P, Hu H, Johnson JR, Liu R, Nielsen J, Orejudos W, Pan Y, Prepost R, Scott IJ, Sekula SJ, von Wimmersperg-Toeller JH, Wu SL, Yu Z, Zobering H, Kordich TM, Neal H; BABAR Collaboration.

Abstract

We present measurements, based on a sample of approximately 23x10(6) BB pairs, of the branching fractions and a search for CP-violating charge asymmetries in charmless hadronic decays of B mesons into two-body final states of kaons and pions. We find the branching fractions B(B0-->pi(+)pi(-)) = (4.1+/-1.0+/-0.7)x10(-6), B(B0-->K+pi(-)) = (16.7+/-1.6+/-1.3)x10(-6), B(B+-->K+pi(0)) = (10.8(+2.1)(-1.9)+/-1.0)x10(-6), B(B+-->K0pi(+)) = (18.2(+3.3)(-3.0)+/-2.0)x10(-6), B(B0-->K0pi(0)) = (8.2(+3.1)(-2.7)+/-1.2)x10(-6). We also report 90% confidence level upper limits for B meson decays to the pi(+)pi(0), K+K-, and K0K+ final states. In addition, charge asymmetries have been found to be consistent with zero, where the statistical precision is in the range of +/-0.10 to +/-0.18, depending on the decay mode.

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