We report observations of the b -> d penguin-dominated decays B+-> Kbar K0(+) and B0 -> K0(K0bar) in 316 fb(-1) of e(+)e(-) collision data collected with the BABAR detector. We measure the branching fractions B(B+->Kbar K0(+))=(1.61 +/- 0.44 +/- 0.09)x10^(-6) and B(B0 -> K0(K0bar)=(1.08 +/- 0.28 +/- 0.11)x10^(-6) and the CP-violating charge asymmetry A_CP(K0bar K-0(+))=0.10 +/- 0.26 +/- 0.03. Using a vertexing technique previously employed in several analyses of all-neutral final states containing kaons, we report the first measurement of time-dependent CP-violating asymmetries in B0 ->(KS KS0)-K0, obtaining S=-1.28(-0.73-0.16)(+0.80+0.11) and C=-0.40 +/- 0.41 +/- 0.06. We also report improved measurements of the branching fraction B(B+-> K0 pi+)=(23.9 +/- 1.1 +/- 1.0)x10^(-6) and CP-violating charge asymmetry A_CP(K0 pi+)=-0.029 +/- 0.039 +/- 0.010.
Observation of B+ -> K0bar K+ and B0 -> K0 K0bar / B. AUBERT, M. BONA, D. BOUTIGNY, F. COUDERC, Y. KARYOTAKIS, J.P. LEES, V. POIREAU, V. TISSERAND, A. ZGHICHE, E. GRAUGES, A. PALANO, J.C. CHEN, N.D. QI, G. RONG, P. WANG, Y.S. ZHU, G. EIGEN, I. OFTE, B. STUGU, G.S. ABRAMS, M. BATTAGLIA, D.N. BROWN, J. BUTTON-SHAFER, R.N. CAHN, E. CHARLES, M.S. GILL, Y. GROYSMAN, R.G. JACOBSEN, J.A. KADYK, L.T. KERTH, Y.G. KOLOMENSKY, G. KUKARTSEV, G. LYNCH, L.M. MIR, T.J. ORIMOTO, M. PRIPSTEIN, N.A. ROE, M.T. RONAN, W.A. WENZEL, P.D. SANCHEZ, M. BARRETT, K.E. FORD, T.J. HARRISON, A.J. HART, C.M. HAWKES, A.T. WATSON, T. HELD, H. KOCH, B. LEWANDOWSKI, M. PELIZAEUS, K. PETERS, T. SCHROEDER, M. STEINKE, J.T. BOYD, J.P. BURKE, W.N. COTTINGHAM, D. WALKER, D.J. ASGEIRSSON, T. CUHADAR-DONSZELMANN, B.G. FULSOM, C. HEARTY, N.S. KNECHT, T.S. MATTISON, J.A. MCKENNA, A. KHAN, P. KYBERD, M. SALEEM, D.J. SHERWOOD, L. TEODORESCU, V.E. BLINOV, A.D. BUKIN, V.P. DRUZHININ, V.B. GOLUBEV, A.P. ONUCHIN, S.I. SEREDNYAKOV, Y.I. SKOVPEN, E.P. SOLODOV, K.Y. TODYSHEV, M. BONDIOLI, M. BRUINSMA, M. CHAO, S. CURRY, I. ESCHRICH, D. KIRKBY, A.J. LANKFORD, P. LUND, M. MANDELKERN, R.K. MOMMSEN, W. ROETHEL, D.P. STOKER, S. ABACHI, C. BUCHANAN, S.D. FOULKES, J.W. GARY, O. LONG, B.C. SHEN, K. WANG, L. ZHANG, H.K. HADAVAND, E.J. HILL, H.P. PAAR, S. RAHATLOU, V. SHARMA, J.W. BERRYHILL, C. CAMPAGNARI, A. CUNHA, B. DAHMES, T.M. HONG, D. KOVALSKYI, J.D. RICHMAN, T.W. BECK, A.M. EISNER, C.J. FLACCO, C.A. HEUSCH, J. KROSEBERG, W.S. LOCKMAN, G. NESOM, T. SCHALK, B.A. SCHUMM, A. SEIDEN, P. SPRADLIN, D.C. WILLIAMS, M.G. WILSON, J. ALBERT, E. CHEN, A. DVORETSKII, F. FANG, D.G. HITLIN, I. NARSKY, T. PIATENKO, F.C. PORTER, A. RYD, G. MANCINELLI, B.T. MEADOWS, K. MISHRA, M.D. SOKOLOFF, F. BLANC, P.C. BLOOM, S. CHEN, W.T. FORD, J.F. HIRSCHAUER, A. KREISEL, M. NAGEL, U. NAUENBERG, A. OLIVAS, W.O. RUDDICK, J.G. SMITH, K.A. ULMER, S.R. WAGNER, J. ZHANG, A. CHEN, E.A. ECKHART, A. SOFFER, W.H. TOKI, R.J. WILSON, F. WINKLMEIER, Q. ZENG, D.D. ALTENBURG, E. FELTRESI, A. HAUKE, H. JASPER, J. MERKEL, A. PETZOLD, B. SPAAN, T. BRANDT, V. KLOSE, H.M. LACKER, W.F. MADER, R. NOGOWSKI, J. SCHUBERT, K.R. SCHUBERT, R. SCHWIERZ, J.E. SUNDERMANN, A. VOLK, D. BERNARD, G.R. BONNEAUD, E. LATOUR, C. THIEBAUX, M. VERDERI, P.J. CLARK, W. GRADL, F. MUHEIM, S. PLAYFER, A.I. ROBERTSON, Y. XIE, M. ANDREOTTI, D. BETTONI, C. BOZZI, R. CALABRESE, G. CIBINETTO, E. LUPPI, M. NEGRINI, A. PETRELLA, L. PIEMONTESE, E. PRENCIPE, F. ANULLI, R. BALDINI-FERROLI, A. CALCATERRA, R. DE SANGRO, G. FINOCCHIARO, S. PACETTI, P. PATTERI, I.M. PERUZZI, M. PICCOLO, M. RAMA, A. ZALLO, A. BUZZO, R. CONTRI, M. LO VETERE, M.M. MACRI, M.R. MONGE, S. PASSAGGIO, C. PATRIGNANI, E. ROBUTTI, A. SANTRONI, S. TOSI, G. BRANDENBURG, K.S. CHAISANGUANTHUM, M. MORII, J. WU, R.S. DUBITZKY, J. MARKS, S. SCHENK, U. UWER, D.J. BARD, W. BHIMJI, D.A. BOWERMAN, P.D. DAUNCEY, U. EGEDE, R.L. FLACK, J.A. NASH, M.B. NIKOLICH, W.P. VAZQUEZ, P.K. BEHERA, X. CHAI, M.J. CHARLES, U. MALLIK, N.T. MEYER, V. ZIEGLER, J. COCHRAN, H.B. CRAWLEY, L. DONG, V. EYGES, W.T. MEYER, S. PRELL, E.I. ROSENBERG, A.E. RUBIN, A.V. GRITSAN, A.G. DENIG, M. FRITSCH, G. SCHOTT, N. ARNAUD, M. DAVIER, G. GROSDIDIER, A. HOCKER, F. LE DIBERDER, V. LEPELTIER, A.M. LUTZ, A. OYANGUREN, S. PRUVOT, S. RODIER, P. ROUDEAU, M.H. SCHUNE, A. STOCCHI, W.F. WANG, G. WORMSER, C.H. CHENG, D.J. LANGE, D.M. WRIGHT, C.A. CHAVEZ, I.J. FORSTER, J.R. FRY, E. GABATHULER, R. GAMET, K.A. GEORGE, D.E. HUTCHCROFT, D.J. PAYNE, K.C. SCHOFIELD, C. TOURAMANIS, A.J. BEVAN, F. DI LODOVICO, W. MENGES, R. SACCO, G. COWAN, H.U. FLAECHER, D.A. HOPKINS, P.S. JACKSON, T.R. MCMAHON, S. RICCIARDI, F. SALVATORE, A.C. WREN, D.N. BROWN, C.L. DAVIS, J. ALLISON, N.R. BARLOW, R.J. BARLOW, Y.M. CHIA, C.L. EDGAR, G.D. LAFFERTY, M.T. NAISBIT, J.C. WILLIAMS, J.I. YI, C. CHEN, W.D. HULSBERGEN, A. JAWAHERY, C.K. LAE, D.A. ROBERTS, G. SIMI, G. BLAYLOCK, C. DALLAPICCOLA, S.S. HERTZBACH, X. LI, T.B. MOORE, S. SAREMI, H. STAENGLE, R. COWAN, G. SCIOLLA, S.J. SEKULA, M. SPITZNAGEL, F. TAYLOR, R.K. YAMAMOTO, H. KIM, S.E. MCLACHLIN, P.M. PATEL, S.H. ROBERTSON, A. LAZZARO, V. LOMBARDO, F. PALOMBO, J.M. BAUER, L. CREMALDI, V. ESCHENBURG, R. GODANG, R. KROEGER, D.A. SANDERS, D.J. SUMMERS, H.W. ZHAO, S. BRUNET, D. COTE, M. SIMARD, P. TARAS, F.B. VIAUD, H. NICHOLSON, N. CAVALLO, G. DE NARDO, F. FABOZZI, C. GATTO, L. LISTA, D. MONORCHIO, P. PAOLUCCI, D. PICCOLO, C. SCIACCA, M.A. BAAK, G. RAVEN, H.L. SNOEK, C.P. JESSOP, J.M. LOSECCO, T. ALLMENDINGER, G. BENELLI, L.A. CORWIN, K.K. GAN, K. HONSCHEID, D. HUFNAGEL, P.D. JACKSON, H. KAGAN, R. KASS, A.M. RAHIMI, J.J. REGENSBURGER, R. TER-ANTONYAN, Q.K. WONG, N.L. BLOUNT, J. BRAU, R. FREY, O. IGONKINA, J.A. KOLB, M. LU, R. RAHMAT, N.B. SINEV, D. STROM, J. STRUBE, E. TORRENCE, A. GAZ, M. MARGONI, M. MORANDIN, A. POMPILI, M. POSOCCO, M. ROTONDO, F. SIMONETTO, R. STROILI, C. VOCI, M. BENAYOUN, H. BRIAND, J. CHAUVEAU, P. DAVID, L. DEL BUONO, C. DE LA VAISSIERE, O. HAMON, B.L. HARTFIEL, P. LERUSTE, J. MALCLES, J. OCARIZ, L. ROOS, G. THERIN, L. GLADNEY, M. BIASINI, R. COVARELLI, C. ANGELINI, G. BATIGNANI, S. BETTARINI, F. BUCCI, G. CALDERINI, M. CARPINELLI, R. CENCI, F. FORTI, M.A. GIORGI, A. LUSIANI, G. MARCHIORI, M.A. MAZUR, M. MORGANTI, N. NERI, E. PAOLONI, G. RIZZO, J.J. WALSH, M. HAIRE, D. JUDD, D.E. WAGONER, J. BIESIADA, N. DANIELSON, P. ELMER, Y.P. LAU, C. LU, J. OLSEN, A.J.S. SMITH, A.V. TELNOV, F. BELLINI, G. CAVOTO, A. D'ORAZIO, D. DEL RE, E. DI MARCO, R. FACCINI, F. FERRAROTTO, F. FERRONI, M. GASPERO, L.L. GIOI, M.A. MAZZONI, S. MORGANTI, G. PIREDDA, F. POLCI, F.S. TEHRANI, C. VOENA, M. EBERT, H. SCHRODER, R. WALDI, T. ADYE, N. DE GROOT, B. FRANEK, E.O. OLAIYA, F.F. WILSON, R. ALEKSAN, S. EMERY, A. GAIDOT, S.F. GANZHUR, G.H. DE MONCHENAULT, W. KOZANECKI, M. LEGENDRE, G. VASSEUR, C. YECHE, M. ZITO, X.R. CHEN, H. LIU, W. PARK, M.V. PUROHIT, J.R. WILSON, M.T. ALLEN, D. ASTON, R. BARTOLDUS, P. BECHTLE, N. BERGER, R. CLAUS, J.P. COLEMAN, M.R. CONVERY, M. CRISTINZIANI, J.C. DINGFELDER, J. DORFAN, G.P. DUBOIS-FELSMANN, D. DUJMIC, W. DUNWOODIE, R.C. FIELD, T. GLANZMAN, S.J. GOWDY, M.T. GRAHAM, P. GRENIER, V. HALYO, C. HAST, T. HRYN'OVA, W.R. INNES, M.H. KELSEY, P. KIM, D.W.G.S. LEITH, S. LI, S. LUITZ, V. LUTH, H.L. LYNCH, D.B. MACFARLANE, H. MARSISKE, R. MESSNER, D.R. MULLER, C.P. O'GRADY, V.E. OZCAN, A. PERAZZO, M. PERL, T. PULLIAM, B.N. RATCLIFF, A. ROODMAN, A.A. SALNIKOV, R.H. SCHINDLER, J. SCHWIENING, A. SNYDER, J. STELZER, D. SU, M.K. SULLIVAN, K. SUZUKI, S.K. SWAIN, J.M. THOMPSON, J. VA'VRA, N. BAKEL, M. WEAVER, A.J.R. WEINSTEIN, W.J. WISNIEWSKI, M. WITTGEN, D.H. WRIGHT, A.K. YARRITU, K. YI, C.C. YOUNG, P.R. BURCHAT, A.J. EDWARDS, S.A. MAJEWSKI, B.A. PETERSEN, C. ROAT, L. WILDEN, S. AHMED, M.S. ALAM, R. BULA, J.A. ERNST, V. JAIN, B. PAN, M.A. SAEED, F.R. WAPPLER, S.B. ZAIN, W. BUGG, M. KRISHNAMURTHY, S.M. SPANIER, R. ECKMANN, J.L. RITCHIE, A. SATPATHY, C.J. SCHILLING, R.F. SCHWITTERS, J.M. IZEN, X.C. LOU, S. YE, F. BIANCHI, F. GALLO, D. GAMBA, M. BOMBEN, L. BOSISIO, C. CARTARO, F. COSSUTTI, G. DELLA RICCA, S. DITTONGO, L. LANCERI, L. VITALE, V. AZZOLINI, N. LOPEZ-MARCH, F. MARTINEZ-VIDAL, S. BANERJEE, B. BHUYAN, C.M. BROWN, D. FORTIN, K. HAMANO, R. KOWALEWSKI, I.M. NUGENT, J.M. RONEY, R.J. SOBIE, J.J. BACK, P.F. HARRISON, T.E. LATHAM, G.B. MOHANTY, M. PAPPAGALLO, H.R. BAND, X. CHEN, B. CHENG, S. DASU, M. DATTA, K.T. FLOOD, J.J. HOLLAR, P.E. KUTTER, B. MELLADO, A. MIHALYI, Y. PAN, M. PIERINI, R. PREPOST, S.L. WU, Z. YU, H. NEAL. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 97:17(2006), pp. 171805.171805-1-171805.171805-7. [10.1103/PhysRevLett.97.171805]
Observation of B+ -> K0bar K+ and B0 -> K0 K0bar
A. Lazzaro;V. Lombardo;F. Palombo;N. Neri;
2006
Abstract
We report observations of the b -> d penguin-dominated decays B+-> Kbar K0(+) and B0 -> K0(K0bar) in 316 fb(-1) of e(+)e(-) collision data collected with the BABAR detector. We measure the branching fractions B(B+->Kbar K0(+))=(1.61 +/- 0.44 +/- 0.09)x10^(-6) and B(B0 -> K0(K0bar)=(1.08 +/- 0.28 +/- 0.11)x10^(-6) and the CP-violating charge asymmetry A_CP(K0bar K-0(+))=0.10 +/- 0.26 +/- 0.03. Using a vertexing technique previously employed in several analyses of all-neutral final states containing kaons, we report the first measurement of time-dependent CP-violating asymmetries in B0 ->(KS KS0)-K0, obtaining S=-1.28(-0.73-0.16)(+0.80+0.11) and C=-0.40 +/- 0.41 +/- 0.06. We also report improved measurements of the branching fraction B(B+-> K0 pi+)=(23.9 +/- 1.1 +/- 1.0)x10^(-6) and CP-violating charge asymmetry A_CP(K0 pi+)=-0.029 +/- 0.039 +/- 0.010.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.