Data di Pubblicazione:
2007
Citazione:
Search for the decay B+ -> K+ tau-/+ mu+/- / B. AUBERT, R. BARATE, D. BOUTIGNY, F. COUDERC, Y. KARYOTAKIS, J.P. LEES, V. POIREAU, V. TISSERAND, A. ZGHICHE, E. GRAUGES, A. PALANO, M. PAPPAGALLO, A. POMPILI, 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. BEST, A.B. BREON, D.N. BROWN, J. BUTTON-SHAFER, R.N. CAHN, E. CHARLES, C.T. DAY, M.S. GILL, A.V. GRITSAN, Y. GROYSMAN, R.G. JACOBSEN, R.W. KADEL, J. KADYK, L.T. KERTH, Y.G. KOLOMENSKY, G. KUKARTSEV, G. LYNCH, L.M. MIR, P.J. ODDONE, T.J. ORIMOTO, M. PRIPSTEIN, N.A. ROE, M.T. RONAN, W.A. WENZEL, M. BARRETT, K.E. FORD, T.J. HARRISON, A.J. HART, C.M. HAWKES, S.E. MORGAN, A.T. WATSON, M. FRITSCH, K. GOETZEN, T. HELD, H. KOCH, B. LEWANDOWSKI, M. PELIZAEUS, K. PETERS, T. SCHROEDER, M. STEINKE, J.T. BOYD, J.P. BURKE, N. CHEVALIER, W.N. COTTINGHAM, T. CUHADAR-DONSZELMANN, B.G. FULSOM, C. HEARTY, N.S. KNECHT, T.S. MATTISON, J.A. MCKENNA, A. KHAN, P. KYBERD, M. SALEEM, L. TEODORESCU, A.E. BLINOV, V.E. BLINOV, A.D. BUKIN, V.P. DRUZHININ, V.B. GOLUBEV, E.A. KRAVCHENKO, A.P. ONUCHIN, S.I. SEREDNYAKOV, Y.I. SKOVPEN, E.P. SOLODOV, A.N. YUSHKOV, 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, C. BUCHANAN, B.L. HARTFIEL, S.D. FOULKES, J.W. GARY, O. LONG, B.C. SHEN, K. WANG, L. ZHANG, D. DEL RE, H.K. HADAVAND, E.J. HILL, D.B. MACFARLANE, H.P. PAAR, S. RAHATLOU, V. SHARMA, J.W. BERRYHILL, C. CAMPAGNARI, A. CUNHA, B. DAHMES, T.M. HONG, M.A. MAZUR, J.D. RICHMAN, W. VERKERKE, 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, G.P. DUBOIS-FELSMANN, A. DVORETSKII, D.G. HITLIN, J.S. MINAMORA, I. NARSKY, T. PIATENKO, F.C. PORTER, A. RYD, A. SAMUEL, R. ANDREASSEN, G. MANCINELLI, B.T. MEADOWS, M.D. SOKOLOFF, F. BLANC, P.C. BLOOM, S. CHEN, W.T. FORD, J.F. HIRSCHAUER, A. KREISEL, 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, Q. ZENG, D. ALTENBURG, E. FELTRESI, A. HAUKE, B. SPAAN, T. BRANDT, J. BROSE, M. DICKOPP, V. KLOSE, H.M. LACKER, R. NOGOWSKI, S. OTTO, A. PETZOLD, J. SCHUBERT, K.R. SCHUBERT, R. SCHWIERZ, J.E. SUNDERMANN, D. BERNARD, G.R. BONNEAUD, P. GRENIER, S. SCHRENK, C. THIEBAUX, G. VASILEIADIS, M. VERDERI, D.J. BARD, P.J. CLARK, W. GRADL, F. MUHEIM, S. PLAYFER, Y. XIE, M. ANDREOTTI, D. BETTONI, C. BOZZI, R. CALABRESE, G. CIBINETTO, E. LUPPI, M. NEGRINI, L. PIEMONTESE, F. ANULLI, R. BALDINI-FERROLI, A. CALCATERRA, R. DE SANGRO, G. FINOCCHIARO, P. PATTERI, I.M. PERUZZI, M. PICCOLO, A. ZALLO, A. BUZZO, R. CAPRA, R. CONTRI, M.L. VETERE, M.M. MACRI, M.R. MONGE, S. PASSAGGIO, C. PATRIGNANI, E. ROBUTTI, A. SANTRONI, S. TOSI, G. BRANDENBURG, K.S. CHAISANGUANTHUM, M. MORII, E. WON, J. WU, R.S. DUBITZKY, U. LANGENEGGER, J. MARKS, S. SCHENK, U. UWER, W. BHIMJI, D.A. BOWERMAN, P.D. DAUNCEY, U. EGEDE, R.L. FLACK, J.R. GAILLARD, J.A. NASH, M.B. NIKOLICH, W.P. VAZQUEZ, X. CHAI, M.J. CHARLES, W.F. MADER, U. MALLIK, V. ZIEGLER, J. COCHRAN, H.B. CRAWLEY, V. EYGES, W.T. MEYER, S. PRELL, E.I. ROSENBERG, A.E. RUBIN, J.I. YI, G. SCHOTT, N. ARNAUD, M. DAVIER, X. GIROUX, G. GROSDIDIER, A. HOCKER, F.L. DIBERDER, V. LEPELTIER, A.M. LUTZ, A. OYANGUREN, T.C. PETERSEN, S. PLASZCZYNSKI, S. RODIER, P. ROUDEAU, M.H. SCHUNE, A. STOCCHI, G. WORMSER, C.H. CHENG, D.J. LANGE, M.C. SIMANI, D.M. WRIGHT, A.J. BEVAN, C.A. CHAVEZ, I.J. FORSTER, J.R. FRY, E. GABATHULER, R. GAMET, K.A. GEORGE, D.E. HUTCHCROFT, R.J. PARRY, D.J. PAYNE, K.C. SCHOFIELD, C. TOURAMANIS, C.M. CORMACK, F.D. LODOVICO, W. MENGES, R. SACCO, C.L. BROWN, G. COWAN, H.U. FLAECHER, M.G. GREEN, D.A. HOPKINS, P.S. JACKSON, T.R. MCMAHON, S. RICCIARDI, F. SALVATORE, D.N. BROWN, C.L. DAVIS, J. ALLISON, N.R. BARLOW, R.J. BARLOW, C.L. EDGAR, M.C. HODGKINSON, M.P. KELLY, G.D. LAFFERTY, M.T. NAISBIT, J
Abstract:
We present a search for the lepton flavor violating decay B+ --> K+ tau-/+ mu+/- using 383 million B Bbar events collected by the BABAR experiment. The branching fraction for this decay can be substantially enhanced in new physics models. The kinematics of the tau from the signal B decay are inferred from the K+, mu, and other B in the event, which is fully reconstructed in one of a variety of hadronic decay modes, allowing the signal B candidate to be fully reconstructed. We observe no excess of events over the expected background and set a limit of B(B+ --> K+ tau mu) < 7.7 x 10^-5 at 90% confidence level, where the branching fraction is for the sum of the K+ tau- mu+ and K+ tau+ mu- final states. We use this result to improve a model-independent bound on the energy scale of flavor-changing new physics.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Lepton flavor violation
Elenco autori:
B. AUBERT, R. BARATE, D. BOUTIGNY, F. COUDERC, Y. KARYOTAKIS, J.P. LEES, V. POIREAU, V. TISSERAND, A. ZGHICHE, E. GRAUGES, A. PALANO, M. PAPPAGALLO, A. POMPILI, 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. BEST, A.B. BREON, D.N. BROWN, J. BUTTON-SHAFER, R.N. CAHN, E. CHARLES, C.T. DAY, M.S. GILL, A.V. GRITSAN, Y. GROYSMAN, R.G. JACOBSEN, R.W. KADEL, J. KADYK, L.T. KERTH, Y.G. KOLOMENSKY, G. KUKARTSEV, G. LYNCH, L.M. MIR, P.J. ODDONE, T.J. ORIMOTO, M. PRIPSTEIN, N.A. ROE, M.T. RONAN, W.A. WENZEL, M. BARRETT, K.E. FORD, T.J. HARRISON, A.J. HART, C.M. HAWKES, S.E. MORGAN, A.T. WATSON, M. FRITSCH, K. GOETZEN, T. HELD, H. KOCH, B. LEWANDOWSKI, M. PELIZAEUS, K. PETERS, T. SCHROEDER, M. STEINKE, J.T. BOYD, J.P. BURKE, N. CHEVALIER, W.N. COTTINGHAM, T. CUHADAR-DONSZELMANN, B.G. FULSOM, C. HEARTY, N.S. KNECHT, T.S. MATTISON, J.A. MCKENNA, A. KHAN, P. KYBERD, M. SALEEM, L. TEODORESCU, A.E. BLINOV, V.E. BLINOV, A.D. BUKIN, V.P. DRUZHININ, V.B. GOLUBEV, E.A. KRAVCHENKO, A.P. ONUCHIN, S.I. SEREDNYAKOV, Y.I. SKOVPEN, E.P. SOLODOV, A.N. YUSHKOV, 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, C. BUCHANAN, B.L. HARTFIEL, S.D. FOULKES, J.W. GARY, O. LONG, B.C. SHEN, K. WANG, L. ZHANG, D. DEL RE, H.K. HADAVAND, E.J. HILL, D.B. MACFARLANE, H.P. PAAR, S. RAHATLOU, V. SHARMA, J.W. BERRYHILL, C. CAMPAGNARI, A. CUNHA, B. DAHMES, T.M. HONG, M.A. MAZUR, J.D. RICHMAN, W. VERKERKE, 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, G.P. DUBOIS-FELSMANN, A. DVORETSKII, D.G. HITLIN, J.S. MINAMORA, I. NARSKY, T. PIATENKO, F.C. PORTER, A. RYD, A. SAMUEL, R. ANDREASSEN, G. MANCINELLI, B.T. MEADOWS, M.D. SOKOLOFF, F. BLANC, P.C. BLOOM, S. CHEN, W.T. FORD, J.F. HIRSCHAUER, A. KREISEL, 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, Q. ZENG, D. ALTENBURG, E. FELTRESI, A. HAUKE, B. SPAAN, T. BRANDT, J. BROSE, M. DICKOPP, V. KLOSE, H.M. LACKER, R. NOGOWSKI, S. OTTO, A. PETZOLD, J. SCHUBERT, K.R. SCHUBERT, R. SCHWIERZ, J.E. SUNDERMANN, D. BERNARD, G.R. BONNEAUD, P. GRENIER, S. SCHRENK, C. THIEBAUX, G. VASILEIADIS, M. VERDERI, D.J. BARD, P.J. CLARK, W. GRADL, F. MUHEIM, S. PLAYFER, Y. XIE, M. ANDREOTTI, D. BETTONI, C. BOZZI, R. CALABRESE, G. CIBINETTO, E. LUPPI, M. NEGRINI, L. PIEMONTESE, F. ANULLI, R. BALDINI-FERROLI, A. CALCATERRA, R. DE SANGRO, G. FINOCCHIARO, P. PATTERI, I.M. PERUZZI, M. PICCOLO, A. ZALLO, A. BUZZO, R. CAPRA, R. CONTRI, M.L. VETERE, M.M. MACRI, M.R. MONGE, S. PASSAGGIO, C. PATRIGNANI, E. ROBUTTI, A. SANTRONI, S. TOSI, G. BRANDENBURG, K.S. CHAISANGUANTHUM, M. MORII, E. WON, J. WU, R.S. DUBITZKY, U. LANGENEGGER, J. MARKS, S. SCHENK, U. UWER, W. BHIMJI, D.A. BOWERMAN, P.D. DAUNCEY, U. EGEDE, R.L. FLACK, J.R. GAILLARD, J.A. NASH, M.B. NIKOLICH, W.P. VAZQUEZ, X. CHAI, M.J. CHARLES, W.F. MADER, U. MALLIK, V. ZIEGLER, J. COCHRAN, H.B. CRAWLEY, V. EYGES, W.T. MEYER, S. PRELL, E.I. ROSENBERG, A.E. RUBIN, J.I. YI, G. SCHOTT, N. ARNAUD, M. DAVIER, X. GIROUX, G. GROSDIDIER, A. HOCKER, F.L. DIBERDER, V. LEPELTIER, A.M. LUTZ, A. OYANGUREN, T.C. PETERSEN, S. PLASZCZYNSKI, S. RODIER, P. ROUDEAU, M.H. SCHUNE, A. STOCCHI, G. WORMSER, C.H. CHENG, D.J. LANGE, M.C. SIMANI, D.M. WRIGHT, A.J. BEVAN, C.A. CHAVEZ, I.J. FORSTER, J.R. FRY, E. GABATHULER, R. GAMET, K.A. GEORGE, D.E. HUTCHCROFT, R.J. PARRY, D.J. PAYNE, K.C. SCHOFIELD, C. TOURAMANIS, C.M. CORMACK, F.D. LODOVICO, W. MENGES, R. SACCO, C.L. BROWN, G. COWAN, H.U. FLAECHER, M.G. GREEN, D.A. HOPKINS, P.S. JACKSON, T.R. MCMAHON, S. RICCIARDI, F. SALVATORE, D.N. BROWN, C.L. DAVIS, J. ALLISON, N.R. BARLOW, R.J. BARLOW, C.L. EDGAR, M.C. HODGKINSON, M.P. KELLY, G.D. LAFFERTY, M.T. NAISBIT, J.C. WILLIAMS, C. CHEN, W.D. HULSBERGEN, A. JA
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