Measurement of the Inclusive Charmless Semileptonic Branching Ratio Ofbmesons and Determination Of|vub|

B Aubert,R Barate,D Boutigny,JM Gaillard,A Hicheur,Y Karyotakis, JP Lees,P Robbe,V Tisserand,A Zghiche, A Palano,A Pompili,JC Chen,ND Qi, G Rong, P Wang, YS Zhu,G Eigen,I Ofte,B Stugu,GS Abrams,AW Borgland,AB Breon,DN Brown,J Button-Shafer,RN Cahn,E Charles,CT Day,MS Gill,AV Gritsan,Y Groysman,RG Jacobsen,RW Kadel,J Kadyk,LT Kerth,YG Kolomensky,JF Kral,G Kukartsev,C LeClerc,ME Levi,G Lynch,LM Mir,PJ Oddone,TJ Orimoto,M Pripstein,NA Roe,A Romosan,MT Ronan,VG Shelkov,AV Telnov,WA Wenzel,K Ford,TJ Harrison, CM Hawkes,DJ Knowles,SE Morgan,RC Penny,AT Watson,NK Watson,T Deppermann,K Goetzen,H Koch,B Lewandowski,M Pelizaeus,K Peters,H Schmuecker,M Steinke,NR Barlow,JT Boyd,N Chevalier,WN Cottingham,MP Kelly, TE Latham,C Mackay,FF Wilson,K Abe,T Cuhadar-Donszelmann,C Hearty,TS Mattison,JA McKenna,D Thiessen,P Kyberd,AK McKemey,VE Blinov,AD Bukin,VB Golubev,VN Ivanchenko,EA Kravchenko,AP Onuchin,SI Serednyakov,YI Skovpen,EP Solodov,AN Yushkov,D Best,M Chao,D Kirkby,AJ Lankford,M Mandelkern,S McMahon,RK Mommsen, W Roethel,DP Stoker, C Buchanan,D del Re,HK Hadavand,EJ Hill,DB MacFarlane,HP Paar,S Rahatlou,U Schwanke,V Sharma,JW Berryhill,C Campagnari,B Dahmes,N Kuznetsova,SL Levy,O Long,A Lu,MA Mazur,JD Richman,W Verkerke,TW Beck,J Beringer,AM Eisner,CA Heusch,WS Lockman,T Schalk,RE Schmitz,BA Schumm,A Seiden,M Turri,W Walkowiak, DC Williams,MG Wilson,J Albert,E Chen,GP Dubois-Felsmann,A Dvoretskii,DG Hitlin,I Narsky,FC Porter,A Ryd,A Samuel,S Yang,S Jayatilleke,G Mancinelli,BT Meadows,MD Sokoloff,T Abe,T Barillari,F Blanc,P Bloom,S Chen,PJ Clark,WT Ford,U Nauenberg,A Olivas,P Rankin,J Roy,JG Smith,WC van Hoek, L Zhang,JL Harton,T Hu,A Soffer,WH Toki,RJ Wilson, J Zhang,D Altenburg,T Brandt,J Brose,T Colberg,M Dickopp,RS Dubitzky,A Hauke,HM Lacker,E Maly,R Muller-Pfefferkorn, R Nogowski,S Otto,KR Schubert, R Schwierz,B Spaan,L Wilden,D Bernard,GR Bonneaud,F Brochard,J Cohen-Tanugi,C Thiebaux,G Vasileiadis,M Verderi, A Khan,D Lavin,F Muheim,S Playfer,JE Swain,J Tinslay,M Andreotti,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Luppi,M Negrini,L Piemontese,A Sarti,E Treadwell,F Anulli,R Baldini-Ferroli, A Calcaterra,R de Sangro,D Falciai,G Finocchiaro,P Patteri,IM Peruzzi,M Piccolo,A Zallo,A Buzzo,R Contri,G Crosetti,ML Vetere,M Macri,MR Monge,S Passaggio,FC Pastore, C Patrignani,E Robutti,A Santroni,S Tosi,S Bailey,M Morii,ML Aspinwall,W Bhimji,DA Bowerman,PD Dauncey,U Egede, I Eschrich,GW Morton,JA Nash,P Sanders,GP Taylor,GJ Grenier, SJ Lee,U Mallik,J Cochran,HB Crawley,J Lamsa,WT Meyer,S Prell,EI Rosenberg,J Yi,M Davier,G Grosdidier,A Hocker,S Laplace,FL Diberder,V Lepeltier,AM Lutz,TC Petersen,S Plaszczynski,MH Schune,L Tantot, G Wormser, V Brigljevic,CH Cheng,DJ Lange,DM Wright,AJ Bevan,JP Coleman,JR Fry,E Gabathuler,R Gamet,M Kay,RJ Parry,DJ Payne,RJ Sloane,C Touramanis,JJ Back,PF Harrison,HW Shorthouse,P Strother,PB Vidal,CL Brown,G Cowan,RL Flack,HU Flaecher,S George,MG Green,A Kurup,CE Marker,TR McMahon, S Ricciardi,F Salvatore,G Vaitsas,MA Winter,D Brown,CL Davis,J Allison,RJ Barlow,AC Forti,PA Hart,F Jackson,GD Lafferty,AJ Lyon,JH Weatherall, JC Williams,A Farbin, A Jawahery,D Kovalskyi,CK Lae,V Lillard,DA Roberts,G Blaylock,C Dallapiccola, KT Flood,SS Hertzbach,R Kofler,VB Koptchev,TB Moore,S Saremi,H Staengle,S Willocq,R Cowan, G Sciolla, F Taylor,RK Yamamoto,DJJ Mangeol,M Milek,PM Patel,A Lazzaro,F Palombo,JM Bauer,L Cremaldi,V Eschenburg,R Godang,R Kroeger,J Reidy, DA Sanders,DJ Summers,HW Zhao,C Hast, P Taras,H Nicholson,C Cartaro,N Cavallo,G De Nardo,F Fabozzi,C Gatto,L Lista,P Paolucci,D Piccolo, C Sciacca,MA Baak,G Raven,JM LoSecco,TA Gabriel,B Brau,T Pulliam,J Brau,R Frey,CT Potter,NB Sinev, D Strom,E Torrence,F Colecchia,A Dorigo,F Galeazzi,M Margoni,M Morandin,M Posocco,M Rotondo,F Simonetto,R Stroili,G Tiozzo,C Voci,M Benayoun,H Briand,J Chauveau,P David,C de la Vaissiere,L Del Buono,O Hamon,MJJ John,P Leruste,J Ocariz,M Pivk,L Roos,J Stark,S T'Jampens,PF Manfredi,V Re, L Gladney,QH Guo,J Panetta, C Angelini,G Batignani,S Bettarini,M Bondioli,F Bucci, G Calderini,M Carpinelli,F Forti,MA Giorgi,A Lusiani,G Marchiori,F Martinez-Vidal,M Morganti, N Neri,E Paoloni,M Rama, G Rizzo,F Sandrelli,J Walsh,M Haire,D Judd,K Paick,DE Wagoner,N Danielson,P Elmer,C Lu,V Miftakov,J Olsen,AJS Smith,EW Varnes,F Bellini,G Cavoto,R Faccini,F Ferrarotto,F Ferroni,M Gaspero, MA Mazzoni,S Morganti,M Pierini,G Piredda,FS Tehrani,C Voena,S Christ,G Wagner,R Waldi,T Adye,N De Groot,B Franek,NI Geddes,GP Gopal,EO Olaiya,SM Xella,R Aleksan,S Emery,A Gaidot,SF Ganzhur,PF Giraud,GH de Monchenault,W Kozanecki,M Langer,GW London,B Mayer, G Schott,G Vasseur, C Yeche,M Zito,MV Purohit,AW Weidemann,FX Yumiceva,D Aston, R Bartoldus,N Berger,AM Boyarski,OL Buchmueller,MR Convery,DP Coupal,D Dong, J Dorfan,D Dujmic,W Dunwoodie,RC Field, T Glanzman,SJ Gowdy,E Grauges-Pous,T Hadig,V Halyo,T Hryn'ova,WR Innes,CP Jessop,MH Kelsey, P Kim,ML Kocian,U Langenegger,DWGS Leith,S Luitz,V Luth,HL Lynch,H Marsiske, S Menke,R Messner,DR Muller, CP O'Grady,VE Ozcan,A Perazzo,M Perl,S Petrak,BN Ratcliff,SH Robertson,A Roodman,AA Salnikov,RH Schindler,J Schwiening,G Simi,A Snyder,A Soha,J Stelzer, D Su,MK Sullivan,HA Tanaka,J Va'vra, SR Wagner,M Weaver,AJR Weinstein,WJ Wisniewski, DH Wright,CC Young, PR Burchat,AJ Edwards,TI Meyer,C Roat, S Ahmed,MS Alam,JA Ernst, M Saleem,FR Wappler,W Bugg,M Krishnamurthy,SM Spanier,R Eckmann,H Kim,JL Ritchie,RF Schwitters,JM Izen,I Kitayama,XC Lou,S Ye,F Bianchi, M Bona,F Gallo,D Gamba,C Borean,L Bosisio,GD Ricca,S Dittongo,S Grancagnolo, L Lanceri,P Poropat,L Vitale,G Vuagnin,RS Panvini,S Banerjee,CM Brown,D Fortin,PD Jackson,R Kowalewski,JM Roney,HR Band, S Dasu,M Datta,AM Eichenbaum,H Hu,JR Johnson,PE Kutter,H Li,R Liu,F Di Lodovico,A Mihalyi,AK Mohapatra,Y Pan, R Prepost,SJ Sekula,JH von Wimmersperg-Toeller,J Wu,SL Wu,Z Yu,H Neal

OSTI OAI (US Department of Energy Office of Scientific and Technical Information)（2018）

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摘要

We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 x 10(6) (-)BB events recorded with the BABAR detector at the Upsilon(4S) resonance. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other B meson. The number of signal events is extracted from the mass distribution of the hadronic system accompanying the lepton and is used to determine the ratio of branching fractions B((-)B-->X(u)lnu;)/B((-)B-->Xlnu;)=[2.06+/-0.25(stat)+/-0.23(syst)+/-0.36(theo)]x10(-2). Using the measured branching fraction for inclusive semileptonic B decays, we find B((-)B-->X(u)lnu;)=[2.24+/-0.27(stat)+/-0.26(syst)+/-0.39(theo)]x10(-3) and derive the Cabibbo-Kobayashi-Maskawa matrix element |V(ub)|=[4.62+/-0.28(stat)+/-0.27(syst)+/-0.48(theo)]x10(-3).

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Electron Inelastic Mean Free Paths

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