测量Γ(4S)→B0B0的分支比。
Measurement of the branching fraction of Gamma(4S) --> B0B0.
作者信息
Aubert B, Barate R, Boutigny D, Couderc F, Karyotakis Y, Lees J P, Poireau V, Tisserand V, Zghiche A, Grauges-Pous E, Palano A, Pappagallo M, Pompili A, Chen J C, Qi N D, Rong G, Wang P, Zhu Y S, Eigen G, Ofte I, Stugu B, Abrams G S, Borgland A W, Breon A B, Brown D N, Button-Shafer J, Cahn R N, Charles E, Day C T, Gill M S, Gritsan A V, Groysman Y, Jacobsen R G, Kadel R W, Kadyk J, Kerth L T, Kolomensky Yu G, Kukartsev G, Lynch G, Mir L M, Oddone P J, Orimoto T J, Pripstein M, Roe N A, Ronan M T, Wenzel W A, Barrett M, Ford K E, Harrison T J, Hart A J, Hawkes C M, Morgan S E, Watson A T, Fritsch M, Goetzen K, Held T, Koch H, Lewandowski B, Pelizaeus M, Peters K, Schroeder T, Steinke M, Boyd J T, Burke J P, Chevalier N, Cottingham W N, Kelly M P, Cuhadar-Donszelmann T, Hearty C, Knecht N S, Mattison T S, McKenna J A, Thiessen D, Khan A, Kyberd P, Teodorescu L, Blinov A E, Blinov V E, Bukin A D, Druzhinin V P, Golubev V B, Ivanchenko V N, Kravchenko E A, Onuchin A P, Serednyakov S I, Skovpen Yu I, Solodov E P, Yushkov A N, Best D, Bondioli M, Bruinsma M, Chao M, Eschrich I, Kirkby D, Lankford A J, Mandelkern M, Mommsen R K, Roethel W, Stoker D P, Buchanan C, Hartfiel B L, Weinstein A J R, Foulkes S D, Gary J W, Long O, Shen B C, Wang K, Zhang L, Del Re D, Hadavand H K, Hill E J, MacFarlane D B, Paar H P, Rahatlou Sh, Sharma V, Berryhill J W, Campagnari C, Cunha A, Dahmes B, Hong T M, Lu A, Mazur M A, Richman J D, Verkerke W, Beck T W, Eisner A M, Flacco C J, Heusch C A, Kroseberg J, Lockman W S, Nesom G, Schalk T, Schumm B A, Seiden A, Spradlin P, Williams D C, Wilson M G, Albert J, Chen E, Dubois-Felsmann G P, Dvoretskii A, Hitlin D G, Narsky I, Piatenko T, Porter F C, Ryd A, Samuel A, Yang S, Jayatilleke S, Mancinelli G, Meadows B T, Sokoloff M D, Blanc F, Bloom P, Chen S, Ford W T, Nauenberg U, Olivas A, Rankin P, Ruddick W O, Smith J G, Ulmer K A, Zhang J, Chen A, Eckhart E A, Harton J L, Soffer A, Toki W H, Wilson R J, Zeng Q, Spaan B, Altenburg D, Brandt T, Brose J, Dickopp M, Feltresi E, Hauke A, Lacker H M, Maly E, Nogowski R, Otto S, Petzold A, Schott G, Schubert J, Schubert K R, Schwierz R, Sundermann J E, Bernard D, Bonneaud G R, Grenier P, Schrenk S, Thiebaux Ch, Vasileiadis G, Verderi M, Bard D J, Clark P J, Gradl W, Muheim F, Playfer S, Xie Y, Andreotti M, Azzolini V, Bettoni D, Bozzi C, Calabrese R, Cibinetto G, Luppi E, Negrini M, Piemontese L, Sarti A, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Patteri P, Peruzzi I M, Piccolo M, Zallo A, Buzzo A, Capra R, Contri R, Lo Vetere M, Macri M, Monge M R, Passaggio S, Patrignani C, Robutti E, Santroni A, Tosi S, Bailey S, Brandenburg G, Chaisanguanthum K S, Morii M, Won E, Dubitzky R S, Langenegger U, Marks J, Uwer U, Bhimji W, Bowerman D A, Dauncey P D, Egede U, Gaillard J R, Morton G W, Nash J A, Nikolich M B, Taylor G P, Charles M J, Grenier G J, Mallik U, Cochran J, Crawley H B, Meyer W T, Prell S, Rosenberg E I, Rubin A E, Yi J, Arnaud N, Davier M, Giroux X, Grosdidier G, Höcker A, Le Diberder F, Lepeltier V, Lutz A M, Petersen T C, Pierini M, Plaszczynski S, Rodier S, Roudeau P, Schune M H, Stocchi A, Wormser G, Cheng C H, Lange D J, Simani M C, Wright D M, Bevan A J, Chavez C A, Coleman J P, Forster I J, Fry J R, Gabathuler E, Gamet R, George K A, Hutchcroft D E, Parry R J, Payne D J, Touramanis C, Cormack C M, Di Lodovico F, Brown C L, Cowan G, Flack R L, Flaecher H U, Green M G, Jackson P S, McMahon T R, Ricciardi S, Salvatore F, Winter M A, Brown D, Davis C L, Allison J, Barlow N R, Barlow R J, Hodgkinson M C, Lafferty G D, Naisbit M T, Williams J C, Chen C, Farbin A, Hulsbergen W D, Jawahery A, Kovalskyi D, Lae C K, Lillard V, Roberts D A, Blaylock G, Dallapiccola C, Hertzbach S S, Kofler R, Koptchev V B, Moore T B, Saremi S, Staengle H, Willocq S, Cowan R, Koeneke K, Sciolla G, Sekula S J, Taylor F, Yamamoto R K, Patel P M, Robertson S H, Lazzaro A, Lombardo V, Palombo F, Bauer J M, Cremaldi L, Eschenburg V, Godang R, Kroeger R, Reidy J, Sanders D A, Summers D J, Zhao H W, Brunet S, Côté D, Taras P, Nicholson H, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Monorchio D, Paolucci P, Piccolo D, Sciacca C, Baak M, Bulten H, Raven G, Snoek H L, Wilden L, Jessop C P, Losecco J M, Allmendinger T, Benelli G, Gan K K, Honscheid K, Hufnagel D, Kagan H, Kass R, Pulliam T, Rahimi A M, Ter-Antonyan R, Wong Q K, Brau J, Frey R, Igonkina O, Lu M, Potter C T, Sinev N B, Strom D, Torrence E, Colecchia F, Dorigo A, Galeazzi F, Margoni M, Morandin M, Posocco M, Rotondo M, Simonetto F, Stroili R, Voci C, Benayoun M, Briand H, Chauveau J, David P, Del Buono L, de la Vaissière Ch, Hamon O, John M J J, Leruste Ph, Malclès J, Ocariz J, Roos L, Therin G, Behera P K, Gladney L, Guo Q H, Panetta J, Biasini M, Covarelli R, Pioppi M, Angelini C, Batignani G, Bettarini S, Bucci F, Calderini G, Carpinelli M, Forti F, Giorgi M A, Lusiani A, Marchiori G, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Simi G, Walsh J, Haire M, Judd D, Paick K, Wagoner D E, Danielson N, Elmer P, Lau Y P, Lu C, Olsen J, Smith A J S, Telnov A V, Bellini F, Cavoto G, D'Orazio A, Di Marco E, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Li Gioi L, Mazzoni M A, Morganti S, Piredda G, Polci F, Tehrani F Safai, Voena C, Christ S, Schröder H, Wagner G, Waldi R, Adye T, De Groot N, Franek B, Gopal G P, Olaiya E O, Wilson F F, Aleksan R, Emery S, Gaidot A, Ganzhur S F, Giraud P-F, Graziani G, de Monchenault G Hamel, Kozanecki W, Legendre M, London G W, Mayer B, Vasseur G, Yèche Ch, Zito M, Purohit M V, Weidemann A W, Wilson J R, Yumiceva F X, Abe T, Allen M, Aston D, Bartoldus R, Berger N, Boyarski A M, Buchmueller O L, Claus R, Convery M R, Cristinziani M, Dingfelder J C, Dong D, Dorfan J, Dujmic D, Dunwoodie W, Fan S, Field R C, Glanzman T, Gowdy S J, Hadig T, Halyo V, Hast C, Hryn'ova T, Innes W R, Kelsey M H, Kim P, Kocian M L, Leith D W G S, Libby J, Luitz S, Luth V, Lynch H L, Marsiske H, Messner R, Mohapatra A K, Muller D R, O'Grady C P, Ozcan V E, Perazzo A, Perl M, Ratcliff B N, Roodman A, Salnikov A A, Schindler R H, Schwiening J, Snyder A, Soha A, Stelzer J, Strube J, Su D, Sullivan M K, Thompson J, Va'vra J, Wagner S R, Weaver M, Wisniewski W J, Wittgen M, Wright D H, Yarritu A K, Young C C, Burchat P R, Edwards A J, Majewski S A, Petersen B A, Roat C, Ahmed M, Ahmed S, Alam M S, Ernst J A, Saeed M A, Saleem M, Wappler F R, Bugg W, Krishnamurthy M, Spanier S M, Eckmann R, Kim H, Ritchie J L, Satpathy A, Schwitters R F, Izen J M, Kitayama I, Lou X C, Ye S, Bianchi F, Bona M, Gallo F, Gamba D, Bomben M, Bosisio L, Cartaro C, Cossutti F, Ricca G Della, Dittongo S, Grancagnolo S, Lanceri L, Poropat P, Vitale L, Vuagnin G, Martinez-Vidal F, Panvini R S, Banerjee Sw, Bhuyan B, Brown C M, Fortin D, Hamano K, Jackson P D, Kowalewski R, Roney J M, Sobie R J, Back J J, Harrison P F, Latham T E, Mohanty G B, Band H R, Chen X, Cheng B, Dasu S, Datta M, Eichenbaum A M, Flood K T, Graham M, Hollar J J, Johnson J R, Kutter P E, Li H, Liu R, Mellado B, Mihalyi A, Pan Y, Prepost R, Tan P, von Wimmersperg-Toeller J H, Wu J, Wu S L, Yu Z, Greene M G, Neal H
机构信息
Laboratoire de Physique des Particules, Annecy-le-Vieux, France.
出版信息
Phys Rev Lett. 2005 Jul 22;95(4):042001. doi: 10.1103/PhysRevLett.95.042001. Epub 2005 Jul 20.
We report the first measurement of the branching fraction f(00) for Gamma(4S) --> B(0)B(0). The data sample consists of 81.7 fb(-1) collected at the Gamma(4S) resonance with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) storage ring. Using partial reconstruction of the decay B(0) --> D(+) l(-)nu(l) in which only the charged lepton and the soft pion from the decay D(+) --> D(0)pi(+) are reconstructed, we obtain f(00) = 0.487 +/- 0.010(stat) +/- 0.008(syst). Our result does not depend on the branching fractions of B(0) --> D(+)l(-)nu(l) and D(+) --> D(0)pi(+) decays, on the ratio of the charged and neutral B meson lifetimes, nor on the assumption of isospin symmetry.
我们报告了对Γ(4S)→B⁰B⁰分支比f(00)的首次测量。数据样本由在SLAC PEP-II非对称能量e⁺e⁻储存环上使用BABAR探测器在Γ(4S)共振处收集的81.7 fb⁻¹组成。通过对衰变B⁰→D⁺l⁻ν(l)进行部分重建，其中仅重建带电轻子和来自衰变D⁺→D⁰π⁺的软π介子，我们得到f(00)=0.487±0.010(统计)±0.008(系统)。我们的结果不依赖于B⁰→D⁺l⁻ν(l)和D⁺→D⁰π⁺衰变的分支比、带电和中性B介子寿命的比值，也不依赖于同位旋对称性假设。
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