对一个激发态粲重子Ωc*衰变到Ωc0γ的观测。
Observation of an excited charm baryon Omega c* decaying to Omega c0gamma.
作者信息
Aubert B, Bona M, Boutigny D, Couderc F, Karyotakis Y, Lees J P, Poireau V, Tisserand V, Zghiche A, Grauges E, Palano A, Chen J C, Qi N D, Rong G, Wang P, Zhu Y S, Eigen G, Ofte I, Stugu B, Abrams G S, Battaglia M, Brown D N, Button-Shafer J, Cahn R N, Charles E, Gill M S, Groysman Y, Jacobsen R G, Kadyk J A, Kerth L T, Kolomensky Yu G, Kukartsev G, Lynch G, Mir L M, Orimoto T J, Pripstein M, Roe N A, Ronan M T, Wenzel W A, del Amo Sanchez P, Barrett M, Ford K E, Hart A J, Harrison T J, Hawkes C M, Watson A T, Held T, Koch H, Lewandowski B, Pelizaeus M, Peters K, Schroeder T, Steinke M, Boyd J T, Burke J P, Cottingham W N, Walker D, Asgeirsson D J, Cuhadar-Donszelmann T, Fulsom B G, Hearty C, Knecht N S, Mattison T S, McKenna J A, Khan A, Kyberd P, Saleem M, Sherwood D J, Teodorescu L, Blinov V E, Bukin A D, Druzhinin V P, Golubev V B, Onuchin A P, Serednyakov S I, Skovpen Yu I, Solodov E P, Todyshev K Yu, Bondioli M, Bruinsma M, Chao M, Curry S, Eschrich I, Kirkby D, Lankford A J, Lund P, Mandelkern M, Mommsen R K, Roethel W, Stoker D P, Abachi S, Buchanan C, Foulkes S D, Gary J W, Long O, Shen B C, Wang K, Zhang L, Hadavand H K, Hill E J, Paar H P, Rahatlou S, Sharma V, Berryhill J W, Campagnari C, Cunha A, Dahmes B, Hong T M, Kovalskyi D, Richman J D, 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, Dvoretskii A, Fang F, Hitlin D G, Narsky I, Piatenko T, Porter F C, Ryd A, Mancinelli G, Meadows B T, Mishra K, Sokoloff M D, Blanc F, Bloom P C, Chen S, Ford W T, Hirschauer J F, Kreisel A, Nagel M, Nauenberg U, Olivas A, Ruddick W O, Smith J G, Ulmer K A, Wagner S R, Zhang J, Chen A, Eckhart E A, Soffer A, Toki W H, Wilson R J, Winklmeier F, Zeng Q, Altenburg D D, Feltresi E, Hauke A, Jasper H, Merkel J, Petzold A, Spaan B, Brandt T, Klose V, Lacker H M, Mader W F, Nogowski R, Schubert J, Schubert K R, Schwierz R, Sundermann J E, Volk A, Bernard D, Bonneaud G R, Latour E, Thiebaux Ch, Verderi M, Clark P J, Gradl W, Muheim F, Playfer S, Robertson A I, Xie Y, Andreotti M, Bettoni D, Bozzi C, Calabrese R, Cibinetto G, Luppi E, Negrini M, Petrella A, Piemontese L, Prencipe E, Anulli F, Baldini-Ferroli R, Calcaterra A, de Sangro R, Finocchiaro G, Pacetti S, Patteri P, Peruzzi I M, Piccolo M, Rama M, Zallo A, Buzzo A, Contri R, Lo Vetere M, Macri M M, Monge M R, Passaggio S, Patrignani C, Robutti E, Santroni A, Tosi S, Brandenburg G, Chaisanguanthum K S, Morii M, Wu J, Dubitzky R S, Marks J, Schenk S, Uwer U, Bhimji W, Bowerman D A, Dauncey P D, Egede U, Flack R L, Nash J A, Nikolich M B, Panduro Vazquez W, Bard D J, Behera P K, Chai X, Charles M J, Mallik U, Meyer N T, Ziegler V, Cochran J, Crawley H B, Dong L, Eyges V, Meyer W T, Prell S, Rosenberg E I, Rubin A E, Gritsan A V, Denig A G, Fritsch M, Schott G, Arnaud N, Davier M, Grosdidier G, Höcker A, Le Diberder F, Lepeltier V, Lutz A M, Oyanguren A, Pruvot S, Rodier S, Roudeau P, Schune M H, Stocchi A, Wang W F, Wormser G, Cheng C H, Lange D J, Wright D M, Chavez C A, Forster I J, Fry J R, Gabathuler E, Gamet R, George K A, Hutchcroft D E, Payne D J, Schofield K C, Touramanis C, Bevan A J, Di Lodovico F, Menges W, Sacco R, Cowan G, Flaecher H U, Hopkins D A, Jackson P S, McMahon T R, Ricciardi S, Salvatore F, Wren A C, Brown D N, Davis C L, Allison J, Barlow N R, Barlow R J, Chia Y M, Edgar C L, Lafferty G D, Naisbit M T, Williams J C, Yi J I, Chen C, Hulsbergen W D, Jawahery A, Lae C K, Roberts D A, Simi G, Blaylock G, Dallapiccola C, Hertzbach S S, Li X, Moore T B, Saremi S, Staengle H, Cowan R, Sciolla G, Sekula S J, Spitznagel M, Taylor F, Yamamoto R K, Kim H, Mclachlin S E, Patel P M, Robertson S H, Lazzaro A, Lombardo V, Palombo F, Bauer J M, Cremaldi L, Eschenburg V, Godang R, Kroeger R, Sanders D A, Summers D J, Zhao H W, Brunet S, Côté D, Simard M, Taras P, Viaud F B, Nicholson H, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Monorchio D, Paolucci P, Piccolo D, Sciacca C, Baak M A, Raven G, Snoek H L, Jessop C P, LoSecco J M, Allmendinger T, Benelli G, Corwin L A, Gan K K, Honscheid K, Hufnagel D, Jackson P D, Kagan H, Kass R, Rahimi A M, Regensburger J J, Ter-Antonyan R, Wong Q K, Blount N L, Brau J, Frey R, Igonkina O, Kolb J A, Lu M, Rahmat R, Sinev N B, Strom D, Strube J, Torrence E, Gaz A, Margoni M, Morandin M, Pompili A, 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, Hartfiel B L, Leruste Ph, Malclès J, Ocariz J, Roos L, Therin G, Gladney L, Biasini M, Covarelli R, Angelini C, Batignani G, Bettarini S, Bucci F, Calderini G, Carpinelli M, Cenci R, Forti F, Giorgi M A, Lusiani A, Marchiori G, Mazur M A, Morganti M, Neri N, Paoloni E, Rizzo G, Walsh J J, Haire M, Judd D, Wagoner D E, Biesiada J, 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, del Re D, 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, Ebert M, Schröder H, Waldi R, Adye T, De Groot N, Franek B, Olaiya E O, Wilson F F, Aleksan R, Emery S, Gaidot A, Ganzhur S F, Hamel de Monchenault G, Kozanecki W, Legendre M, Vasseur G, Yèche Ch, Zito M, Chen X R, Liu H, Park W, Purohit M V, Wilson J R, Allen M T, Aston D, Bartoldus R, Bechtle P, Berger N, Claus R, Coleman J P, Convery M R, Cristinziani M, Dingfelder J C, Dorfan J, Dubois-Felsmann G P, Dujmic D, Dunwoodie W, Field R C, Glanzman T, Gowdy S J, Graham M T, Grenier P, Halyo V, Hast C, Hryn'ova T, Innes W R, Kelsey M H, Kim P, Leith D W G S, Li S, Luitz S, Luth V, Lynch H L, MacFarlane D B, Marsiske H, Messner R, Muller D R, O'Grady C P, Ozcan V E, Perazzo A, Perl M, Pulliam T, Ratcliff B N, Roodman A, Salnikov A A, Schindler R H, Schwiening J, Snyder A, Stelzer J, Su D, Sullivan M K, Suzuki K, Swain S K, Thompson J M, Va'vra J, van Bakel N, Weaver M, Weinstein A J R, Wisniewski W J, Wittgen M, Wright D H, Yarritu A K, Yi K, Young C C, Burchat P R, Edwards A J, Majewski S A, Petersen B A, Roat C, Wilden L, Ahmed S, Alam M S, Bula R, Ernst J A, Jain V, Pan B, Saeed M A, Wappler F R, Zain S B, Bugg W, Krishnamurthy M, Spanier S M, Eckmann R, Ritchie J L, Satpathy A, Schilling C J, Schwitters R F, Izen J M, Lou X C, Ye S, Bianchi F, Gallo F, Gamba D, Bomben M, Bosisio L, Cartaro C, Cossutti F, Della Ricca G, Dittongo S, Lanceri L, Vitale L, Azzolini V, Lopez-March N, Martinez-Vidal F, Banerjee Sw, Bhuyan B, Brown C M, Fortin D, Hamano K, Kowalewski R, Nugent I M, Roney J M, Sobie R J, Back J J, Harrison P F, Latham T E, Mohanty G B, Pappagallo M, Band H R, Chen X, Cheng B, Dasu S, Datta M, Flood K T, Hollar J J, Kutter P E, Mellado B, Mihalyi A, Pan Y, Pierini M, Prepost R, Wu S L, Yu Z, Neal H
机构信息
Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, F-74941 Annecy-Le-Vieux, France.
出版信息
Phys Rev Lett. 2006 Dec 8;97(23):232001. doi: 10.1103/PhysRevLett.97.232001. Epub 2006 Dec 6.
We report the first observation of an excited singly charmed baryon Omega c* (css) in the radiative decay Omega c0gamma, where the Omega c0 baryon is reconstructed in the decays to the final states Omega(-)pi+, Omega(-)pi+pi0, Omega(-)pi+pi(-)pi+, and Xi(-)K(-)pi+pi+. This analysis is performed using a data set of 230.7 fb(-1) collected by the BABAR detector at the PEP-II asymmetric-energy B factory at the Stanford Linear Accelerator Center. The mass difference between the Omega c* and the Omega c0 baryons is measured to be 70.8+/-1.0(stat)+/-1.1(syst) MeV/c2. We also measure the ratio of inclusive production cross sections of Omega c* and Omega c0 in e+e(-) annihilation.
我们报道了在辐射衰变Ωc0γ中首次观测到激发的单魅重子Ωc*（css），其中Ωc0重子通过衰变到末态Ω−π+、Ω−π+π0、Ω−π+π−π+和Ξ−K−π+π+进行重建。该分析使用了斯坦福直线加速器中心的PEP-II非对称能量B工厂的BABAR探测器收集的230.7 fb−1的数据集。测得Ωc和Ωc0重子之间的质量差为70.8±1.0（统计）±1.1（系统）MeV/c2。我们还测量了在e+e−湮灭中Ωc和Ωc0的包含产生截面的比值。
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