ηc介子以及一个ηc(2S)候选粒子的质量和宽度测量。
Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate.
作者信息
Aubert B, Barate R, Boutigny D, Gaillard J-M, Hicheur A, Karyotakis Y, Lees J P, Robbe P, Tisserand V, Zghiche A, Palano A, 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, Kral J F, Kukartsev G, LeClerc C, Levi M E, Lynch G, Mir L M, Oddone P J, Orimoto T J, Pripstein M, Roe N A, Romosan A, Ronan M T, Shelkov V G, Telnov A V, Wenzel W A, Ford K, Harrison T J, Hawkes C M, Knowles D J, Morgan S E, Penny R C, Watson A T, Watson N K, Deppermann T, Goetzen K, Koch H, Lewandowski B, Pelizaeus M, Peters K, Schmuecker H, Steinke M, Barlow N R, Boyd J T, Chevalier N, Cottingham W N, Kelly M P, Latham T E, Mackay C, Wilson F F, Abe K, Cuhadar-Donszelmann T, Hearty C, Mattison T S, McKenna J A, Thiessen D, Kyberd P, McKemey A K, Blinov V E, Bukin A D, 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, Bruinsma M, Chao M, Kirkby D, Lankford A J, Mandelkern M, Mommsen R K, Roethel W, Stoker D P, Buchanan C, Hartfiel B L, Shen B C, Del Re D, Hadavand H K, Hill E J, MacFarlane D B, Paar H P, Rahatlou Sh, Schwanke U, Sharma V, Berryhill J W, Campagnari C, Dahmes B, Kuznetsova N, Levy S L, Long O, Lu A, Mazur M A, Richman J D, Verkerke W, Beck T W, Beringer J, Eisner A M, Heusch C A, Lockman W S, Schalk T, Schmitz R E, Schumm B A, Seiden A, Turri M, Walkowiak W, Williams D C, Wilson M G, Albert J, Chen E, Dubois-Felsmann G P, Dvoretskii A, Hitlin D G, Narsky I, Porter F C, Ryd A, Samuel A, Yang S, Jayatilleke S, Mancinelli G, Meadows B T, Sokoloff M D, Abe T, Blanc F, Bloom P, Chen S, Clark P J, Ford W T, Nauenberg U, Olivas A, Rankin P, Roy J, Smith J G, Van Hoek W C, Zhang L, Harton J L, Hu T, Soffer A, Toki W H, Wilson R J, Zhang J, Altenburg D, Brandt T, Brose J, Colberg T, Dickopp M, Dubitzky R S, Hauke A, Lacker H M, Maly E, Müller-Pfefferkorn R, Nogowski R, Otto S, Schubert J, Schubert K R, Schwierz R, Spaan B, Wilden L, Bernard D, Bonneaud G R, Brochard F, Cohen-Tanugi J, Grenier P, Thiebaux Ch, Vasileiadis G, Verderi M, Khan A, Lavin D, Muheim F, Playfer S, Swain J E, Tinslay J, Andreotti M, Azzolini V, Bettoni D, Bozzi C, Calabrese R, Cibinetto G, Luppi E, Negrini M, Piemontese L, Sarti A, Treadwell E, Anulli F, Baldini-Ferroli R, Biasini M, Calcaterra A, De Sangro R, Falciai D, Finocchiaro G, Patteri P, Peruzzi I M, Piccolo M, Pioppi M, Zallo A, Buzzo A, Capra R, Contri R, Crosetti G, Lo Vetere M, Macri M, Monge M R, Passaggio S, Patrignani C, Robutti E, Santroni A, Tosi S, Bailey S, Morii M, Won E, Bhimji W, Bowerman D A, Dauncey P D, Egede U, Eschrich I, Gaillard J R, Morton G W, Nash J A, Sanders P, Taylor G P, Grenier G J, Lee S-J, Mallik U, Cochran J, Crawley H B, Lamsa J, Meyer W T, Prell S, Rosenberg E I, Yi J, Davier M, Grosdidier G, Höcker A, Laplace S, Le Diberder F, Lepeltier V, Lutz A M, Petersen T C, Plaszczynski S, Schune M H, Tantot L, Wormser G, Brigljević V, Cheng C H, Lange D J, Wright D M, Bevan A J, Coleman J P, Fry J R, Gabathuler E, Gamet R, Kay M, Parry R J, Payne D J, Sloane R J, Touramanis C, Back J J, Harrison P F, Shorthouse H W, Strother P, Vidal P B, Brown C L, Cowan G, Flack R L, Flaecher H U, George S, Green M G, Kurup A, Marker C E, McMahon T R, Ricciardi S, Salvatore F, Vaitsas G, Winter M A, Brown D, Davis C L, Allison J, Barlow R J, Forti A C, Hart P A, Jackson F, Lafferty G D, Lyon A J, Weatherall J H, Williams J C, Farbin A, Jawahery A, Kovalskyi D, Lae C K, Lillard V, Roberts D A, Blaylock G, Dallapiccola C, Flood K T, Hertzbach S S, Kofler R, Koptchev V B, Moore T B, Saremi S, Staengle H, Willocq S, Cowan R, Sciolla G, Taylor F, Yamamoto R K, Mangeol D J J, Milek M, Patel P M, Lazzaro A, 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, Cote-Ahern D, Hast C, Taras P, Nicholson H, Cartaro C, Cavallo N, De Nardo G, Fabozzi F, Gatto C, Lista L, Paolucci P, Piccolo D, Sciacca C, Baak M A, Raven G, LoSecco J M, Gabriel T A, Brau B, Gan K K, Honscheid K, Hufnagel D, Kagan H, Kass R, Pulliam T, Wong Q K, Brau J, Frey R, 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, Tiozzo G, Voci C, Benayoun M, Briand H, Chauveau J, David P, de la Vaissière Ch, Del Buono L, Hamon O, John M J J, Leruste Ph, Ocariz J, Pivk M, Roos L, Stark J, T'Jampens S, Therin G, Manfredi P F, Re V, Behera P K, Gladney L, Guo Q H, Panetta J, Angelini C, Batignani G, Bettarini S, Bondioli M, Bucci F, Calderini G, Carpinelli M, Forti F, Giorgi M A, Lusiani A, Marchiori G, Martinez-Vidal F, Morganti M, Neri N, Paoloni E, Rama M, Rizzo G, Sandrelli F, Walsh J, Haire M, Judd D, Paick K, Wagoner D E, Danielson N, Elmer P, Lu C, Miftakov V, Olsen J, Smith A J S, Tanaka H A, Varnes E W, Bellini F, Cavoto G, Faccini R, Ferrarotto F, Ferroni F, Gaspero M, Mazzoni M A, Morganti S, Pierini M, Piredda G, Safai Tehrani F, Voena C, Christ S, Wagner G, Waldi R, Adye T, De Groot N, Franek B, Geddes N I, Gopal G P, Olaiya E O, Xella S M, Aleksan R, Emery S, Gaidot A, Ganzhur S F, Giraud P-F, Hamel de Monchenault G, Kozanecki W, Langer M, Legendre M, London G W, Mayer B, Schott G, Vasseur G, Yeche Ch, Zito M, Purohit M V, Weidemann A W, Yumiceva F X, Aston D, Bartoldus R, Berger N, Boyarski A M, Buchmueller O L, Convery M R, Coupal D P, Dong D, Dorfan J, Dujmic D, Dunwoodie W, Field R C, Glanzman T, Gowdy S J, Grauges-Pous E, Hadig T, Halyo V, Hryn'ova T, Innes W R, Jessop C P, Kelsey M H, Kim P, Kocian M L, Langenegger U, Leith D W G S, Luitz S, Luth V, Lynch H L, Marsiske H, Messner R, Muller D R, O'Grady C P, Ozcan V E, Perazzo A, Perl M, Petrak S, Ratcliff B N, Robertson S H, Roodman A, Salnikov A A, Schindler R H, Schwiening J, Simi G, Snyder A, Soha A, Stelzer J, Su D, Sullivan M K, Va'vra J, Wagner S R, Weaver M, Weinstein A J R, Wisniewski W J, Wright D H, Young C C, Burchat P R, Edwards A J, Meyer T I, Petersen B A, Roat C, Ahmed S, Alam M S, Ernst J A, Saleem M, Wappler F R, Bugg W, Krishnamurthy M, Spanier S M, Eckmann R, Kim H, Ritchie J L, Schwitters R F, Izen J M, Kitayama I, Lou X C, Ye S, Bianchi F, Bona M, Gallo F, Gamba D, Borean C, Bosisio L, Della Ricca G, Dittongo S, Grancagnolo S, Lanceri L, Poropat P, Vitale L, Vuagnin G, Panvini R S, Banerjee Sw, Brown C M, Fortin D, Jackson P D, Kowalewski R, Roney J M, Band H R, Dasu S, Datta M, Eichenbaum A M, Johnson J R, Kutter P E, Li H, Liu R, Di Lodovico F, Mihalyi A, Mohapatra A K, Pan Y, Prepost R, Sekula S J, von Wimmersperg-Toeller J H, Wu J, Wu S L, Yu Z, Neal H
机构信息
Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France.
出版信息
Phys Rev Lett. 2004 Apr 9;92(14):142002. doi: 10.1103/PhysRevLett.92.142002. Epub 2004 Apr 5.
The mass m(eta(c)) and total width Gamma(eta(c))(tot) of the eta(c) meson have been measured in two-photon interactions at the SLAC e(+)e(-) asymmetric B Factory with the BABAR detector. With a sample of approximately 2500 reconstructed eta(c)-->K(0)(S)K+/-pi(-/+) decays in 88 fb(-1) of data, the results are m(eta(c))=2982.5+/-1.1(stat)+/-0.9(syst) MeV/c(2) and Gamma(eta(c))(tot)=34.3+/-2.3(stat)+/-0.9(syst) MeV/c(2). Using the same decay mode, a second resonance with 112+/-24 events is observed with a mass of 3630.8+/-3.4(stat)+/-1.0(syst) MeV/c(2) and width of 17.0+/-8.3(stat)+/-2.5(syst) MeV/c(2). This observation is consistent with expectations for the eta(c)(2S) state.
利用SLAC正负电子非对称B工厂的BABAR探测器，通过双光子相互作用测量了ηc介子的质量m(ηc)和总宽度Γ(ηc)(tot)。在88 fb⁻¹的数据中，有大约2500个重建的ηc→K⁰(S)K⁺⁻π⁻⁺衰变样本，结果为m(ηc)=2982.5±1.1(统计)±0.9(系统)MeV/c²，Γ(ηc)(tot)=34.3±2.3(统计)±0.9(系统)MeV/c²。使用相同的衰变模式，观察到一个具有112±24个事例的第二共振态，其质量为3630.8±3.4(统计)±1.0(系统)MeV/c²，宽度为17.0±8.3(统计)±2.5(系统)MeV/c²。这一观察结果与ηc(2S)态的预期相符。
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