Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate

B Aubert; R Barate; D Boutigny; J-M Gaillard; A Hicheur; Y Karyotakis; J P Lees; P Robbe; V Tisserand; A Zghiche; A Palano; A Pompili; J C Chen; N D Qi; G Rong; P Wang; Y S Zhu; G Eigen; I Ofte; B Stugu; G S Abrams; A W Borgland; 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; Yu G Kolomensky; J F Kral; G Kukartsev; C LeClerc; M E Levi; G Lynch; L M Mir; P J Oddone; T J Orimoto; M Pripstein; N A Roe; A Romosan; M T Ronan; V G Shelkov; A V Telnov; W A Wenzel; K Ford; T J Harrison; C M Hawkes; D J Knowles; S E Morgan; R C Penny; A T Watson; N K Watson; T Deppermann; K Goetzen; H Koch; B Lewandowski; M Pelizaeus; K Peters; H Schmuecker; M Steinke; N R Barlow; J T Boyd; N Chevalier; W N Cottingham; M P Kelly; T E Latham; C Mackay; F F Wilson; K Abe; T Cuhadar-Donszelmann; C Hearty; T S Mattison; J A McKenna; D Thiessen; P Kyberd; A K McKemey; V E Blinov; A D Bukin; V B Golubev; V N Ivanchenko; E A Kravchenko; A P Onuchin; S I Serednyakov; Yu I Skovpen; E P Solodov; A N Yushkov; D Best; M Bruinsma; M Chao; D Kirkby; A J Lankford; M Mandelkern; R K Mommsen; W Roethel; D P Stoker; C Buchanan; B L Hartfiel; B C Shen; D Del Re; H K Hadavand; E J Hill; D B MacFarlane; H P Paar; Sh Rahatlou; U Schwanke; V Sharma; J W Berryhill; C Campagnari; B Dahmes; N Kuznetsova; S L Levy; O Long; A Lu; M A Mazur; J D Richman; W Verkerke; T W Beck; J Beringer; A M Eisner; C A Heusch; W S Lockman; T Schalk; R E Schmitz; B A Schumm; A Seiden; M Turri; W Walkowiak; D C Williams; M G Wilson; J Albert; E Chen; G P Dubois-Felsmann; A Dvoretskii; D G Hitlin; I Narsky; F C Porter; A Ryd; A Samuel; S Yang; S Jayatilleke; G Mancinelli; B T Meadows; M D Sokoloff; T Abe; F Blanc; P Bloom; S Chen; P J Clark; W T Ford; U Nauenberg; A Olivas; P Rankin; J Roy; J G Smith; W C Van Hoek; L Zhang; J L Harton; T Hu; A Soffer; W H Toki; R J Wilson; J Zhang; D Altenburg; T Brandt; J Brose; T Colberg; M Dickopp; R S Dubitzky; A Hauke; H M Lacker; E Maly; R Müller-Pfefferkorn; R Nogowski; S Otto; J Schubert; K R Schubert; R Schwierz; B Spaan; L Wilden; D Bernard; G R Bonneaud; F Brochard; J Cohen-Tanugi; P Grenier; Ch Thiebaux; G Vasileiadis; M Verderi; A Khan; D Lavin; F Muheim; S Playfer; J E Swain; J Tinslay; M Andreotti; V Azzolini; D Bettoni; C Bozzi; R Calabrese; G Cibinetto; E Luppi; M Negrini; L Piemontese; A Sarti; E Treadwell; F Anulli; R Baldini-Ferroli; M Biasini; A Calcaterra; R De Sangro; D Falciai; G Finocchiaro; P Patteri; I M Peruzzi; M Piccolo; M Pioppi; A Zallo; A Buzzo; R Capra; R Contri; G Crosetti; M Lo Vetere; M Macri; M R Monge; S Passaggio; C Patrignani; E Robutti; A Santroni; S Tosi; S Bailey; M Morii; E Won; W Bhimji; D A Bowerman; P D Dauncey; U Egede; I Eschrich; J R Gaillard; G W Morton; J A Nash; P Sanders; G P Taylor; G J Grenier; S-J Lee; U Mallik; J Cochran; H B Crawley; J Lamsa; W T Meyer; S Prell; E I Rosenberg; J Yi; M Davier; G Grosdidier; A Höcker; S Laplace; F Le Diberder; V Lepeltier; A M Lutz; T C Petersen; S Plaszczynski; M H Schune; L Tantot; G Wormser; V Brigljević; C H Cheng; D J Lange; D M Wright; A J Bevan; J P Coleman; J R Fry; E Gabathuler; R Gamet; M Kay; R J Parry; D J Payne; R J Sloane; C Touramanis; J J Back; P F Harrison; H W Shorthouse; P Strother; P B Vidal; C L Brown; G Cowan; R L Flack; H U Flaecher; S George; M G Green; A Kurup; C E Marker; T R McMahon; S Ricciardi; F Salvatore; G Vaitsas; M A Winter; D Brown; C L Davis; J Allison; R J Barlow; A C Forti; P A Hart; F Jackson; G D Lafferty; A J Lyon; J H Weatherall; J C Williams; A Farbin; A Jawahery; D Kovalskyi; C K Lae; V Lillard; D A Roberts; G Blaylock; C Dallapiccola; K T Flood; S S Hertzbach; R Kofler; V B Koptchev; T B Moore; S Saremi; H Staengle; S Willocq; R Cowan; G Sciolla; F Taylor; R K Yamamoto; D J J Mangeol; M Milek; P M Patel; A Lazzaro; F Palombo; J M Bauer; L Cremaldi; V Eschenburg; R Godang; R Kroeger; J Reidy; D A Sanders; D J Summers; H W Zhao; S Brunet; D Cote-Ahern; 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; M A Baak; G Raven; J M LoSecco; T A Gabriel; B Brau; K K Gan; K Honscheid; D Hufnagel; H Kagan; R Kass; T Pulliam; Q K Wong; J Brau; R Frey; C T Potter; N B 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; Ch de la Vaissière; L Del Buono; O Hamon; M J J John; Ph Leruste; J Ocariz; M Pivk; L Roos; J Stark; S T'Jampens; G Therin; P F Manfredi; V Re; P K Behera; L Gladney; Q H Guo; J Panetta; C Angelini; G Batignani; S Bettarini; M Bondioli; F Bucci; G Calderini; M Carpinelli; F Forti; M A 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; D E Wagoner; N Danielson; P Elmer; C Lu; V Miftakov; J Olsen; A J S Smith; H A Tanaka; E W Varnes; F Bellini; G Cavoto; R Faccini; F Ferrarotto; F Ferroni; M Gaspero; M A Mazzoni; S Morganti; M Pierini; G Piredda; F Safai Tehrani; C Voena; S Christ; G Wagner; R Waldi; T Adye; N De Groot; B Franek; N I Geddes; G P Gopal; E O Olaiya; S M Xella; R Aleksan; S Emery; A Gaidot; S F Ganzhur; P-F Giraud; G Hamel de Monchenault; W Kozanecki; M Langer; M Legendre; G W London; B Mayer; G Schott; G Vasseur; Ch Yeche; M Zito; M V Purohit; A W Weidemann; F X Yumiceva; D Aston; R Bartoldus; N Berger; A M Boyarski; O L Buchmueller; M R Convery; D P Coupal; D Dong; J Dorfan; D Dujmic; W Dunwoodie; R C Field; T Glanzman; S J Gowdy; E Grauges-Pous; T Hadig; V Halyo; T Hryn'ova; W R Innes; C P Jessop; M H Kelsey; P Kim; M L Kocian; U Langenegger; D W G S Leith; S Luitz; V Luth; H L Lynch; H Marsiske; R Messner; D R Muller; C P O'Grady; V E Ozcan; A Perazzo; M Perl; S Petrak; B N Ratcliff; S H Robertson; A Roodman; A A Salnikov; R H Schindler; J Schwiening; G Simi; A Snyder; A Soha; J Stelzer; D Su; M K Sullivan; J Va'vra; S R Wagner; M Weaver; A J R Weinstein; W J Wisniewski; D H Wright; C C Young; P R Burchat; A J Edwards; T I Meyer; B A Petersen; C Roat; S Ahmed; M S Alam; J A Ernst; M Saleem; F R Wappler; W Bugg; M Krishnamurthy; S M Spanier; R Eckmann; H Kim; J L Ritchie; R F Schwitters; J M Izen; I Kitayama; X C Lou; S Ye; F Bianchi; M Bona; F Gallo; D Gamba; C Borean; L Bosisio; G Della Ricca; S Dittongo; S Grancagnolo; L Lanceri; P Poropat; L Vitale; G Vuagnin; R S Panvini; Sw Banerjee; C M Brown; D Fortin; P D Jackson; R Kowalewski; J M Roney; H R Band; S Dasu; M Datta; A M Eichenbaum; J R Johnson; P E Kutter; H Li; R Liu; F Di Lodovico; A Mihalyi; A K Mohapatra; Y Pan; R Prepost; S J Sekula; J H von Wimmersperg-Toeller; J Wu; S L Wu; Z Yu; H Neal; BaBar Collaboration

doi:10.1103/PhysRevLett.92.142002

Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate

Phys Rev Lett. 2004 Apr 9;92(14):142002. doi: 10.1103/PhysRevLett.92.142002. Epub 2004 Apr 5.

Authors

B Aubert¹, R Barate, D Boutigny, J-M Gaillard, A Hicheur, Y Karyotakis, J P Lees, P Robbe, V Tisserand, A Zghiche, A Palano, A Pompili, J C Chen, N D Qi, G Rong, P Wang, Y S Zhu, G Eigen, I Ofte, B Stugu, G S Abrams, A W Borgland, 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, Yu G Kolomensky, J F Kral, G Kukartsev, C LeClerc, M E Levi, G Lynch, L M Mir, P J Oddone, T J Orimoto, M Pripstein, N A Roe, A Romosan, M T Ronan, V G Shelkov, A V Telnov, W A Wenzel, K Ford, T J Harrison, C M Hawkes, D J Knowles, S E Morgan, R C Penny, A T Watson, N K Watson, T Deppermann, K Goetzen, H Koch, B Lewandowski, M Pelizaeus, K Peters, H Schmuecker, M Steinke, N R Barlow, J T Boyd, N Chevalier, W N Cottingham, M P Kelly, T E Latham, C Mackay, F F Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, T S Mattison, J A McKenna, D Thiessen, P Kyberd, A K McKemey, V E Blinov, A D Bukin, V B Golubev, V N Ivanchenko, E A Kravchenko, A P Onuchin, S I Serednyakov, Yu I Skovpen, E P Solodov, A N Yushkov, D Best, M Bruinsma, M Chao, D Kirkby, A J Lankford, M Mandelkern, R K Mommsen, W Roethel, D P Stoker, C Buchanan, B L Hartfiel, B C Shen, D Del Re, H K Hadavand, E J Hill, D B MacFarlane, H P Paar, Sh Rahatlou, U Schwanke, V Sharma, J W Berryhill, C Campagnari, B Dahmes, N Kuznetsova, S L Levy, O Long, A Lu, M A Mazur, J D Richman, W Verkerke, T W Beck, J Beringer, A M Eisner, C A Heusch, W S Lockman, T Schalk, R E Schmitz, B A Schumm, A Seiden, M Turri, W Walkowiak, D C Williams, M G Wilson, J Albert, E Chen, G P Dubois-Felsmann, A Dvoretskii, D G Hitlin, I Narsky, F C Porter, A Ryd, A Samuel, S Yang, S Jayatilleke, G Mancinelli, B T Meadows, M D Sokoloff, T Abe, F Blanc, P Bloom, S Chen, P J Clark, W T Ford, U Nauenberg, A Olivas, P Rankin, J Roy, J G Smith, W C Van Hoek, L Zhang, J L Harton, T Hu, A Soffer, W H Toki, R J Wilson, J Zhang, D Altenburg, T Brandt, J Brose, T Colberg, M Dickopp, R S Dubitzky, A Hauke, H M Lacker, E Maly, R Müller-Pfefferkorn, R Nogowski, S Otto, J Schubert, K R Schubert, R Schwierz, B Spaan, L Wilden, D Bernard, G R Bonneaud, F Brochard, J Cohen-Tanugi, P Grenier, Ch Thiebaux, G Vasileiadis, M Verderi, A Khan, D Lavin, F Muheim, S Playfer, J E Swain, J Tinslay, M Andreotti, V Azzolini, D Bettoni, C Bozzi, R Calabrese, G Cibinetto, E Luppi, M Negrini, L Piemontese, A Sarti, E Treadwell, F Anulli, R Baldini-Ferroli, M Biasini, A Calcaterra, R De Sangro, D Falciai, G Finocchiaro, P Patteri, I M Peruzzi, M Piccolo, M Pioppi, A Zallo, A Buzzo, R Capra, R Contri, G Crosetti, M Lo Vetere, M Macri, M R Monge, S Passaggio, C Patrignani, E Robutti, A Santroni, S Tosi, S Bailey, M Morii, E Won, W Bhimji, D A Bowerman, P D Dauncey, U Egede, I Eschrich, J R Gaillard, G W Morton, J A Nash, P Sanders, G P Taylor, G J Grenier, S-J Lee, U Mallik, J Cochran, H B Crawley, J Lamsa, W T Meyer, S Prell, E I Rosenberg, J Yi, M Davier, G Grosdidier, A Höcker, S Laplace, F Le Diberder, V Lepeltier, A M Lutz, T C Petersen, S Plaszczynski, M H Schune, L Tantot, G Wormser, V Brigljević, C H Cheng, D J Lange, D M Wright, A J Bevan, J P Coleman, J R Fry, E Gabathuler, R Gamet, M Kay, R J Parry, D J Payne, R J Sloane, C Touramanis, J J Back, P F Harrison, H W Shorthouse, P Strother, P B Vidal, C L Brown, G Cowan, R L Flack, H U Flaecher, S George, M G Green, A Kurup, C E Marker, T R McMahon, S Ricciardi, F Salvatore, G Vaitsas, M A Winter, D Brown, C L Davis, J Allison, R J Barlow, A C Forti, P A Hart, F Jackson, G D Lafferty, A J Lyon, J H Weatherall, J C Williams, A Farbin, A Jawahery, D Kovalskyi, C K Lae, V Lillard, D A Roberts, G Blaylock, C Dallapiccola, K T Flood, S S Hertzbach, R Kofler, V B Koptchev, T B Moore, S Saremi, H Staengle, S Willocq, R Cowan, G Sciolla, F Taylor, R K Yamamoto, D J J Mangeol, M Milek, P M Patel, A Lazzaro, F Palombo, J M Bauer, L Cremaldi, V Eschenburg, R Godang, R Kroeger, J Reidy, D A Sanders, D J Summers, H W Zhao, S Brunet, D Cote-Ahern, 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, M A Baak, G Raven, J M LoSecco, T A Gabriel, B Brau, K K Gan, K Honscheid, D Hufnagel, H Kagan, R Kass, T Pulliam, Q K Wong, J Brau, R Frey, C T Potter, N B 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, Ch de la Vaissière, L Del Buono, O Hamon, M J J John, Ph Leruste, J Ocariz, M Pivk, L Roos, J Stark, S T'Jampens, G Therin, P F Manfredi, V Re, P K Behera, L Gladney, Q H Guo, J Panetta, C Angelini, G Batignani, S Bettarini, M Bondioli, F Bucci, G Calderini, M Carpinelli, F Forti, M A 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, D E Wagoner, N Danielson, P Elmer, C Lu, V Miftakov, J Olsen, A J S Smith, H A Tanaka, E W Varnes, F Bellini, G Cavoto, R Faccini, F Ferrarotto, F Ferroni, M Gaspero, M A Mazzoni, S Morganti, M Pierini, G Piredda, F Safai Tehrani, C Voena, S Christ, G Wagner, R Waldi, T Adye, N De Groot, B Franek, N I Geddes, G P Gopal, E O Olaiya, S M Xella, R Aleksan, S Emery, A Gaidot, S F Ganzhur, P-F Giraud, G Hamel de Monchenault, W Kozanecki, M Langer, M Legendre, G W London, B Mayer, G Schott, G Vasseur, Ch Yeche, M Zito, M V Purohit, A W Weidemann, F X Yumiceva, D Aston, R Bartoldus, N Berger, A M Boyarski, O L Buchmueller, M R Convery, D P Coupal, D Dong, J Dorfan, D Dujmic, W Dunwoodie, R C Field, T Glanzman, S J Gowdy, E Grauges-Pous, T Hadig, V Halyo, T Hryn'ova, W R Innes, C P Jessop, M H Kelsey, P Kim, M L Kocian, U Langenegger, D W G S Leith, S Luitz, V Luth, H L Lynch, H Marsiske, R Messner, D R Muller, C P O'Grady, V E Ozcan, A Perazzo, M Perl, S Petrak, B N Ratcliff, S H Robertson, A Roodman, A A Salnikov, R H Schindler, J Schwiening, G Simi, A Snyder, A Soha, J Stelzer, D Su, M K Sullivan, J Va'vra, S R Wagner, M Weaver, A J R Weinstein, W J Wisniewski, D H Wright, C C Young, P R Burchat, A J Edwards, T I Meyer, B A Petersen, C Roat, S Ahmed, M S Alam, J A Ernst, M Saleem, F R Wappler, W Bugg, M Krishnamurthy, S M Spanier, R Eckmann, H Kim, J L Ritchie, R F Schwitters, J M Izen, I Kitayama, X C Lou, S Ye, F Bianchi, M Bona, F Gallo, D Gamba, C Borean, L Bosisio, G Della Ricca, S Dittongo, S Grancagnolo, L Lanceri, P Poropat, L Vitale, G Vuagnin, R S Panvini, Sw Banerjee, C M Brown, D Fortin, P D Jackson, R Kowalewski, J M Roney, H R Band, S Dasu, M Datta, A M Eichenbaum, J R Johnson, P E Kutter, H Li, R Liu, F Di Lodovico, A Mihalyi, A K Mohapatra, Y Pan, R Prepost, S J Sekula, J H von Wimmersperg-Toeller, J Wu, S L Wu, Z Yu, H Neal; BaBar Collaboration

Affiliation

¹ Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France.

PMID: 15089530
DOI: 10.1103/PhysRevLett.92.142002

Abstract

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.