Light meson spectroscopy from Dalitz plot analyses of decays to , , and produced in two-photon interactions
Articolo
Data di Pubblicazione:
2021
Abstract:
We study the processes gamma gamma -> eta(c )-> eta'K+K-, eta'pi(+)pi(-), and eta pi(+)pi(-) using a data sample of 519 fb(-1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e(+)e(-) collider at center-of-mass energies at and near the Upsilon(nS) (n = 2, 3, 4) resonances. This is the first observation of the decay eta(c)-> eta'K+K- and we measure the branching fraction Gamma (eta(c) -> eta' K+K- )/(Gamma(eta(c) -> eta'pi(+)pi(-)) = 0.644 +/- 0.039(stat) +/- 0.032(sys). Significant interference is observed between gamma gamma ->eta(c)->eta pi(+)pi(-) and the nonresonant two-photon process gamma gamma -> eta pi(+)pi(-). A Dalitz plot analysis is performed of eta(c) decays to eta'K+K-, eta'pi(+)pi(-) and eta pi(+)pi(-). Combined with our previous analysis of eta(c) -> K (K) over bar pi, we measure the K-0*(1430) parameters and the ratio between its eta'K and pi K couplings. The decay eta(c) -> eta'pi(+)pi(-) is dominated by the f(0)(2100) resonance, also observed in J/psi radiative decays. A new a(0) (1700) -> eta pi resonance is observed in the eta(c) -> eta pi(+)pi(-) channel. We also compare eta(c) decays to eta and eta' final states in association with scalar mesons as they relate to the identification of the scalar glueball.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
J.???P. Lees; V. Poireau; V. Tisserand; E. Grauges; A. Palano; G. Eigen; D.???N. Brown; Yu.???G. Kolomensky; M. Fritsch; H. Koch; T. Schroeder; R. Cheaib; C. Hearty; T.???S. Mattison; J.???A. McKenna; R.???Y. So; V.???E. Blinov; A.???R. Buzykaev; V.???P. Druzhinin; V.???B. Golubev; E.???A. Kozyrev; E.???A. Kravchenko; A.???P. Onuchin; S.???I. Serednyakov; Yu.???I. Skovpen; E.???P. Solodov; K.???Yu. Todyshev; A.???J. Lankford; B. Dey; J.???W. Gary; O. Long; A.???M. Eisner; W.???S. Lockman; W. Panduro Vazquez; D.???S. Chao; C.???H. Cheng; B. Echenard; K.???T. Flood; D.???G. Hitlin; J. Kim; Y. Li; D.???X. Lin; T.???S. Miyashita; P. Ongmongkolkul; J. Oyang; F.???C. Porter; M. R??hrken; Z. Huard; B.???T. Meadows; B.???G. Pushpawela; M.???D. Sokoloff; L. Sun; J.???G. Smith; S.???R. Wagner; D. Bernard; M. Verderi; D. Bettoni; C. Bozzi; R. Calabrese; G. Cibinetto; E. Fioravanti; I. Garzia; E. Luppi; V. Santoro; A. Calcaterra; R. de Sangro; G. Finocchiaro; S. Martellotti; P. Patteri; I.???M. Peruzzi; M. Piccolo; M. Rotondo; A. Zallo; S. Passaggio; C. Patrignani; B.???J. Shuve; H.???M. Lacker; B. Bhuyan; U. Mallik; C. Chen; J. Cochran; S. Prell; A.???V. Gritsan; N. Arnaud; M. Davier; F. Le Diberder; A.???M. Lutz; G. Wormser; D.???J. Lange; D.???M. Wright; J.???P. Coleman; E. Gabathuler; D.???E. Hutchcroft; D.???J. Payne; C. Touramanis; A.???J. Bevan; F. Di Lodovico; R. Sacco; G. Cowan; Sw. Banerjee; D.???N. Brown; C.???L. Davis; A.???G. Denig; W. Gradl; K. Griessinger; A. Hafner; K.???R. Schubert; R.???J. Barlow; G.???D. Lafferty; R. Cenci; A. Jawahery; D.???A. Roberts; R. Cowan; S.???H. Robertson; R.???M. Seddon; N. Neri; F. Palombo; L. Cremaldi; R. Godang; D.???J. Summers; P. Taras; G. De Nardo; C. Sciacca; G. Raven; C.???P. Jessop; J.???M. LoSecco; K. Honscheid; R. Kass; A. Gaz; M. Margoni; M. Posocco; G. Simi; F. Simonetto; R. Stroili; S. Akar; E. Ben-Haim; M. Bomben; G.???R. Bonneaud; G. Calderini; J. Chauveau; G. Marchiori; J. Ocariz; M. Biasini; E. Manoni; A. Rossi; G. Batignani; S. Bettarini; M. Carpinelli; G. Casarosa; M. Chrzaszcz; F. Forti; M.???A. Giorgi; A. Lusiani; B. Oberhof; E. Paoloni; M. Rama; G. Rizzo; J.???J. Walsh; L. Zani; A.???J.???S. Smith; F. Anulli; R. Faccini; F. Ferrarotto; F. Ferroni; A. Pilloni; G. Piredda; C. B??nger; S. Dittrich; O. Gr??nberg; M. He??; T. Leddig; C. Vo??; R. Waldi; T. Adye; F.???F. Wilson; S. Emery; G. Vasseur; D. Aston; C. Cartaro; M.???R. Convery; J. Dorfan; W. Dunwoodie; M. Ebert; R.???C. Field; B.???G. Fulsom; M.???T. Graham; C. Hast; W.???R. Innes; P. Kim; D.???W.???G.???S. Leith; S. Luitz; D.???B. MacFarlane; D.???R. Muller; H. Neal; B.???N. Ratcliff; A. Roodman; M.???K. Sullivan; J. Va???vra; W.???J. Wisniewski; M.???V. Purohit; J.???R. Wilson; A. Randle-Conde; S.???J. Sekula; H. Ahmed; M. Bellis; P.???R. Burchat; E.???M.???T. Puccio; M.???S. Alam; J.???A. Ernst; R. Gorodeisky; N. Guttman; D.???R. Peimer; A. Soffer; S.???M. Spanier; J.???L. Ritchie; R.???F. Schwitters; J.???M. Izen; X.???C. Lou; F. Bianchi; F. De Mori; A. Filippi; D. Gamba; L. Lanceri; L. Vitale; F. Martinez-Vidal; A. Oyanguren; J. Albert; A. Beaulieu; F.???U. Bernlochner; G.???J. King; R. Kowalewski; T. Lueck; I.???M. Nugent; J.???M. Roney; R.???J. Sobie; N. Tasneem; T.???J. Gershon; P.???F. Harrison; T.???E. Latham; R. Prepost; S.???L. Wu
Link alla scheda completa:
Link al Full Text:
Pubblicato in: