A search for the production of the eta(c)' meson, the first radial excitation of the ground state of charmonium eta(c)(2980), in the photon-photon fusion reaction at LEP has been performed using the data collected by the DELPHI detector during 1992-1996. No evidence of eta(c)' production is found in the mass region 3520-3800 MeV/c(2). An upper limit for the ratio of the two-photon widths of the eta(c)' and eta(c) is obtained. (C) 1998 Published by Elsevier Science B.V. All rights reserved.
A search for eta '(c) production in photon-photon fusion at LEP / Delphi, Collaboration; Abreu, P.; Adam, W.; Canale, Vincenzo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 441:(1998), pp. 479-490. [10.1016/S0370-2693(98)01300-8]
A search for eta '(c) production in photon-photon fusion at LEP
CANALE, VINCENZO
1998
Abstract
A search for the production of the eta(c)' meson, the first radial excitation of the ground state of charmonium eta(c)(2980), in the photon-photon fusion reaction at LEP has been performed using the data collected by the DELPHI detector during 1992-1996. No evidence of eta(c)' production is found in the mass region 3520-3800 MeV/c(2). An upper limit for the ratio of the two-photon widths of the eta(c)' and eta(c) is obtained. (C) 1998 Published by Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
