Testing color evaporation in photon-photon production of J/psi at CERN LEP II
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/11/2003
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Resumo |
The DELPHI Collaboration has recently reported the measurement of J/psi production in photon-photon collisions at CERN LEP II. These newly available data provide additional proof of the importance of colored c (c) over bar pairs for the production of charmonium, because these data can be explained only by considering resolved photon processes. We show here that the inclusion of color octet contributions to J/psi production in the framework of the color evaporation model is able to reproduce these data. In particular, the transverse-momentum distribution of the J/psi mesons is well described by this model. |
Formato |
5 |
Identificador |
http://dx.doi.org/10.1103/PhysRevD.68.094009 Physical Review D. College Pk: American Physical Soc, v. 68, n. 9, 5 p., 2003. 0556-2821 http://hdl.handle.net/11449/23681 10.1103/PhysRevD.68.094009 WOS:000186971900028 WOS000186971900028.pdf |
Idioma(s) |
eng |
Publicador |
American Physical Soc |
Relação |
Physical Review D |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |