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Titolo:
Excitation of color degrees of freedom of nuclear matter and J/psi suppression
Autore:
Hufner, J; Kopeliovich, BZ; Polleri, A;
Indirizzi:
Univ Heidelberg, Inst Theoret Phys, D-69120 Heidelberg, Germany Univ Heidelberg Heidelberg Germany D-69120 , D-69120 Heidelberg, Germany Max Planck Inst Kernphys, D-69029 Heidelberg, Germany Max Planck Inst Kernphys Heidelberg Germany D-69029 Heidelberg, Germany Joint Nucl Res Inst, Dubna 141980, Moscow Region, Russia Joint Nucl Res Inst Dubna Moscow Region Russia 141980 scow Region, Russia
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL A
fascicolo: 4, volume: 11, anno: 2001,
pagine: 457 - 465
SICI:
1434-6001(200108)11:4<457:EOCDOF>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOTAL CROSS-SECTIONS; HEAVY-ION COLLISIONS; CHARMONIUM SUPPRESSION; COHERENCE LENGTH; PSI' SUPPRESSION; P-A; PHOTOPRODUCTION; DISTRIBUTIONS; SCATTERING; GEV/C;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Hufner, J Univ Heidelberg, Inst Theoret Phys, Philosophenweg 19, D-69120 Heidelberg,Germany Univ Heidelberg Philosophenweg 19 Heidelberg Germany D-69120 ny
Citazione:
J. Hufner et al., "Excitation of color degrees of freedom of nuclear matter and J/psi suppression", EUR PHY J A, 11(4), 2001, pp. 457-465

Abstract

In high-energy nuclear collisions, the conventional Glauber model is commonly used to evaluate the contribution to J/psi suppression originating fromthe inelastic interaction with colorless bound nucleons. This requires an effective value for the J/psi -nucleon absorption cross-section which is larger than theoretically expected. On the other hand, multiple nucleon-nucleon collisions, mediated by color exchange interactions, excite their color degrees of freedom. We investigate the importance of this effect and find that these excited states provide a larger cross-section for J/psi absorption. We conclude that the related corrections are important to explain the effective value extrapolated from experiment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:00:31