Charmonium production and nuclear absorption in p-A interactions at 450 GeV

被引：95

作者：

Alessandro, B ^{[1
]}

Alexa, C

Arnaldi, R

Atayan, M

Baglin, C

Baldit, A

Beolè, S

Boldea, V

Bordalo, P

Borenstein, SR

Borges, G

Bussière, A

Capelli, L

Castanier, C

Castor, J

Chaurand, B

Cheynis, B

Chiavassa, E

Cicalò, C

Claudino, T

Comets, MP

Constans, N

Constantinescu, S

Cortese, P

Cruz, J

De Falco, A

De Marco, N

Dellacasa, G

Devaux, A

Dita, S

Drapier, O

Espagnon, B

Fargeix, J

Force, P

Gallio, M

Gerschel, C

Giubellino, P

Golubeva, MB

Gonin, M

Grigorian, AA

Grigorian, S

Grossiord, JY

Guber, FF

Guichard, A

Gulkanyan, H

Idzik, M

Jouan, D

Karavitcheva, TL

Kluberg, L

Kurepin, AB

机构：

[1] Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy

[2] Univ Piemonte Orientale, Alessandria, Italy

[3] CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[4] Univ Clermont Ferrand, LPC, Aubiere, France

[5] CNRS, IN2P3, Aubiere, France

[6] IFA, Bucharest, Romania

[7] Univ Cagliari, Ist Nazl Fis Nucl, Cagliari, Italy

[8] CERN, Geneva, Switzerland

[9] LIP, P-1000 Lisbon, Portugal

[10] INR, Moscow, Russia

[11] Univ Paris 11, IPN, Orsay, France

[12] CNRS, IN2P3, F-91405 Orsay, France

[13] Ecole Polytech, Lab Leprince Ringuet, Palaiseau, France

[14] CNRS, IN2P3, Palaiseau, France

[15] Univ Lyon 1, IPNL, F-69622 Villeurbanne, France

[16] CNRS, IN2P3, F-69622 Villeurbanne, France

[17] YerPhI, Yerevan, Armenia

[18] Univ Tecn Lisboa, IST, P-1100 Lisbon, Portugal

[19] UMM, Fac Phys & Nucl Tech, Krakow, Poland

来源：

EUROPEAN PHYSICAL JOURNAL C | 2004年 / 33卷 / 01期

关键词：

D O I：

10.1140/epjc/s2003-01539-y

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The production of J/psi and psi' charmonium states in proton-nucleus interactions has been investigated by the NA50 experiment, at the CERN SPS. High statistics data sets were collected with collisions induced by 450 GeV protons incident on Be, Al, Cu, Ag and W targets. The J/psi and psi' production cross-sections have been determined for each p-A system and their dependences on the nucleus size have been studied, leading to the so-called normal nuclear absorption. Comparing the two patterns we see that the nuclear absorption is stronger for the psi' than for the J/psi. Given the high statistics of the data samples, the x(F) (or rapidity) differential cross-sections of the J/psi and psi' states have also been studied, for each of the target nuclei.

引用

页码：31 / 40

页数：10

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