J/ψ and ψ′ production and their normal nuclear absorption in proton-nucleus collisions at 400∈GeV

B. Alessandro, C. Alexa, R. Arnaldi, M. Atayan, S. Beolè, V. Boldea, P. Bordalo, G. Borges, J. Castor, B. Chaurand, B. Cheynis, E. Chiavassa, C. Cicalò, M. P. Comets, S. Constantinescu, P. Cortese, A. De Falco, N. De Marco, G. Dellacasa, A. DevauxS. Dita, J. Fargeix, P. Force, M. Gallio, C. Gerschel, P. Giubellino, M. B. Golubeva, A. Grigoryan, J. Y. Grossiord, F. F. Guber, A. Guichard, H. Gulkanyan, M. Idzik, D. Jouan, T. L. Karavicheva, L. Kluberg, A. B. Kurepin, Y. Le Bornec, C. Lourenço, M. Mac Cormick, A. Marzari-Chiesa, M. Masera, A. Masoni, M. Monteno, A. Musso, P. Petiau, A. Piccotti, J. R. Pizzi, F. Prino, G. Puddu, C. Quintans, L. Ramello, S. Ramos, L. Riccati, H. Santos, P. Saturnini, E. Scomparin, S. Serci, R. Shahoyan, M. Sitta, P. Sonderegger, X. Tarrago, N. S. Topilskaya, G. L. Usai, E. Vercellin, L. Villatte, N. Willis

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

We report a new measurement of J/ψ, ψ′ and Drell-Yan cross-sections, in the kinematical domain -0.425<y cm<0.575 and -0.5<cosθ CS<0.5, performed at the CERN-SPS using 400 GeV/c incident protons on Be, Al, Cu, Ag, W and Pb targets. The dependence of the charmonia production cross-sections on the size of the target nucleus allows to quantify the so-called normal nuclear absorption. In the framework of the Glauber model, this new measurement is combined with results previously obtained with the same apparatus, under different experimental conditions, and leads to a precise determination of the J/ψ and ψ′ absorption cross-sections in the surrounding nuclear matter.

Lingua originaleInglese
pagine (da-a)329-341
Numero di pagine13
RivistaEuropean Physical Journal C
Volume48
Numero di pubblicazione2
DOI
Stato di pubblicazionePubblicato - nov 2006

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