Measurement of J / psi and psi-prime suppression in p-A collisions at 800-GeV/c - INSPIRE

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Measurement of J / psi and psi-prime suppression in p-A collisions at 800-GeV/c

NuSea

Collaboration

•

M.J. Leitch
(
- Los Alamos
)

Sep, 1999

5 pages

Published in:

Phys.Rev.Lett. 84 (2000) 3256-3260

e-Print:

nucl-ex/9909007 [nucl-ex]

DOI:

10.1103/PhysRevLett.84.3256

Report number:

LA-UR-99-5007,
FERMILAB-PUB-99-394-E

Experiments:

FNAL-E-0866

View in:

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reference search348 citations

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Abstract:

Measurements of the suppression of the yield per nucleon of J/Psi and Psi' production for 800 GeV/c protons incident on heavy relative to light nuclear targets have been made with very broad coverage in xF and pT. The observed suppression is smallest at xF values of 0.25 and below and increases at larger values of xF. It is also strongest at small pT. Substantial differences between the Psi' and J/Psi are observed for the first time in p-A collisions. The suppression for the Psi' is stronger than that for the J/Psi for xF near zero, but becomes comparable to that for the J/Psi for xF > 0.6.

Note:

5 pages, 4 figures, accepted for publication by PRL Report-no: LA-UR-99-5007

p nucleus: inclusive reaction
beryllium
iron
tungsten
psi mesons: hadroproduction
psi mesons: leptonic decay
yield: (psi(3685) J/psi(3100))
x-dependence
transverse momentum dependence
dependence: mass number

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