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Measurement of sigma(chi c2)B(chi(c2)-> J/psi gamma)/sigma(chi c1)B(chi(c1)-> J/psi gamma) in p(p)over-bar collisions at root s=1.96 TeV

Abulencia A.
•
Adelman J.
•
Affolder T.
altro
Zucchelli S.
2007
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We measure the ratio of cross section times branching fraction, R(p)=sigma(chi c2)B(chi(c2)-> J/psi gamma)/sigma(chi c1)B(chi(c1)-> J/psi gamma), in 1.1 fb(-1) of p (p) over bar collisions at root s=1.96 TeV. This measurement covers the kinematic range p(T)(J/psi)> 4.0 GeV/c, |eta(J/psi)< 1.0, and p(T)(gamma)> 1.0 GeV/c. For events due to prompt processes, we find R(p)=0.395 +/- 0.016(stat)+/- 0.015(syst). This result represents a significant improvement in precision over previous measurements of prompt chi(c1,2) hadro production.
DOI
10.1103/PhysRevLett.98.232001
WOS
WOS:000247107200012
Archivio
http://hdl.handle.net/11390/879439
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-34547241669
Diritti
metadata only access
Scopus© citazioni
56
Data di acquisizione
Jun 14, 2022
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Web of Science© citazioni
40
Data di acquisizione
Mar 27, 2024
Visualizzazioni
2
Data di acquisizione
Apr 19, 2024
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