Quarkonium and B sub(c) mesons from Pb + Pb at LHC energies

The bb([Upsilon]) mesons appear to be produced in the initial PbPb collision at 2.76 TeV per nucleon pair followed by partial melting in the hot quark-gluon plasma. In sharp contrast, the cc (J/[psi]) mesons seem more likely to be formed by recombination at the hadronization stage. The B sub(c) meso...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. Conference series Vol. 458; pp. 1 - 6
Main Authors Norbeck, Edwin, Nachtman, Jane, Onel, Yasar
Format Journal Article
LanguageEnglish
Published 01.01.2013
Subjects
Flavor (particle physics)
Lead (metal)
Melting
Mesons
Nucleons
Quark-gluon plasma
Quarks
Texts
Online AccessGet full text

Cover

More Information
Summary:The bb([Upsilon]) mesons appear to be produced in the initial PbPb collision at 2.76 TeV per nucleon pair followed by partial melting in the hot quark-gluon plasma. In sharp contrast, the cc (J/[psi]) mesons seem more likely to be formed by recombination at the hadronization stage. The B sub(c) mesons, with one quark of each kind are seldom seen in pp collisions because a particle-antiparticle pair requires the simultaneous production of four heavy quarks. Although a family of B sub(c) mesons have been predicted, only the ground state has been seen. If the cc mesons are produced by recombination, it could be expected that B sub(c) mesons would be abundant with PbPb. Because the quark and antiquark have different flavor, the B sub(c) are relatively long lived, 0.45 ps (to be compared with about 1.5 ps for the lighter B mesons). They would be seen with PbPb reactions by (ProQuest: Formulae and/or non-USASCII text omitted) looking at muons and pions from displaced vertices.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
content type line 23
ObjectType-Feature-2
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/458/1/012026