Dynamical heavy-quark recombination and the non-photonic single electron puzzle at RHIC

Journal Article · Tue Apr 26 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3579436· OSTI ID:21516693

Ayala, Alejandro ^[1]; Magnin, J ^[2]; Montano, Luis Manuel ^[3]; Toledo Sanchez, G ^[4]

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1. Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico Distrito Federal 04510 (Mexico)
2. Centro Brasileiro de Pesquisas Fisicas, CBPF-DCP, Rua Dr. Xavier Sigaud 150, 22290-180, Rio de Janeiro (Brazil)
3. Centro de Investigacion y de Estudios Avanzados del IPN, Apartado Postal 14-740, Mexico Distrito Federal 07000 (Mexico)
4. Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20-364, Mexico Distrito Federal 01000 (Mexico)

We show that the single, non-photonic electron nuclear modification factor R{sub AA}{sup e} is affected by the thermal enhancement of the heavy-baryon to heavy-meson ratio in relativistic heavy-ion collisions with respect to proton-proton collisions. We make use of the dynamical quark recombination model to compute such ratio and show that this produces a sizable suppression factor for the R{sub AA}{sup e} at intermediate transverse momenta. We argue that such suppression factor needs to be considered, in addition to the energy loss contribution, in calculations of R{sub AA}{sup e}.

• OSTI ID: 21516693
• Journal Information: AIP Conference Proceedings, Vol. 1348, Issue 1; Conference: 5. international workshop on high-pT physics at LHC, Mexico City (Mexico), 27 Sep - 1 Oct 2010; Other Information: DOI: 10.1063/1.3579436; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BARYONS
BROOKHAVEN RHIC
C QUARKS
ELECTRONS
ENERGY LOSSES
HEAVY ION REACTIONS
IONS
MESONS
PARTICLE PRODUCTION
PROBABILITY
PROTON-PROTON INTERACTIONS
RECOMBINATION
RELATIVISTIC RANGE
T QUARKS
TRANSVERSE MOMENTUM
ACCELERATORS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
BOSONS
CHARGED PARTICLES
CHARM PARTICLES
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION ACCELERATORS
INTERACTIONS
LEPTONS
LINEAR MOMENTUM
LOSSES
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
QUARKS
STORAGE RINGS
TOP PARTICLES