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

Journal Article · Tue Apr 26 04:00:00 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]

---

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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1348; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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