Nuclear Theory·nucl-th

Monday·October 19, 2015

5 papers—2 primary·3 cross-listed

03
On the rapidity dependence of the average transverse momentum in hadronic collisions
F. O. Durães🇧🇷 · A. V. Giannini🇧🇷 · V. P. Goncalves🇧🇷 · F. S. Navarra🇧🇷
The energy and rapidity dependence of the average transverse momentum $⟨ p_{T} ⟩$ in $pp$ and $p A$ collisions at RHIC and LHC energies are estimated using the Colour Glass Condensate (CGC) formalism. We update previous predictions for the $p_{T}$ - spectra using the hybrid formalism of the CGC approach and two phenomenological models for the dipole - target scattering amplitude. We demonstrate that these models are able to describe the RHIC and LHC data for the hadron production in $pp$ , $d A u$ and $pP b$ collisions at $p_{T} \leq 20$ GeV. Moreover, we present our predictions for $⟨ p_{T} ⟩$ and demonstrate that the ratio $⟨ p_{T} (y)⟩ / ⟨ p_{T} (y = 0)⟩$ decreases with the rapidity and has a behaviour similar to that predicted by hydrodynamical calculations.
↳ hep-phhep-exnucl-exnucl-thPRC(2016)·18 citations
04
FRG Approach to Nuclear Matter at Extreme Conditions
Péter Pósfay🇭🇺 · Gergely Gábor Barnaföldi🇭🇺 · Antal Jakovác🇭🇺
Functional renormalization group (FRG) is an exact method for taking into account the effect of quantum fluctuations in the effective action of the system. The FRG method applied to effective theories of nuclear matter yields equation of state which incorporates quantum fluctuations of the fields. Using the local potential approximation (LPA) the equation of state for Walecka-type models of nuclear matter under extreme conditions could be determined. These models can be tested by solving the corresponding Tolman--Oppenheimer--Volkov (TOV) equations and investigating the properties (mass and radius) of the corresponding compact star models. Here, we present the first steps on this way, we obtained a Maxwell construction within the FRG-based framework using a Walecka-type Lagrangian.
↳ hep-phastro-ph.HEnucl-thPoS(2015)·3 citations
05
Theory Considerations For Nucleosynthesis Beyond Fe With Special Emphasis On p-Nuclei In Massive Stars
T. Rauscher · N. Nishimura · R. Hirschi
Nucleosynthesis of heavy elements requires the use of different experimental and theoretical methods to determine astrophysical reaction rates than light element nucleosynthesis. Additionally, there are also larger uncertainties involved in the astrophysical models, both because the sites are not well known and because of differing numerical treatments in different models. As an example for the latter, the production of p-nuclei is compared in two different stellar models, demonstrating that a model widely used for postproduction calculations may have a zone grid too coarse to follow the synthesis of p-nuclei in detail.
↳ astro-ph.HEnucl-thAIP Conf.Proc.(2016)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE

On the rapidity dependence of the average transverse momentum in hadronic collisions

FRG Approach to Nuclear Matter at Extreme Conditions

Theory Considerations For Nucleosynthesis Beyond Fe With Special Emphasis On p-Nuclei In Massive Stars

Affiliations