Mon·May 18, 2015Monday·May 18, 2015

1. 01*

   Heavy-flavor production in heavy-ion collisions and implications for the properties of hot QCD matter

   R. Averbeck🇩🇪

   Hadrons carrying open heavy flavor, i.e. single charm or bottom quarks, are among the key diagnostic tools available today for the hot and dense state of strongly interacting matter which is produced in collisions of heavy atomic nuclei at ultra-relativistic energies. First systematic heavy-flavor measurements in nucleus-nucleus collisions and the reference proton-proton system at Brookhaven National Laboratory's (BNL) Relativistic Heavy Ion Collider (RHIC) have led to tantalizing results. These studies are now continued and extended at RHIC and at CERN's Large Hadron Collider (LHC), where considerably higher collision energies are available. This review focuses on experimental results on open heavy-flavor observables at RHIC and the LHC published until July 2012. Yields of heavy-flavor hadrons and their decay products, their transverse momentum and rapidity distributions, as well as their azimuthal distributions with respect to the reaction plane in heavy-ion collisions are investigated. Various theoretical approaches are confronted with the data and implications for the properties of the hot and dense medium produced in ultra-relativistic heavy-ion collisions are discussed.

   nucl-exhep-exPPNP(2013)·46 citations
2. 02*

   Directed Flow of Charged Kaons in Au+Au Collisions from the BES Program at RHIC

   Yadav Pandit🇺🇸

   We report the measurement of the directed flow ($v_1$) for charged kaons in Au+Au collisions at $\sqrt{s_{NN}}$ =7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV as a function of rapidity and compare these results for pions, protons and antiprotons. These new kaon results may help to constrain the medium properties and collision dynamics including the in-medium kaon potential and baryon number transport in these collisions.

   nucl-exJ.Phys.Conf.Ser.(2015)·1 citation
3. 03*

   Structures in 9Be, 10Be and 10B studied with tensor-optimized shell model

   Takayuki Myo🇯🇵 · Atsushi Umeya🇯🇵 · Hiroshi Toki🇯🇵 · Kiyomi Ikeda🇯🇵

   We investigate the structures of ${}^{9,10}$Be and ${}^{10}$B with the tensor-optimized shell model (TOSM) using the effective interaction based on the bare nucleon-nucleon interaction AV8${}^{\prime }$. The tensor correlation is treated in TOSM with the full optimization of 2p2h configurations including high-momentum components. The short-range correlation is described in the unitary correlation operator method (UCOM). It is found that the level orders of the low-lying states of ${}^{9,10}$Be and ${}^{10}$B are entirely reproduced. For ${}^9$Be, ground band states are located relatively in higher energy than the experiments, which indicates the missing $\alpha$ clustering correlation in these states as seen in the case of ${}^8$Be with TOSM. In addition, the tensor force gives the larger attraction for $T$=1/2 states than for $T$=3/2 ones for ${}^9$Be. For ${}^{10}$Be, the tensor contribution of $0_2^{+}$ shows the largest value among the $0^{+}$ states. This can be related to the $\alpha$ clustering correlation in this state. It is also found that the level order of three nuclei depends on the tensor force in comparison with the results obtained with the Minnesota interaction without the tensor force.

   ↳ nucl-thnucl-exPTEP(2015)·8 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.