Thu·Oct 19, 2017Thursday·October 19, 2017

1. 01*

   Phi Meson Measurements at RHIC with the PHENIX Detector

   Murad Sarsour (PHENIX Collaboration)🇺🇸

   The measurement of phi mesons provides a unique and complementary method for exploring properties of the hot and dense medium created in the relativistic heavy ion collisions. It has a relatively small hadronic interaction cross section and is sensitive to the increase of strangeness (strangeness enhancement), a phenomenon associated with soft particles in bulk matter. Measurements in the dilepton channels are especially interesting since leptons interact only electromagnetically, thus carrying the information from their production phase directly to the detector. Measurements in different nucleus-nucleus collisions allow us to perform a systematic study of the nuclear medium effects on phi meson production. The PHENIX detector provides the capabilities to measure the phi meson production in a wide range of transverse momentum and rapidity to study these effects. In this proceeding, we present measurements of the phi mesons in a variety of collision systems at $\sqrt{s_{N}N}=200$ GeV. In case of small systems, the data are compared with AMPT calculations to study the various cold nuclear medium effects involved in phi meson production.

   nucl-exEPJ Web Conf.(2018)·0 citations
2. 02*

   Quasiparticle and $\gamma$-band structures in ${}^{156}$Dy

   S. Jehangir · G.H. Bhat · J.A. Sheikh · S. Frauendorf🇺🇸 · S.N.T. Majola🇿🇦 · P.A. Ganai · J.F. Sharpey-Schafer

   Excited band structures recently observed in ${}^{156}$Dy are investigated using the microscopic triaxial projected shell model (TPSM) approach and the quasiparticle random phase approximation (QRPA) based on the rotating mean-field. It is demonstrated that new observed excited bands, tracking the ground-state band, are the $\gamma$-bands based on the excited two-quasineutron configurations as conjectured in the experimental work.

   ↳ nucl-thnucl-exPRC(2018)·29 citations
3. 03*

   Radioactive heat production of six geologically important nuclides

   Thomas Ruedas

   Heat production rates for the geologically important nuclides ${}^{26}$Al, ${}^{40}$K, ${}^{60}$Fe, ${}^{232}$Th, ${}^{235}$U, and ${}^{238}$U are calculated on the basis of recent data on atomic and nuclear properties. The revised data differ by several per cent from some older values, but indicate that more recent analyses converge toward values with an accuracy sufficient for all common geoscience applications, although some possibilities for improvement still remain, especially in the case of ${}^{40}$K and with regard to the determination of half-lives. A Python script is provided for calculating heat production (https://github.com/trg818/radheat).

   ↳ astro-ph.EPnucl-exGeochem.Geophys.Geosyst.(2017)·5 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.