Mon·Jul 18, 2016Monday·July 18, 2016

1. 01*

   Configuration interaction in symmetry-conserving covariant density functional theory

   P. W. Zhao🇺🇸 · P. Ring🇨🇳 · J. Meng🇨🇳

   A new method to calculate spectroscopic properties of deformed nuclei is proposed: configuration interaction on top of projected density functional theory (CI-PDFT). The general concept of this approach is discussed in the framework of covariant density functional theory and its validity is illustrated in an application to the yrast band of the nucleus Cr-54. It is found that the experimentally observed excitation energies for the yrast band in Cr-54 can be well reproduced. In contrast to conventional shell-model calculations, there is no core and only a relatively small number of configurations is sufficient for a satisfying description. No new parameters are necessary, because the effective interaction is derived from an universal density functional given in the literature.

   ↳ nucl-thnucl-exPRC(2016)·31 citations
2. 02*

   Dissecting nucleon transition electromagnetic form factors

   Jorge Segovia🇩🇪 · Craig D. Roberts🇺🇸

   In Poincaré-covariant continuum treatments of the three valence-quark bound-state problem, the force behind dynamical chiral symmetry breaking also generates nonpointlike, interacting diquark correlations in the nucleon and its resonances. We detail the impact of these correlations on the electromagnetically-induced nucleon-$\Delta$ and nucleon-Roper transitions, providing a flavour-separation of the latter and associated predictions that can be tested at modern facilities.

   ↳ nucl-thhep-lathep-phnucl-exPRC(2016)·44 citations
3. 03*

   Measurement of open heavy-flavour production as a function of charged-particle multiplicity with ALICE at the LHC

   Sibaliso Mhlanga (for the ALICE Collaboration)🇿🇦

   Heavy quarks are produced in the early stages of ultra-relativistic hadron collisions via hard scatterings and are an important tool for studying different aspects of Quantum Chromodynamics (QCD) in hadronic collisions. Charged-particle multiplicity gives information on the global characteristics of the event and could be used to characterize particle production mechanisms. In hadronic collisions at Large Hadron Collider (LHC) energies, there is a significant contribution of multi-parton interactions. The measurement of heavy-flavour yields as a function of charged-particle multiplicity gives insight into the mechanisms influencing their production in hadronic collisions at these energies and it is a tool to test the possible influence of multi-parton interactions. Furthermore, the charged-particle multiplicity dependence of open heavy flavours is used to test the ability of QCD theoretical models to describe the data. In ALICE, heavy-flavour production is measured via the hadronic and semi-leptonic decay channels (electrons at central rapidity and muons at forward rapidity). Charged-particle multiplicity is measured at central and forward rapidity. We will present the results on open heavy-flavour production as a function of the charged-particle multiplicity in pp and pPb collisions. Results will be compared to quarkonia measurements as well as theoretical model calculations.

   ↳ hep-exnucl-exJ.Phys.Conf.Ser.(2017)·0 citations
4. 04*

   Measurement of the cosmogenic activation of germanium detectors in EDELWEISS-III

   The EDELWEISS Collaboration: E. Armengaud🇫🇷 · Q. Arnaud🇫🇷 · C. Augier🇫🇷 · A. Benoît🇫🇷 · L. Bergé🇫🇷 · J. Billard🇫🇷 · J. Blümer🇩🇪 · T. de Boissière🇫🇷 · A. Broniatowski🇫🇷 · P. Camus🇫🇷 · A. Cazes🇫🇷 · M. Chapellier🇫🇷 and 36 other authors

   We present a measurement of the cosmogenic activation in the germanium cryogenic detectors of the EDELWEISS III direct dark matter search experiment. The decay rates measured in detectors with different exposures to cosmic rays above ground are converted into production rates of different isotopes. The measured production rates in units of nuclei/kg/day are 82 $\pm$ 21 for ${}^3$H, 2.8 $\pm$ 0.6 for ${}^{49}$V, 4.6 $\pm$ 0.7 for ${}^{55}$Fe, and 106 $\pm$ 13 for ${}^{65}$Zn. These results are the most accurate for these isotopes. A lower limit on the production rate of ${}^{68}$Ge of 74 nuclei/kg/day is also presented. They are compared to model predictions present in literature and to estimates calculated with the ACTIVIA code.

   ↳ astro-ph.COhep-exnucl-exphysics.ins-detAstropart.Phys.(2017)·42 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.