Fri·Sep 9, 2011Friday·September 9, 2011

1. 01*

   The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76

   MAJORANA Collaboration: A.G. Schubert🇺🇸 · E. Aguayo🇺🇸 · F.T. Avignone III🇺🇸 · H.O. Back🇺🇸 · A.S. Barabash🇷🇺 · M. Bergevin🇺🇸 · F.E. Bertrand🇺🇸 · M. Boswell🇺🇸 · V. Brudanin🇷🇺 · M. Busch🇺🇸 · Y-D. Chan🇺🇸 · C.D. Christofferson🇺🇸 and 80 other authors

   The observation of neutrinoless double-beta decay would determine whether the neutrino is a Majorana particle and provide information on the absolute scale of neutrino mass. The MAJORANA Collaboration is constructing the DEMONSTRATOR, an array of germanium detectors, to search for neutrinoless double-beta decay of 76-Ge. The DEMONSTRATOR will contain 40 kg of germanium; up to 30 kg will be enriched to 86% in 76-Ge. The DEMONSTRATOR will be deployed deep underground in an ultra-low-background shielded environment. Operation of the DEMONSTRATOR aims to determine whether a future tonne-scale germanium experiment can achieve a background goal of one count per tonne-year in a 4-keV region of interest around the 76-Ge neutrinoless double-beta decay Q-value of 2039 keV.

   nucl-exAIP Conf.Proc.(2012)·20 citations
2. 02*

   Recent experimental results from the relativistic heavy-ion collisions at LHC and RHIC

   Ilya Selyuzhenkov🇩🇪

   A new era has started in the field of relativistic heavy-ion physics with lead beams delivered by the Large Hadron Collider (LHC) in November 2010. In this proceedings I highlight the main results from experimental measurements with Pb-Pb collisions at the incident energy of 2.76 TeV/nucleon recorded by the LHC experiments. Recent experimental developments from the Relativistic Heavy Ion Collider (RHIC) at the GeV incident energy scale are also discussed. All together LHC and RHIC measurements provide new insights on the properties and features of the new hot and dense form of matter created in the course of the relativistic heavy-ion collision.

   nucl-ex7 citations
3. 03*

   Discovery of Cesium, Lanthanum, Praseodymium and Promethium Isotopes

   E. May🇺🇸 · M. Thoennessen🇺🇸

   Currently, forty-one cesium, thirty-five lanthanum, thirty-two praseodymium, and thirty-one promethium, isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

   nucl-exAtom.Data Nucl.Data Tabl.(2012)·4 citations
4. 04*

   Accurate calibration of relativistic mean-field models: correlating observables and providing meaningful theoretical uncertainties

   F. J. Fattoyev🇺🇸 · J. Piekarewicz🇺🇸

   Theoretical uncertainties in the predictions of relativistic mean-field models are estimated using a chi-square minimization procedure that is implemented by studying the small oscillations around the chi-square minimum. By diagonalizing the matrix of second derivatives, one gains access to a wealth of information---in the form of powerful correlations---that would normally remain hidden. We illustrate the power of the {\sl covariance analysis} by using two relativistic mean-field models: (a) the original linear Walecka model and (b) the accurately calibrated FSUGold parametrization. In addition to providing meaningful theoretical uncertainties for both model parameters and predicted observables, the covariance analysis establishes robust correlations between physical observables. In particular, we show that whereas the correlation coefficient between the slope of the symmetry energy and the neutron-skin thickness of Lead is indeed very large, a 1% measurement of the neutron radius of Lead may only be able to constrain the slope of the symmetry energy to about 30%.

   ↳ nucl-thnucl-exPRC(2011)·62 citations
5. 05*

   On Generation of Photons Carrying Orbital Angular Momentum in the Helical Undulator

   A.Afanasev🇺🇸 · A.Mikhailichenko🇺🇸

   We analyze properties of electromagnetic radiation in helical undulators with a particular emphasis on orbital angular momentum of the radiated photons. We demonstrate that all harmonics higher than the first one radiated in a helical undulator carry an angular momentum. We discuss some possible applications of this phenomenon and the ways of effective generation of these photons in a helical undulator. We call for review of results of experiments performed where the higher harmonics radiated in a helical undulator might be involved.

   ↳ physics.acc-phhep-phnucl-ex19 citations
6. 06*

   Bound H-dibaryon in the Flavor SU(3) Limit from a Full QCD Simulation on the Lattice

   Takashi Inoue · for HAL QCD Collaboration

   Existence of the H-dibaryon in the flavor SU(3) symmetric limit is studied by full QCD simulations on the lattice, in the approach recently developed for the baryon-baryon (BB) interactions. Potential of the flavor-singlet BB channel is derived from the Nambu-Bethe-Salpeter wave function, and a bound H-dibaryon is discovered from it, with the binding energy of 20--50 MeV for the pseudo-scalar meson mass of 469--1171 MeV.

   ↳ hep-lathep-phnucl-exnucl-thAIP Conf.Proc.(2012)·12 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.