Fri·May 6, 2016Friday·May 6, 2016

1. 01*

   Direct Neutrino Mass Experiments

   Susanne Mertens🇺🇸

   With a mass at least six orders of magnitudes smaller than the mass of an electron -- but non-zero -- neutrinos are a clear misfit in the Standard Model of Particle Physics. On the one hand, its tiny mass makes the neutrino one of the most interesting particles, one that might hold the key to physics beyond the Standard Model. On the other hand this minute mass leads to great challenges in its experimental determination. Three approaches are currently pursued: An indirect neutrino mass determination via cosmological observables, the search for neutrinoless double $\beta$-decay, and a direct measurement based on the kinematics of single $\beta$-decay. In this paper the latter will be discussed in detail and the status and scientific reach of the current and near-future experiments will be presented.

   nucl-exphysics.ins-detJ.Phys.Conf.Ser.(2016)·68 citations
2. 02*

   Heavy ions at the Future Circular Collider

   A. Dainese🇮🇹 · U.A. Wiedemann (editors)🇨🇭 · N. Armesto🇪🇸 · D. d'Enterria🇨🇭 · J.M. Jowett🇨🇭 · J.-P. Lansberg🇫🇷 · J.G. Milhano🇨🇭 · C.A. Salgado🇪🇸 · M. Schaumann🇨🇭 · M. van Leeuwen (section editors)🇳🇱 · J.L. Albacete🇪🇸 · A. Andronic🇩🇪 and 51 other authors

   The Future Circular Collider (FCC) Study is aimed at assessing the physics potential and the technical feasibility of a new collider with centre-of-mass energies, in the hadron-hadron collision mode, seven times larger than the nominal LHC energies. Operating such machine with heavy ions is an option that is being considered in the accelerator design studies. It would provide, for example, Pb-Pb and p-Pb collisions at sqrt{s_NN} = 39 and 63 TeV, respectively, per nucleon-nucleon collision, with integrated luminosities above 30 nb^-1 per month for Pb-Pb. This is a report by the working group on heavy-ion physics of the FCC Study. First ideas on the physics opportunities with heavy ions at the FCC are presented, covering the physics of the Quark-Gluon Plasma, of gluon saturation, of photon-induced collisions, as well as connections with other fields of high-energy physics.

   ↳ hep-phhep-exnucl-exnucl-thCERN Yellow Rep.(2017)·92 citations
3. 03*

   Structure of ${}^{78}$Ni from first principles computations

   G. Hagen🇺🇸 · G. R. Jansen🇺🇸 · T. Papenbrock🇺🇸

   Doubly magic nuclei have a simple structure and are the cornerstones for entire regions of the nuclear chart. Theoretical insights into the supposedly doubly magic ${}^{78}$Ni and its neighbors are challenging because of the extreme neutron-to-proton ratio and the proximity of the continuum. We predict the $J^{\pi }=2_1^{+}$ state in ${}^{78}$Ni from a correlation with the $J^{\pi }=2_1^{+}$ state in ${}^{48}$Ca using chiral nucleon-nucleon and three-nucleon interactions. Our results confirm that ${}^{78}$Ni is doubly magic, and the predicted low-lying states of ${}^{79,80}$Ni open the way for shell-model studies of many more rare isotopes.

   ↳ nucl-thnucl-exPRL(2016)·141 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.