Bulletin of the American Physical Society
APS April Meeting 2016
Volume 61, Number 6
Saturday–Tuesday, April 16–19, 2016; Salt Lake City, Utah
Session J10: Heavy Flavor Hadrons |
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Sponsoring Units: DNP GHP Chair: Peter Petreczky, Brookhaven National Laboratory Room: 250B |
Sunday, April 17, 2016 10:45AM - 10:57AM |
J10.00001: Exotic and Charmonium(-like) states at BESIII Peilian Liu The BESIII Experiment at the Beijing Electron Positron Collider (BEPCII) has accumulated the world's largest samples of direct $e^+e^-$ collisions in the tau-charm region. From the collected samples, which include $e^+e^-$ annihilations at J/psi, psi(2S), psi(3770) peaks and in the region from 3.8 GeV to 4.6 GeV, BESIII has produced many new physics results in the spectroscopy, transitions, and decays of charmonium(-like) states. This talk will cover the latest results over a wide range of topics from radiative and hadronic transitions among charmonium states, as well as the productions and decays of the $XYZ$ states. [Preview Abstract] |
Sunday, April 17, 2016 10:57AM - 11:09AM |
J10.00002: Vector D and B mesons in asymmetric and hot dense medium. Rahul Chhabra, Arvind kumar We calculate the effect of density and temperature of isospin asymmetric non-strange medium on the shift in masses and decay constants of vector D and B mesons using chiral SU(3) model and QCD sum rule approach. In the present investigation the values of quark and gluon condensates are calculated from the chiral SU(3) model and these condensates are further used as input in the QCD Sum rule framework. These condensates are further used to calculate the in medium masses and decay constants of vector D and B mesons. These in medium properties of vector D and B mesons are helpful to understand the experimental observables of the experiments like CBM and PANDA under FAIR project at GSI, Germany. The results which are observed in present work are also compared with the previous predictions. . [Preview Abstract] |
Sunday, April 17, 2016 11:09AM - 11:21AM |
J10.00003: Magnetic Moments of Baryons in the Unquenched Quark Model Gustavo Hazel Guerrero Navarro, Roelof Bijker We present the results of the Unquenched Quark Model (UQM) to obtain the total and transition magnetic moments of decuplet and octet baryons. We include the contribution of baryon-meson components in the wave function of the corresponding baryons as a consecuense of the description of flavour asymmetry in the proton. The principal results are the transition magnetic moments of the sigma baryons and in this UQM we compare with the experimental data at this time. The total magnetic moments of baryons are also a first result and a consistense prove of the UQM, where we include the $q \bar q$ sea pairs only to the barion-pion contribution. [Preview Abstract] |
Sunday, April 17, 2016 11:21AM - 11:33AM |
J10.00004: ABSTRACT WITHDRAWN |
Sunday, April 17, 2016 11:33AM - 11:45AM |
J10.00005: High-precision lattice calculation of the decay constants $f_B$ and $f_{B_s}$ Carleton DeTar, Alexei Bazavov, Claude Bernard, Christopher Bouchard, Nathan Brown, Daping Du, Aida El Khadra, Elizabeth Freeland, Elvira Gamiz, Steven Gottlieb, Heechang Na, Urs Heller, Javad Komijani, Andreas Kronfeld, John Laiho, Paul Mackenzie, Ethan Neil, James Simone, Robert Sugar, Douglas Toussaint, Ruth Van de Water, Ran Zhou We present preliminary, high-precision results for the hadronic decay constants of the $B$ and the $B_s$ mesons from lattice QCD simulations using a highly improved quark formulation for both heavy and light valence quarks. Calculations are carried out with several heavy valence-quark masses on lattice ensembles with 2+1+1 flavors of HISQ sea quarks at five lattice spacings and three light sea quark mass ratios $m_{ud}/m_s$, including approximately physical sea quark masses. This range of parameters provides excellent control of the continuum limit and of heavy-quark discretization errors. [Preview Abstract] |
Sunday, April 17, 2016 11:45AM - 11:57AM |
J10.00006: Updated axial meson spectrum and scalar-glueball mixing in AdS/QCD Sean Bartz, Joshua Rollag AdS/QCD is a proposed duality between strongly-coupled quantum chromodynamics and weakly-coupled 5D gravity that can offer new insight to hadronic physics. Previous work accurately models confinement and chiral symmetry breaking in the light hadron spectrum. We improve this model by incorporating new experimental data and making predictions for the scalar glueball sector. Recent COMPASS results indicate a new light axial-vector resonance between the ground state and the currently-accepted value for the first excited state. Incorporating this data lessens the model's dependence on unphysical short length scales. In addition, we analyze the mixing between scalar mesons and glueball by computing to first approximation the radial excitation spectra of these particles. We find good experimental agreement for the scalar mesons and show that predictions for the excited glueball spectrum differ from lattice results. [Preview Abstract] |
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