Fri·Nov 24, 2017Friday·November 24, 2017

1. 01*

   Hard exclusive pion electroproduction at backward angles with CLAS

   K. Park · M. Guidal · R.W. Gothe · B. Pire · K. Semenov-Tian-Shansky · J.-M. Laget

   We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, $ep\to e^{\prime }n{\pi }^{+}$, above the resonance region at backward pion center-of-mass angles. The ${\phi }_{\pi }^{\ast }$-dependent cross sections were measured, from which we extracted three combinations of structure functions of the proton. Our results are compatible with calculations based on nucleon-to-pion transition distribution amplitudes (TDAs) and shed new light on nucleon structure.

   nucl-exhep-exhep-phnucl-thPLB(2018)·30 citations
2. 02*

   Hydrodynamic predictions for 5.44 TeV Xe+Xe collisions

   Giuliano Giacalone🇫🇷 · Jacquelyn Noronha-Hostler🇺🇸 · Matthew Luzum🇧🇷 · Jean-Yves Ollitrault🇫🇷

   We argue that relativistic hydrodynamics is able to make robust predictions for soft particle production in Xe+Xe collisions at the CERN Large Hadron Collider (LHC). The change of system size from Pb+Pb to Xe+Xe provides a unique opportunity to test the scaling laws inherent to fluid dynamics. Using event-by-event hydrodynamic simulations, we make quantitative predictions for several observables: mean transverse momentum, anisotropic flow coefficients, and their fluctuations. Results are shown as function of collision centrality.

   ↳ nucl-thhep-phnucl-exPRC(2018)·139 citations
3. 03*

   Design and Performance of the Spin Asymmetries of the Nucleon Experiment

   J.D. Maxwell🇺🇸 · W.R. Armstrong🇺🇸 · S. Choi🇰🇷 · M. K. Jones · H. Kang🇰🇷 · A. Liyanage · Z.-E. Meziani🇺🇸 · J. Mulholland🇺🇸 · L. Ndukum🇺🇸 · O.A. Rondon🇺🇸 · A. Ahmidouch🇺🇸 · I. Albayrak🇺🇸 and 93 other authors

   The Spin Asymmetries of the Nucleon Experiment (SANE) performed inclusive, double-polarized electron scattering measurements of the proton at the Continuous Electron Beam Accelerator Facility at Jefferson Lab. A novel detector array observed scattered electrons of four-momentum transfer $2.5<Q^2<6.5$ GeV${}^2$ and Bjorken scaling $0.3<x<0.8$ from initial beam energies of 4.7 and 5.9 GeV. Employing a polarized proton target whose magnetic field direction could be rotated with respect to the incident electron beam, both parallel and near perpendicular spin asymmetries were measured, allowing model-independent access to transverse polarization observables $A_1$, $A_2$, $g_1$, $g_2$ and moment $d_2$ of the proton. This document summarizes the operation and performance of the polarized target, polarized electron beam, and novel detector systems used during the course of the experiment, and describes analysis techniques utilized to access the physics observables of interest.

   ↳ physics.ins-detnucl-exNucl.Instrum.Meth.A(2018)·9 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.