Thu·Jun 9, 2016Thursday·June 9, 2016

1. 01*

   Anisotropic flow of Pb+Pb $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV from A Multi-Phase Transport Model

   Zhao Feng🇨🇳 · Guang-Ming Huang🇨🇳 · Feng Liu🇨🇳

   Anisotropic flow is an important observable in the study of the Quark-Gluon Plasma that is expected to be formed in heavy-ion collisions. With a multiphase transport (AMPT) model we investigate the elliptic(${\text{v}}_2$), triangular(${\text{v}}_3$), and quadrangular(${\text{v}}_4$) flow of charged particles in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV. Then We compare our flow results with the published ALICE flow results. We found our AMPT simulated results are consistent with ALICE experimental data.

   nucl-exCPC(2017)·7 citations
2. 02*

   Measurements of the Separated Longitudinal Structure Function F_L from Hydrogen and Deuterium Targets at Low Q^2

   V. Tvaskis · A. Tvaskis · I. Niculescu · D. Abbott🇺🇸 · G.S. Adams🇺🇸 · A. Afanasev🇺🇸 · A. Ahmidouch🇺🇸 · T. Angelescu🇷🇴 · J. Arrington🇺🇸 · R. Asaturyan🇯🇵 · S. Avery🇺🇸 · O.K. Baker🇺🇸 and 91 other authors

   Structure functions, as measured in lepton-nucleon scattering, have proven to be very useful in studying the quark dynamics within the nucleon. However, it is experimentally difficult to separately determine the longitudinal and transverse structure functions, and consequently there are substantially less data available for the longitudinal structure function in particular. Here we present separated structure functions for hydrogen and deuterium at low four--momentum transfer squared, Q^2< 1 GeV^2, and compare these with parton distribution parameterizations and a k_T factorization approach. While differences are found, the parameterizations generally agree with the data even at the very low Q^2 scale of the data. The deuterium data show a smaller longitudinal structure function, and smaller ratio of longitudinal to transverse cross section R, than the proton. This suggests either an unexpected difference in R for the proton and neutron or a suppression of the gluonic distribution in nuclei.

   nucl-exhep-exPRC(2018)·29 citations
3. 03*

   Avoiding common pitfalls and misconceptions in extractions of the proton radius

   Jan C. Bernauer🇺🇸 · Michael O. Distler🇩🇪

   In a series of recent publications, different authors produce a wide range of electron radii when reanalyzing electron proton scattering data. In the light of the proton radius puzzle, this is a most unfortunate situation. However, we find flaws in most analyses that result in radii around 0.84 fm. In this paper, we explain our reasoning and try to illustrate the most common pitfalls.

   ↳ nucl-thhep-phnucl-ex16 citations
4. 04*

   Using LHC Forward Proton Detectors to Tag Nuclear Debris

   Rafal Staszewski🇵🇱 · Janusz J. Chwastowski🇵🇱

   The forward proton detectors, already existing at the LHC, are considered in the context of heavy ion collisions. It is shown that such detectors have the potential to measure nuclear debris originating from spectator nucleons. The geometric acceptance for different nuclei is studied, and how it is affected by the motion of the nucleons in the nucleus and by the experimental conditions. A possibility of extending the acceptance region is discussed.

   ↳ physics.ins-dethep-exnucl-ex1 citation

* 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.