Fri·Jun 23, 2017Friday·June 23, 2017

1. 01*

   Prompt and nonprompt J/$\psi$ production and nuclear modification in $p$Pb collisions at $\sqrt{s_{\text{NN}}}=8.16$ TeV

   LHCb collaboration: R. Aaij🇨🇭 · B. Adeva🇪🇸 · M. Adinolfi🇬🇧 · Z. Ajaltouni🇫🇷 · S. Akar🇺🇸 · J. Albrecht🇩🇪 · F. Alessio🇨🇭 · M. Alexander🇬🇧 · A. Alfonso Albero🇪🇸 · S. Ali🇳🇱 · G. Alkhazov🇷🇺 · P. Alvarez Cartelle🇬🇧 and 798 other authors

   The production of J/$\psi$ mesons is studied in proton-lead collisions at the centre-of-mass energy per nucleon pair $\sqrt{s_{\text{NN}}}=8.16$ TeV with the LHCb detector at the LHC. The double differential cross-sections of prompt and nonprompt J/$\psi$ production are measured as functions of the J/$\psi$ transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame. Forward-to-backward ratios and nuclear modification factors are determined. The results are compared with theoretical calculations based on collinear factorisation using nuclear parton distribution functions, on the colour glass condensate or on coherent energy loss models.

   ↳ hep-exnucl-exPLB(2017)·135 citations
2. 02*

   Regge phenomenology in ${\pi }^0$ and $\eta$ photoproduction

   V. L. Kashevarov🇩🇪 · M. Ostrick🇩🇪 · L. Tiator🇩🇪

   The $\gamma N\to {\pi }^{0}N$ and $\gamma N\to \eta N$ reactions at photon beam energies above 4 GeV are investigated within Regge models. The models include $t$-channel exchanges of vector ($\rho$ and $\omega$) and axial vector ($b_1$ and $h_1$) mesons. Moreover, Regge cuts of $\rho \mathbb{P}$, $\rho f_2$, $\omega \mathbb{P}$, and $\omega f_2$ are investigated. A good description of differential cross sections and polarization observables at photon beam energies from 4 to 15 GeV can be achieved.

   ↳ hep-phnucl-exnucl-thPRC(2017)·27 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.