Wed·Apr 11, 2018Wednesday·April 11, 2018

1. 01*

   Small systems at the LHC

   Roberto Preghenella🇮🇹

   In these proceedings, I report on a selection of recent LHC results in small systems from ALICE, ATLAS and CMS experiments. Due to the fact that the investigation of QCD in small systems at high multiplicity is becoming an increasingly large subject, interesting the heavy-ion community and more in general the high-energy physics community, not all the related topics can be discussed in this paper. The focus will be given to some of the measurements addressing the physics of collective phenomena in small systems and to the recent results on strangeness enhancement in proton-proton collisions. The reader must be informed that a large number of interesting results did not find space in the discussion reported here.

   ↳ hep-exnucl-exEPJ Web Conf.(2018)·8 citations
2. 02*

   Meson-exchange currents and quasielastic predictions for neutrino-nucleus scattering

   M.B. Barbaro🇮🇹 · J.E. Amaro🇪🇸 · J.A. Caballero🇪🇸 · A. De Pace🇮🇹 · T.W. Donnelly🇺🇸 · G.D. Megias🇪🇸 · I. Ruiz Simo🇪🇸

   We review some recent progress in the study of electroweak interactions in nuclei within the SuSAv2-MEC model. The model has the capability to predict (anti)neutrino scattering observables on different nuclei. The theoretical predictions are compared with the recent T2K ${\nu }_{\mu }{-}^{16}$O data and good agreement is found at all kinematics. The results are very similar to those obtained for ${\nu }_{\mu }{-}^{12}$C scattering, except at low energies, where some differences emerge. The role of meson-exchange currents in the two-particle two-hole channel is analyzed in some detail. In particular it is shown that the density dependence of these contributions is different from what is found for the quasielastic response.

   ↳ nucl-thhep-phnucl-exPoS(2017)·0 citations
3. 03*

   Energy Response of GECAM Gamma-Ray Detector Based on LaBr3:Ce and SiPM Array

   Da-Li Zhang · Xin-Qiao Li · Shao-Lin Xiong · Wen-xi Peng · Fan-Zhang · Yanguo-Li · Zheng-Hua An · Yan-Bing Xu · Xi-Lei Sun · Yue Zhu

   The Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) , composed of two small satellites, is a new mission to monitor the Gamma-Ray Bursts (GRBs) coincident with Gravitational Wave (GW) events with a FOV of 100% all-sky.Each GECAM satellite detects and localizes GRBs using 25 compact and novel Gamma-Ray Detectors (GRDs) in 6 keV-5 MeV. Each GRD module is comprised of LaBr3:Ce scintillator, SiPM array and preamplifier. A large dynamic range of GRD is achieved by the high gain and low gain channels of the preamplifier. The energy response of GRD prototype was evaluated using radioactive sources in the range of 5.9-1332.5 keV. A energy resolution of 5.3% at 662 keV was determined from the 137Cs pulse height spectra, which meets the GECAM requirement (< 8% at 662 keV). Energy to channel conversion was evaluated and a nonlinearity correction was performed to reduce the residuals (< 1.5%). Also, a Geant4-based simulated in-flight background and a measured GRD LaBr3:Ce intrinsic activity were used to evaluate the capability of in-flight calibration. These results demonstrate the design of GRD.

   ↳ physics.ins-detnucl-exNucl.Instrum.Meth.A(2019)·56 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.