Wed·May 6, 2015Wednesday·May 6, 2015

1. 01*

   Neutrino-production of a charmed meson and the transverse spin structure of the nucleon

   B. Pire🇫🇷 · L. Szymanowski🇵🇱

   We calculate the amplitude for exclusive neutrino production of a charmed meson on an unpolarized target, in the colinear QCD approach where generalized parton distributions (GPDs) factorize from perturbatively calculable coefficient functions. We demonstrate that the transversity chiral odd GPDs contribute to the transverse cross section if the hard amplitude is calculated up to order mc/Q. We show how to access these GPDs through the azimuthal dependence of the nu N -> mu D N differential cross section.

   ↳ hep-phhep-exnucl-exnucl-thPRL(2015)·36 citations
2. 02*

   Collectivity in high-multiplicity events of proton-proton collisions in the framework of String Percolation

   I. Bautista🇲🇽 · A. Fernandez Tellez🇲🇽 · Premomoy Ghosh🇮🇳

   We analyze high multiplicity proton-proton ($pp$) collision data at the energies $\sqrt{s}=900$ GeV, $2.76$ TeV and $7$ TeV in the framework of the String Percolation Model (SPM) in terms of the ratio of shear viscosity and entropy density ($\eta /s$) showing that the model allows the formation of strongly interacting collective medium in the high energy and high multiplicity events in p-p collisions.

   ↳ hep-phnucl-exnucl-th4 citations
3. 03*

   Design and Performance of the Data Acquisition System for the NA61/SHINE Experiment at CERN

   Andras Laszlo🇭🇺 · Ervin Denes🇭🇺 · Zoltan Fodor🇭🇺 · Tivadar Kiss🇭🇺 · Stuart Kleinfelder🇺🇸 · Csaba Soos🇨🇭 · Dariusz Tefelski🇵🇱 · Tamas Tolyhi🇭🇺 · Gyorgy Vesztergombi🇭🇺 · Oskar Wyszynski🇵🇱

   This paper describes the hardware, firmware and software systems used in data acquisition for the NA61/SHINE experiment at the CERN SPS accelerator. Special emphasis is given to the design parameters of the readout electronics for the 40m^3 volume Time Projection Chamber detectors, as these give the largest contribution to event data among all the subdetectors: events consisting of 8bit ADC values from 256 timeslices of 200k electronic channels are to be read out with ~100Hz rate. The data acquisition system is organized in "push-data mode", i.e. local systems transmit data asynchronously. Techniques of solving subevent synchronization are also discussed.

   ↳ physics.ins-dethep-exnucl-exNucl.Instrum.Meth.A(2015)·11 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.