# CERN Preprints

2016-06-22
15:10
 R and D towards future CMS RPC upgrades / Fagot, Alexis (Gent U.) /CMS Collaboration High pseudo-rapidity region of CMS muon system is covered only by Cathode Strip Chambers (CSC) and lacks redundant coverage despite the fact that it is a challenging region for muons in terms of backgrounds and momentum resolution. In order to maintain good efficiency for the muon trigger in this region additional RPC are planned to be installed in stations RE31 and RE41. [...] CMS-CR-2016-120.- Geneva : CERN, 2016 - 13 p. Fulltext: PDF; In : 13th Workshop on Resistive Plate Chambers and Related Detectors, Ghent, Belgium, 22 - 26 Feb 2016

2016-06-22
15:10
 Preliminary Cluster Size and Efficiencies results of CMS RPC at GIF++ / Gonzalez Blanco Gonzalez, Genoveva (Iberoamericana U.) /CMS Collaboration A brief description and first preliminary results of the Efficiencies and Cluster Size measurements of the CMS Resistive Plate Chambers, will be presented inside the Gamma Irradiation Facility GIF++ at CERN. Preliminary studies that sets the base performance measurements of CMS RPC for starting aging studies.. CMS-CR-2016-119.- Geneva : CERN, 2016 - 8 p. Fulltext: PDF; In : 13th Workshop on Resistive Plate Chambers and Related Detectors, Ghent, Belgium, 22 - 26 Feb 2016

2016-06-22
15:10
 Dark matter searches with CMS / Jeitler, Manfred (Vienna, OAW) /CMS Collaboration The existence of dark matter, indicated by astronomical observations, is one of the main proofs of physics beyond the standard model. Despite its abundance, dark matter has not been directly observed yet. [...] CMS-CR-2016-108.- Geneva : CERN, 2016 - 4 p. Fulltext: PDF; In : LHCSki2016: A First Discussion of 13 TeV Results, Obergurgl, Austria, 10 - 15 Apr 2016

2016-06-22
15:10
 V+jets from CMS / Zhang, Fengwangdong (Brussels U.) /CMS Collaboration This document is dedicated to recent results on the measurements of a vector boson production associated with jets (V+jets) using CMS detector experiment, with a central proton-proton (pp) collision energy of respectively 8 TeV (RunI) and 13 TeV (RunII). The vector boson can be a W boson, Z boson, or photon. [...] CMS-CR-2016-103.- Geneva : CERN, 2016 - 8 p. Fulltext: PDF; In : 24th International Workshop on Deep Inelastic Scattering and related subjects, Hamburg, Germany, 11 - 15 Apr 2016

2016-06-22
15:09
 Associative Memory pattern matching for L1 track trigger for the HL-LHC CMS / Fedi, Giacomo (INFN, Pisa) /CMS Collaboration The High Luminosity LHC (HL-LHC) will deliver luminosities of up to $5 \times 10^{34}$ Hz/cm$^2$, with an average of about 140 overlapping proton-proton collisions per bunch crossing. These extreme pileup conditions place stringent requirements on the trigger system to be able to cope with the resulting event rates. [...] CMS-CR-2016-102.- Geneva : CERN, 2016 - 8 p. Fulltext: PDF; In : Connecting the Dots, Vienna, Austria, 22 - 24 Feb 2016

2016-06-21
07:43
 Long-distance singularities in multi-leg scattering amplitudes / Gardi, Einan ; Almelid, Øyvind ; Duhr, Claude We report on the recent completion of the three-loop calculation of the soft anomalous dimension in massless gauge-theory scattering amplitudes. [...] arXiv:1606.05697 ; EDINBURGH 2016-10 ; CERN-TH-2016-141 ; CP3-16-31. - 2016. - 15 p. Preprint - Full text

2016-06-21
07:41
 Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for $\pi^{\pm}$, $\mathrm{K}^{\pm}$ and p+$\overline{\mathrm{p}}$ in Pb-Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV were measured with the ALICE detector at the Large Hadron Collider. [...] arXiv:1606.06057 ; CERN-EP-2016-159. - 2016. - 40 p. Preprint - Full text

2016-06-20
22:37
 Evidence for collectivity in pp collisions at the LHC / CMS Collaboration Measurements of two- and multi-particle angular correlations in pp collisions at $\sqrt{s} =$ 5, 7, and 13 TeV are presented as a function of charged-particle multiplicity. [...] CERN-EP-2016-147 ; CMS-HIN-16-010-003 ; arXiv:1606.06198. - 2016. Additional information for the analysis - CMS AuthorList - Full text - Full text

2016-06-20
07:47
 Indefinite theta series and generalized error functions / Alexandrov, Sergei ; Banerjee, Sibasish ; Manschot, Jan ; Pioline, Boris Theta series for lattices with indefinite signature $(n_+,n_-)$ arise in many areas of mathematics including representation theory and enumerative algebraic geometry. [...] arXiv:1606.05495 ; L2C:16-078 ; IPHT-T16-058 ; CERN-TH-2016-142. - 2016. - 30 p. Preprint - Full text

2016-06-19
15:49
 Measurement of the transverse momentum spectra of weak vector bosons produced in proton-proton collisions at $\sqrt{s} =$ 8 TeV / CMS Collaboration The transverse momentum spectra of weak vector bosons are measured in the CMS experiment at the LHC. [...] CERN-EP-2016-152 ; CMS-SMP-14-012-003 ; arXiv:1606.05864. - 2016. Additional information for the analysis - CMS AuthorList - Full text - Full text