# Preprints

Derniers ajouts:
2017-10-22
19:14
 Measurement of differential cross sections in the $\phi^*$ variable for inclusive $\mathrm{Z}$ boson production in pp collisions at $\sqrt{s} =$ 8 TeV Measurements of differential cross sections ${\mathrm{d}}\sigma / {\mathrm{d}}\phi^*$ and double-differential cross sections ${\mathrm{d}}^2\sigma / {\mathrm{d}}\phi^*{\mathrm{d}}{|y|}$ for inclusive Z boson production are presented using the dielectron and dimuon final states. [...] CERN-EP-2017-234 ; CMS-SMP-17-002-003. - 2017. Additional information for the analysis - CMS AuthorList - Fulltext

2017-10-22
14:26
 Pseudorapidity and transverse momentum dependence of flow harmonics in pPb and PbPb collisionsDifferential flow harmonics v_n in pPb and PbPb collisions Measurements of azimuthal angular correlations are presented for high-multiplicity pPb collisions at $\sqrt{s_{\mathrm{NN}}} =$ 5.02 TeV and peripheral PbPb collisions at $\sqrt{s_{\mathrm{NN}}} =$ 2.76 TeV. [...] CERN-EP-2017-218 ; CMS-HIN-15-008-003. - 2017. Additional information for the analysis - CMS AuthorList - Fulltext

2017-10-21
07:17
 General heat kernel coefficients for massless free spin-3/2 Rarita-Schwinger field / Karan, Sudip (Indian Sch. Mines, Dhanbad) ; Kumar, Shashank (Indian Sch. Mines, Dhanbad) ; Panda, Binata (Indian Sch. Mines, Dhanbad ; Bhubaneswar, Inst. Phys. ; CERN ; Bhubaneswar, Inst. Phys. ; CERN ; Bhubaneswar, Inst. Phys. ; CERN ; Bhubaneswar, Inst. Phys. ; CERN) We review the general heat kernel method for the Dirac spinor field as an elementary example in any arbitrary background. [...] arXiv:1709.08063. - 21 p. Preprint

2017-10-21
07:17
 NLO and off-shell effects in top quark mass determinations / Heinrich, G. (Munich, Max Planck Inst.) ; Maier, Andreas (CERN) ; Nisius, Richard (Munich, Max Planck Inst.) ; Schlenk, Johannes (Durham U., IPPP) ; Schulze, Markus (Humboldt U., Berlin) ; Scyboz, Ludovic (Munich, Max Planck Inst.) ; Winter, Jan (Michigan State U.) We study the impact of different theoretical descriptions of top quark pair production on top quark mass measurements in the di-lepton channel [...] MPP-2017-197 ; IPPP-17-69 ; HU-EP-17-22 ; MSUHEP-170922 ; arXiv:1709.08615. - 33 p. Preprint

2017-10-20
16:53
 Functional Tests of 2S Modules for the CMS Phase-2 Tracker Upgrade with a microTCA-based Readout System / Preuten, Marius (Aachen, Tech. Hochsch.) /CMS Collaboration First full size 2S module prototypes for the CMS Phase-2 Tracker Upgrade have been assembled. With two sensors with realistic geometries and 16 CBC2 readout chips on two front-end hybrids these allow to study the characteristics of these complex objects.A microTCA based readout system was developed to test multiple front-end hybrids simultaneously. [...] CMS-CR-2017-367.- Geneva : CERN, 2017 - 8 p. Fulltext: PDF; In : Topical Workshop on Electronics for Particle Physics, Santa Cruz, Ca, United States Of America, 11 - 14 Sep 2017

2017-10-20
16:53
 Design of the new front-end electronics for the readout of the upgraded CMS electromagnetic calorimeter for the HL-LHC / Cometti, Simona (INFN, Turin) ; Mazza, Gianni (INFN, Turin) /CMS Collaboration The Compact Muon Solenoid detector was originally designed to operate for about ten years, for LHC instantaneous luminosities up to $1 \cdot 10^{34}$ cm$^{-2}$ s$^{-1}$ and integrated luminosity of 500 fb$^{-1}$. The High Luminosity LHC will increase the instantaneous luminosity by about a factor of 5 from current levels and CMS will accumulate an integrated luminosity of 3000 fb$^{-1}$ by about 2035. With such high luminosity the electromagnetic calorimeter of CMS will have to cope with a challenging increase in the number of interactions per bunch crossing and in radiation levels. [...] CMS-CR-2017-352.- Geneva : CERN, 2017 - 6 p. Fulltext: PDF; In : Topical Workshop on Electronics for Particle Physics, Santa Cruz, Ca, United States Of America, 11 - 14 Sep 2017

2017-10-20
16:53
 The CMS trigger in Run 2 / Tosi, Mia (CERN) /CMS Collaboration During its second period of operation (Run 2) which started in 2015, the LHC will reach a peak instantaneous luminosity of approximately 2$\times 10^{34}$~cm$^{-2}s^{-1}$ with an average pile-up of about 55, far larger than the design value. Under these conditions, the online event selection is a very challenging task. [...] CMS-CR-2017-340.- Geneva : CERN, 2017 - 7 p. Fulltext: PDF; In : 2017 European Physical Society Conference on High Energy Physics, Venice, Italy, 05 - 12 Jul 2017

2017-10-20
16:53
 Precision measurements of electroweak parameters / Savin, Alexander (Wisconsin U., Madison) /ATLAS and CMS Collaborations A set of selected precise measurements of the SM parameters from the LHC experiments is discussed. Results on W-mass measurement and forward-backward asymmetry in production of the Drell--Yan events in both dielectron and dimuon decay channels are presented together with results on the effective mixing angle measurements. [...] CMS-CR-2017-336.- Geneva : CERN, 2017 - 9 p. Fulltext: PDF; In : 37th International Symposium on Physics in Collision (PIC 2017), Prague, Czech Republic, 4 - 8 Sep 2017

2017-10-20
16:53
 The CMS ECAL Upgrade for Precision Crystal Calorimetry at the HL-LHC / Jofrehei, Arash (IPM, Tehran) /CMS Collaboration The Compact Muon Solenoid Experiment (CMS) is operating at the Large Hadron Collider (LHC) with proton-proton collisions at 13 TeV center-of-mass energy and at a bunch spacing of 25 ns. Challenging running conditions for CMS are expected after the High-Luminosity upgrade of the LHC (HL-LHC). [...] CMS-CR-2017-324.- Geneva : CERN, 2017 - 4 p. Fulltext: PDF; In : 14th International Conference on Inorganic Scintillators and their Applications, Chamonix, France, 18 - 22 Sep 2017

2017-10-20
07:41
 A Lower Bound on Inelasticity in Pion-Pion Scattering / Martin, André ; Roy, S.M. Assuming that the pion-pion scattering amplitude and its absorptive part are analytic inside an ellipse in $t$- plane with foci $t=0$, $u=0$ and right extremity $t=4 m_{\pi}^2 +\epsilon$, ($\epsilon > 0$), except for cuts prescribed by Mandelstam representation for $t\geq 4 m_{\pi}^2$, $u\geq 4 m_{\pi}^2$ , and bounded by $s^N$ on the boundary of this domain, we prove that for $s\rightarrow \infty$, \sigma_{inel} (s) > \frac{Const}{s^{5/2} }\exp {[-\frac{\sqrt{s}}{4} (N+5/2) \ln {s} ]}.. CERN-TH-2017-215 ; arXiv:1710.07140. - 10 p. Preprint

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