# CERN Preprints

2016-10-24
17:32
 Determination of the spacial coordinates of fiducial marks on the 1975 2 meter hydrogen bubble chamber front window / Knudson, K CERN-D-Ph-II-200-75-1. - 1975.

2016-10-24
13:49
 Some thoughts on the stacking efficiency of the Storage Ring / Hereward, H G CERN-PS-Int-AR-60-33. - 1960. - 26 p. Full text

2016-10-24
11:33
 Measurement of the $ZZ$ production cross section in proton--proton collisions at $\mathbf{\sqrt{s} = 8 TeV}$ using the $ZZ\to\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $ZZ\to\ell^{-}\ell^{+}\nu\bar{\nu}$ decay channels with the ATLAS detector A measurement of the $ZZ$ production in the $\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $\ell^{-}\ell^{+}\nu\bar{\nu}$ channels $(\ell = e, \mu)$ in proton--proton collisions at $\sqrt{s} = 8$ TeV at the Large Hadron Collider at CERN, using data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ collected by the ATLAS experiment in 2012 is presented. [...] CERN-EP-2016-194. - 2016. Fulltext - Previous draft version

2016-10-24
07:21
 Exact $\nabla^4 R^4$ couplings and helicity supertraces / Bossard, Guillaume (U. Paris-Saclay) ; Pioline, Boris (Paris, LPTHE ; CERN) In type II string theory compactified on a $d$-dimensional torus $T^d$ down to $D=10-d$ dimensions, the $R^4$ and $\nabla^4 R^4$ four-graviton couplings are known exactly, for all values of the moduli, in terms of certain Eisenstein series of the U-duality group $E_{d}(\mathbb{Z})$. [...] arXiv:1610.06693 ; CERN-TH-2016-224 ; CPHT-RR046.102016. - 2016. - 40 p. Preprint - Full text

2016-10-22
23:11
 Observation of $\Upsilon(\mathrm{1S})$ pair production in proton-proton collisions at $\sqrt{s} =$ 8 TeV Pair production of $\Upsilon(\mathrm{1S})$ mesons is observed at the LHC in proton-proton collisions at $\sqrt{s} =$ 8 TeV by the CMS experiment in a data sample corresponding to an integrated luminosity of 20.7 fb$^{-1}$. [...] CERN-EP-2016-237 ; CMS-BPH-14-008-003. - 2016. Additional information for the analysis - CMS AuthorList - Fulltext

2016-10-22
07:28

2016-10-20
15:52
 The Phase1 CMS Pixel detector upgrade / Tavolaro, Vittorio Raoul (Zurich, ETH) /CMS Collaboration The pixel detector of the CMS experiment will be replaced in an extended end-of-year shutdown during winter 2016/2017 with an upgraded one able to cope with peak instantaneous luminosities beyond the nominal LHC instantaneous luminosity of $1 \times 10^{34}$ cm$^{-2}$ s$^{-1}$. Under the conditions expected in the coming years, which will see an increase of a factor two in instantaneous luminosity, the present system would experience a dynamic inefficiency caused mainly by data losses due to buffer overflows. [...] CMS-CR-2016-249.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF; In : International Workshop on Semiconductor Pixel Detectors for Particles and Imaging (PIXEL2016), Sestri Levante, Italy, 5 - 9 Sep 2016

2016-10-20
15:49
 Measurements of Higgs boson production and properties in the WW decay channel using the CMS detector / Massironi, Andrea (Northeastern U.) /CMS Collaboration A summary of the CMS results in the study of the Higgs boson decaying to W boson pairs is presented.. CMS-CR-2016-259.- Geneva : CERN, 2016 - 6 p. Fulltext: PDF; In : 38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016

2016-10-20
15:49
 Diphoton searches (CMS) / Quittnat, Milena Eleonore (Zurich, ETH) /CMS Collaboration Many physics scenarios beyond the standard model predict the existence of heavy resonances decaying to diphotons. This talk presents searches for BSM physics in the diphoton final state at CMS, focusing on the recent results.. CMS-CR-2016-251.- Geneva : CERN, 2016 - 13 p. Fulltext: PDF; In : 5th International Conference on New Frontiers in Physics, Kolymbari, Greece, 6 - 14 Jul 2016

2016-10-20
15:47
 Higgs boson parameters and decays into fermions / Bluj, Michal Jacek (NCBJ, Swierk) /ATLAS and CMS Collaborations In 2012 the discovery of a new boson with a mass of about 125 GeV and properties in agreement with those expected for the Higgs boson in the standard model was announced. In this note we review the results of searches for the fermionic decays the Higgs boson and the study of its properties performed with the proton-proton collision data recorded by the ATLAS and CMS detectors at the LHC in 2011 and 2012, corresponding to an integrated luminosity of approximately 5~fb$^{-1}$ and approximately 20~fb$^{-1}$ per experiment at $\sqrt{s}=7$~TeV and $\sqrt{s}=8$~TeV, respectively. [...] CMS-CR-2016-246.- Geneva : CERN, 2016 - 9 p. Fulltext: PDF; In : 28th Rencontres de Blois Particle Physics and Cosmology, Blois, France, 29 May - 3 Jun 2016