CERN Accelerating science

CERN Preprints

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2014-09-20
11:26
Measurement of the production cross section ratio $\sigma(\chi_{b2}(1\mathrm{P}))/ \sigma(\chi_{b1}(1\mathrm{P}))$ in pp collisions at $\sqrt{s}$ = 8 TeV
A measurement of the production cross section ratio $\sigma(\chi_{b2}(1\mathrm{P}))/ \sigma(\chi_{b1}(1\mathrm{P}))$ is presented. [...]
CERN-PH-EP-2014-217 ; CMS-BPH-13-005-003.
- 2014.
Additional information for the analysis - CMS AuthorList - Fulltext

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2014-09-19
08:20
Diffraction, forward physics and soft QCD results from the CMS experiment / Ciesielski, Robert Adam (Rockefeller U.) /CMS Collaboration
We report on the recent CMS measurements of soft hadron-hadron production, including the measurements of inclusive single- and double- diffractive cross sections, as well as the measurement of pseudorapidity distributions, and of the leading charged particle and leading jet cross sections. We present the cross sections for low-pT forward jets production, and production of dijets with large rapidity separation (central-forward, and forward-backward jets). [...]
CMS-CR-2014-225.- Geneva : CERN, 2014 - 7 p. Fulltext: PDF;
In : 1st Large Hadron Collider Physics Conference, Barcelona, Spain, 13 - 18 May 2013

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2014-09-19
08:20
Top Quark Mass Measurements at the LHC / Stieger, Benjamin Bastian (CERN) /ATLAS and CMS Collaborations
We present an overview of top quark mass measurements performed with the ATLAS and CMS detectors at the LHC, using datasets of proton-proton collisions recorded in 2011 and 2012 at sqrt(s) = 7 TeV and sqrt(s) = 8 TeV. The presented analyses comprise standard template measurements in the single-lepton, di-lepton, and all-hadronic channels, as well as alternative techniques for measuring the top mass..
CMS-CR-2014-221.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF;
In : 26th Rencontres de Blois on Particle Physics and Cosmology, Blois, France, 18 - 23 May 2014

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2014-09-19
08:17
Search for SUSY with razor variables at CMS / Duarte, Javier Mauricio (Caltech) /CMS Collaboration
We discuss a search for natural Supersymmetry using razor variables in ppcollisions at $\sqrt{s}=8$ TeV with the CMS detector. The 95\pctC.L. [...]
CMS-CR-2014-220.- Geneva : CERN, 2014 - 6 p. Fulltext: PDF;
In : 1st Large Hadron Collider Physics Conference, Barcelona, Spain, 13 - 18 May 2013

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2014-09-19
08:17
Quarkonium production in pp collisions with the CMS detector / Pompili, Alexis (INFN, Bari ; Bari U.) /CMS Collaboration
The studies of the inclusive production of heavy quarkonium states at LHC are very important to improve our understanding of QCD and hadron formation, given that the heavy-quark masses allow the application of theoretical tools less sensitive to nonperturbative effects. The prompt cross sections and polarizations measured by CMS and the other LHC experiments are presented for the five S-wave states $J/\psi$, $\psi(2S)$ and $\Upsilon(nS)$ ($n=1,2,3$) and discussed especially in comparison to the theoretical predictions provided by Non Relativistic QCD..
CMS-CR-2014-218.- Geneva : CERN, 2014 - 7 p. Fulltext: PDF;
In : QCD@Work, 7th International Workshop on QCD, theory and experiment, Giovinazzo, Bari, Italy, 16 - 19 Jun 2014

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2014-09-19
08:16
Observation of Structures in the J/�?�? Mass Spectrum at CMS / Albayrak, Elif Asli (Bogazici U.) /CMS Collaboration
In this talk we will report the recent studies of exotic hadrons performed at CMS. The focus will be on the Y(4140) structure which is observed by several experiments in the J/�?�? invariant mass spectrum..
CMS-CR-2014-209.- Geneva : CERN, 2014 - 6 p. Fulltext: PDF;
In : IVth International Conference on Hadron Physics TROIA'14 , Canakkale, Turkey, 1 - 5 Jul 2014

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2014-09-19
08:16
Quarkonium production measurements and searches for exotic quarkonia at CMS / Kratschmer, Ilse (Vienna, OAW) /CMS Collaboration
The CMS experiment at the LHC studies conventional and exotic quarkonia. CMS measured the quarkonium polarization of prompt $\Psi$(nS) and $\Upsilon$(nS) states, using 2011 data taken in pp collisions at $\sqrt{s} = 7$~TeV. [...]
CMS-CR-2014-200.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF;
In : 11th International Conference on Hyperons, Charm and Beauty Hadrons, Birmingham, United Kingdom, 21 - 26 Jul 2014

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2014-09-19
08:16
Performance of muon-based triggers at the CMS High Level Trigger / Alimena, Juliette (Brown U.) /CMS Collaboration
The trigger systems of the LHC detectors play a crucial role in determining the physics capabilities of the experiments. A reduction of several orders of magnitude of the event rate is needed to reach values compatible with the detector readout, offline storage and analysis capabilities. [...]
CMS-CR-2014-198.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF;
In : 1st Large Hadron Collider Physics Conference, Barcelona, Spain, 13 - 18 May 2013

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2014-09-19
08:16
Measurements of heavy flavor properties at ATLAS and CMS / Kratschmer, Ilse (Vienna, OAW) /ATLAS and CMS Collaborations
The ATLAS and CMS experiments at the LHC have a rich program in heavy flavor physics and cover a variety of topics in this field. This paper presents the following recent results: The measurement of the parity-violating decay asymmetry parameter $\alpha_{b}$ in $\Lambda_{b}^0$ decays conducted by ATLAS; studies of the $B_{c}^{\pm}$ meson performed by ATLAS and CMS; and the determination of quarkonium polarization by CMS. [...]
CMS-CR-2014-197.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF;
In : 26th Rencontres de Blois on Particle Physics and Cosmology, Blois, France, 18 - 23 May 2014

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2014-09-19
08:15
Higgs production in association with bottom quarks / Wiesemann, M ; Frederix, R ; Frixione, S ; Hirschi, V ; Maltoni, F ; Torrielli, P
We study the production of a Higgs boson in association with bottom quarks in hadronic collisions, and present phenomenological predictions relevant to the 13 TeV LHC. [...]
arXiv:1409.5301 ; CERN-PH-TH-2014-182 ; CP3-14-64 ; LPN14-114 ; MCNET-14-20 ; ZU-TH 33-14.
- 2014. - 33 p.
Preprint - Full text

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