CERN Accelerating science

CERN Preprints

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2016-08-22
17:00
Central exclusive production of $J/\psi$ and $\psi(2S)$ mesons in pp collisions at $\sqrt{s}=13$ TeV /LHCb Collaboration
A measurement is made of the central exclusive production of $J/\psi$ and $\psi(2S)$ mesons in $pp$ collisions at a centre-of-mass energy of 13 TeV. Backgrounds are significantly reduced compared to previous measurements made at lower energies through the use of new forward shower counters [...]
LHCb-CONF-2016-007; CERN-LHCb-CONF-2016-007.- Geneva : CERN, 2016 - 16. Fulltext: lhcb_conf_2016_007 - PDF; LHCb-CONF-2016-007 - ZIP;
In : 38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016

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2016-08-22
16:52
in preparation /LHCb Collaboration
in preparation
LHCb-CONF-2016-006; CERN-LHCb-CONF-2016-006.- Geneva : CERN, 2016

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2016-08-22
14:54
Interpretation of Wire-Scanner asymmetric profiles in a Low-Energy ring / Cieslak-Kowalska, Magdalena Anna (Ecole Polytechnique Federale de Lausanne (CH)) ; Benedetto, Elena (CERN)
In the CERN PS Booster, wire-scanner profile measurements performed at injection energy are affected by a strong asymmetry [...]
CERN-ACC-2016-0109.
- 2016. - 6 p.
Full text

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2016-08-22
14:42
Space Charge effects and mitigation in the CERN PS Booster, in view of the Upgrade / Benedetto, Elena (CERN) ; Cieslak-Kowalska, Magdalena Anna (Ecole Polytechnique Federale de Lausanne (CH)) ; Forte, Vincenzo (CERN) ; Schmidt, Frank (CERN)
The CERN PS Booster (PSB) is presently running with a space charge tune spread larger than 0.5 at injection [...]
CERN-ACC-2016-0108.
- 2016. - 7 p.
Full text

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2016-08-22
09:18
The CMS Fast Beams Condition Monitor Backend Electronics based on MicroTCA technology / Zagozdzinska, Agnieszka Anna (CERN) /CMS Collaboration
The Fast Beams Condition Monitor (BCM1F), upgraded for LHC Run II, is one sub-system of the Beam Radiation Instrumentation and Luminosity Project of the CMS experiment. It is based on 24 single crystal CVD diamond sensors. [...]
CMS-CR-2015-315.- Geneva : CERN, 2015 - 8 p. Fulltext: PDF;
In : 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, San Diego, CA, USA, 31 Oct - 7 Nov 2015

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2016-08-22
09:17
Instrumentation for beam radiation and luminosity measurement in the CMS experiment using novel detector technologies / Guthoff, Moritz (CERN) /CMS Collaboration
The higher energy and luminosity of the LHC initiated the development of dedicated technologies for radiation monitoring and luminosity measurement. A pixelated luminosity detector counts coincidences in several three layer telescopes of silicon pixel detectors to measure the luminosity for each colliding LHC bunch pair. [...]
CMS-CR-2016-034.- Geneva : CERN, 2016 - 6 p. Fulltext: PDF;
In : 14th Vienna Conference on Instrumentation, Vienna, Austria, 15 - 19 Feb 2016

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2016-08-19
08:23
The Super-GUT CMSSM Revisited / Ellis, John ; Evans, Jason L ; Mustafayev, Azar ; Nagata, Natsumi ; Olive, Keith A
We revisit minimal supersymmetric SU(5) grand unification (GUT) models in which the soft supersymmetry-breaking parameters of the minimal supersymmetric Standard Model (MSSM) are universal at some input scale, $M_{in}$, above the supersymmetric gauge coupling unification scale, $M_{GUT}$. [...]
arXiv:1608.05370 ; KCL-PH-TH-2016-52 ; CERN-PH-TH-2016-185 ; KIAS-P16059 ; UMN-TH-3601-16 ; FTPI-MINN-16-23.
- 2016. - 29 p.
Preprint - Full text

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2016-08-19
08:23
Two-loop scale-invariant scalar potential and quantum effective operators / Ghilencea, D M ; Lalak, Z ; Olszewski, P
Spontaneous breaking of quantum scale invariance may provide a solution to the hierarchy and cosmological constant problems. [...]
arXiv:1608.05336 ; CERN-PH-TH-2016-186.
- 2016. - 20 p.
Preprint - Full text

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2016-08-19
08:22
Measurement of the CP-violating phase and decay-width difference in $B_s^0\to\psi(2S)\phi$ decays / LHCb collaboration
A time-dependent angular analysis of $B_s^0\to\psi(2S)\phi$ decays is performed using data recorded by the LHCb experiment. [...]
arXiv:1608.04855 ; CERN-EP-2016-192 ; LHCB-PAPER-2016-027.
- 2016.
Preprint - Full text

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2016-08-18
16:42
CMS upgrade plans and potential / Belloni, Alberto (Maryland U.) /CMS Collaboration
upgrade !
CMS-CR-2016-183.- Geneva : CERN, 2016 - 11 p. Fulltext: PDF;
In : 4th Conference on Large Hadron Collider Physics 2016 (LHCP 2016), Lund, Sweden, 13 - 18 Jun 2016

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