# CERN Preprints

Najnovije dodano:
2016-08-24
08:11
 Measurement of $CP$ violation in $B^0 \!\rightarrow D^+ D^-$ decays / LHCb collaboration The $C\!P$ violation observables $S$ and $C$ in the decay channel $B^0 \!\rightarrow D^+ D^-$ are determined from a sample of proton-proton collisions at centre-of-mass energies of $7$ and $8$ TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of $3~ {\text {fb}}^{-1}$. [...] arXiv:1608.06620 ; CERN-EP-2016-203 ; LHCB-PAPER-2016-037. - 2016. Preprint - Full text - Related data file(s)

2016-08-24
08:09
 Glauber theory and the quantum coherence of curvature inhomogeneities / Giovannini, Massimo The curvature inhomogeneities are systematically scrutinized in the framework of the Glauber approach. [...] arXiv:1608.05843 ; CERN-TH-2016-181. - 2016. - 35 p. Preprint - Full text

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

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

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

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

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

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

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

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