CERN Accelerating science

Preprints

Последно добавени:
2019-10-23
16:25
Searches for Light Higgs Bosons at the CMS Experiment / Kalogeropoulos, Alexis (Princeton U.) /CMS Collaboration
We report on recent results by the CMS Collaboration on searches for light Higgs bosons based on a sample of proton-proton collision data at $\sqrt{s} =13$ TeV, corresponding to a total integrated luminosity of 35.9 fb$^{-1}$..
CMS-CR-2019-098.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019

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2019-10-23
16:15
Rare top quark production in CMS ttZ, tZ, tgamma, and tttt production / Alvarez Gonzalez, Barbara (Oviedo U.) /CMS Collaboration
A comprehensive set of measurements of top quark pair and single top quark production in association with EWK bosons (Z or $\gamma$) is presented. The results are compared to theory predictions and re-interpreted as searches for new physics inducing deviations from the standard model predictions using an effective field theory approach. [...]
CMS-CR-2019-228.- Geneva : CERN, 2019 - 5 p. Fulltext: PDF;
In : 31st Recontres de Blois (Particle Physics and Cosmology), Blois, France, 2 - 7 Jun 2019

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2019-10-23
16:10
SEARCHES FOR DARK MATTER AT THE LHC / Tapper, Alexander (Imperial Coll., London) /ATLAS and CMS Collaborations
Astrophysical measurements show that around 85\% of the universe consists of dark matter, the origin of which is unknown. Dedicated experiments search for dark matter in the cosmos interacting directly and through annihilation [...]
CMS-CR-2019-210.- Geneva : CERN, 2019 - 9 p. Fulltext: PDF;
In : 31st Recontres de Blois (Particle Physics and Cosmology), Blois, France, 2 - 7 Jun 2019

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2019-10-23
15:59
Recent Results on Heavy Flavour from CMS / Chistov, Ruslan (Moscow Phys. Eng. Inst.) /CMS Collaboration
In this talk I report recent results on heavy flavor physics from pp collisions at CMS.It includes spectroscopy of open or hidden beauty hadrons from pp collision data at $\sqrt{s}=8$ and 13 TeV.These studies are aimed to gain new knowledge on the properties of beauty hadrons which enchance our understanding of QCD..
CMS-CR-2019-201.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF;
In : 18th International Conference on Strangeness in Quark Matter, Bari, Italy, 10 - 15 Jun 2019

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2019-10-23
05:04
Trans-Planckian Censorship and Inflation in Grand Unified Theories / Schmitz, Kai
The recently proposed trans-Planckian censorship conjecture (TCC) amounts to the claim that inflation models with an inflationary energy scale larger than Lambda_inf^max ~ 10^9 GeV belong to the swampland, i.e., cannot be embedded into a consistent theory of quantum gravity. [...]
CERN-TH-2019-171 ; arXiv:1910.08837.
- 7 p.
Fulltext

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2019-10-23
05:04
Secular effects of Ultralight Dark Matter on Binary Pulsars / Blas, Diego (King's Coll. London) ; López Nacir, Diana (Buenos Aires, CONICET) ; Sibiryakov, Sergey (CERN ; EPFL, Lausanne, LPPC ; Moscow, INR)
Dark matter (DM) can consist of very light bosons behaving as a classical scalar field that experiences coherent oscillations. [...]
arXiv:1910.08544 ; CERN-TH-2019-165 ; INR-TH-2019-018 ; KCL-PH-TH/2019-77.
- 24 p.
Fulltext

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2019-10-23
05:03
Measurement of neutrino and antineutrino neutral-current quasielastic-like interactions on oxygen by detecting nuclear de-excitation $\gamma$-rays / T2K Collaboration
Neutrino- and antineutrino-oxygen neutral-current quasielastic-like interactions are measured at Super-Kamiokande using nuclear de-excitation $\gamma$-rays to identify signal-like interactions in data from a $14.94 \ (16.35)\times 10^{20}$ protons-on-target exposure of the T2K neutrino (antineutrino) beam. [...]
arXiv:1910.09439.
- 18 p.
Fulltext

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2019-10-23
05:02
GEANT4 Parameter Tuning Using Professor / Elvira, V. (Fermilab) ; Fields, L. (Fermilab) ; Genser, K.L. (Fermilab) ; Hatcher, R. (Fermilab) ; Ivanchenko, V. (CERN ; Tomsk State U.) ; Kelsey, M. (SLAC) ; Koi, T. (SLAC) ; Perdue, G.N. (Fermilab) ; Ribon, A. (CERN) ; Uzhinsky, V. (CERN) et al.
The Geant4 toolkit is used extensively in high energy physics to simulate the passage of particles through matter and to predict effects such as detector efficiencies and smearing. [...]
arXiv:1910.06417 ; FERMILAB-PUB-19-526-SCD.
- 44 p.
Fulltext

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2019-10-22
16:33
Measurement of $f_s / f_u$ variation with proton-proton collision energy and kinematics
The ratio of the $B^0_s$ and $B^+$ fragmentation fractions $f_s$ and $f_u$ is studied with $B^0_s \to J/\psi \phi$ and $B^+ \to J/\psi K^+$ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8 and 13 TeV center-of-mass energies. [...]
CERN-EP-2019-209 ; arXiv:1910.09934 ; LHCB-PAPER-2019-020.
- 2019.
Fulltext - Related data file(s)

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2019-10-22
10:33
Search for standard model production of four top quarks / Fangmeier, Caleb Arthur (Nebraska U.) /CMS Collaboration
This talk describes efforts towards a first measurement of the standard model production of four top quarks with results based on up to the full Run 2 dataset. It includes implications of this measurement to constrain properties of the Higgs Boson and new physics scenarios including dark matter..
CMS-CR-2019-170.- Geneva : CERN, 2019 - 6 p. Fulltext: PDF;
In : 2019 Meeting of the Division of Particles & Fields of the American Physical Society, Boston, United States Of America, 29 Jul - 2 Aug 2019

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