CERN Accelerating science

Preprints

Ultimi arrivi:
2018-07-19
16:45
A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment
This paper describes a strategy for a general search used by the ATLAS Collaboration to find potential indications of new physics. [...]
CERN-EP-2018-070.
- 2018.
Fulltext - Previous draft version

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2018-07-18
20:42
Search for dark matter particles produced in association with a top quark pair at $\sqrt{s} = $ 13 TeV
A search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at $\sqrt{s} = $ 13 TeV. [...]
CERN-EP-2018-183 ; arXiv:1807.06522 ; CMS-EXO-16-049-003.
- 2018.
Additional information for the analysis - CMS AuthorList - Fulltext

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2018-07-18
10:00
Search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to p \pi^-$ decays
A search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to p \pi^-$ decays is presented using a sample of $pp$ collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb$^{-1}$. [...]
CERN-EP-2018-189 ; LHCB-PAPER-2018-025.
- 2018.
Fulltext - Related data file(s) - Supplementary Information

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2018-07-18
05:30
Robust Constraint on Lorentz Violation Using Fermi-LAT Gamma-Ray Burst Data / Ellis, John (King's Coll. London ; CERN) ; Konoplich, Rostislav (New York U. (main) ; Manhattan Coll., Riverdale) ; Mavromatos, Nikolaos E. (King's Coll. London ; U. Valencia (main)) ; Nguyen, Linh (Manhattan Coll., Riverdale) ; Sakharov, Alexander S. (New York U. (main) ; Manhattan Coll., Riverdale ; CERN) ; Sarkisyan-Grinbaum, Edward K. (CERN ; Texas U., Arlington (main))
Models of quantum gravity suggest that the vacuum should be regarded as a medium with quantum structure that may have non-trivial effects on photon propagation, including the violation of Lorentz invariance. [...]
arXiv:1807.00189.
- 38 p.
Fulltext

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2018-07-18
05:29
Topology classification with deep learning to improve real-time event selection at the LHC / Nguyen, Thong Q. (Caltech) ; Weitekamp, Daniel (UC, Berkeley) ; Anderson, Dustin (Caltech) ; Castello, Roberto (CERN) ; Cerri, Olmo (Caltech) ; Pierini, Maurizio (CERN) ; Spiropulu, Maria (Caltech) ; Vlimant, Jean-Roch (Caltech)
We show how event topology classification based on deep learning could be used to improve the purity of data samples selected in real time at at the Large Hadron Collider. [...]
arXiv:1807.00083.
- 15 p.
Full text

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2018-07-18
05:29
Sterile Neutrinos with Secret Interactions -- Cosmological Discord? / Chu, Xiaoyong (Vienna, OAW) ; Dasgupta, Basudeb (Tata Inst.) ; Dentler, Mona (Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Kopp, Joachim (Mainz U., Inst. Phys. ; U. Mainz, PRISMA ; CERN) ; Saviano, Ninetta (Mainz U., Inst. Phys. ; U. Mainz, PRISMA)
Several long-standing anomalies from short-baseline neutrino oscillation experiments -- most recently corroborated by new data from MiniBooNE -- have led to the hypothesis that extra, 'sterile', neutrino species might exist. [...]
15 p.
Full text

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2018-07-17
17:40
Search for lepton-flavor violation in different-flavor, high-mass final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
A search is performed for a heavy particle decaying into different-flavor, dilepton pairs ($e\mu$, $e\tau$ or $\mu\tau$), using 36.1 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV collected in 2015-2016 by the ATLAS detector at the Large Hadron Collider. [...]
CERN-EP-2018-137.
- 2018.
Fulltext - Previous draft version

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2018-07-17
14:06
Search for the Higgs boson decaying to two muons in proton-proton collisions at $\sqrt{s} = $ 13 TeV
A search for the Higgs boson decaying to two oppositely charged muons is presented using data recorded by the CMS experiment at the CERN LHC in 2016 at a center-of-mass energy $\sqrt{s} = $ 13 TeV, corresponding to an integrated luminosity of 35.9 fb$^{-1}$. [...]
CERN-EP-2018-165 ; CMS-HIG-17-019-003.
- 2018.
Additional information for the analysis - CMS AuthorList - Fulltext

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2018-07-17
10:43
Search and measurement of the SM Higgs boson / Donato, Silvio (Zurich U.) /ATLAS and CMS Collaborations
After the success of the LHC Run-1 physics program, the ATLAS and CMS Collaborations have presented their results obtained with the first $\sim 36\,\textnormal{fb}^{-1}$ of integrated luminosity delivered by the LHC at $\sqrt{s} = 13\,\textnormal{TeV}$ in Run-2. We present the main results obtained on the Standard Model Higgs boson, including the searches for specific decay and production channels, and the measurements of the Higgs boson couplings and differential cross section..
CMS-CR-2018-114.- Geneva : CERN, 2018 - 10 p. Fulltext: PDF;
In : XXXII Rencontres de Physique de La Vallée d'Aoste, La Thuile(ao), Italy, 25 Feb - 3 Mar 2018

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2018-07-17
09:40
Measurements of the differential jet cross section as a function of the jet mass in dijet events from proton-proton collisions at $\sqrt{s} = $ 13 TeV
Measurements of the differential jet cross section are presented as a function of jet mass in dijet events, in bins of jet transverse momentum, with and without a jet grooming algorithm. [...]
CERN-EP-2018-180 ; CMS-SMP-16-010-003.
- 2018.
Additional information for the analysis - CMS AuthorList - Fulltext

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