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Ultimi arrivi:
2023-12-08
04:35
Revisiting the averaged annihilation rate of thermal relics at low temperature
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Arbey, A.
;
Mahmoudi, N.F.
;
Palmiotto, M.
We derive a low-temperature expansion of the formula to compute the average annihilation rate $\langle \sigma v \rangle$ for dark matter in $\mathbb{Z}_2$-symmetric models, both in the absence and the presence of mass degeneracy in the spectrum near the dark matter candidate.
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CERN-TH-2023-232
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arXiv:2312.03695
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2023-12-07
20:10
Inclusive and differential cross-section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin-correlation interpretations
Measurements of both the inclusive and differential production cross sections of a top-quark--top-antiquark pair in association with a $Z$ boson ($t\bar{t}Z$) are presented.
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CERN-EP-2023-252
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- 2023.
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2023-12-07
04:28
Probing supermassive black hole seed scenarios with gravitational wave measurements
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Ellis, John
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Fairbairn, Malcolm
;
Urrutia, Juan
;
Vaskonen, Ville
The process whereby the supermassive black holes populating the centers of galaxies have been assembled remains to be established, with the relative importance of seeds provided by collapsed Population-III stars, black holes formed in nuclear star clusters via repeated mergers, or direct collapses of protogalactic disks yet to be determined.
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KCL-PH-TH/2023-69
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CERN-TH-2023-227
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arXiv:2312.02983
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- 7 p.
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2023-12-06
16:41
Measurement of jet substructure in boosted $t\bar{t}$ events with the ATLAS detector using 140 fb$^{-1}$ of 13 TeV $pp$ collisions
Measurements of the substructure of top-quark jets are presented, using 140 fb$^{-1}$ of 13 TeV $pp$ collision data recorded with the ATLAS detector at the LHC.
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CERN-EP-2023-239
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- 2023.
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2023-12-06
10:06
Search for short- and long-lived axion-like particles in $H\rightarrow a a \rightarrow 4\gamma$ decays with the ATLAS experiment at the LHC
/ ATLAS Collaboration
Presented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS experiment.
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arXiv:2312.03306
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CERN-EP-2023-202
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- 2023. - 43 p, 43 p.
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2023-12-06
09:40
Search for charged-lepton flavor violation in the production and decay of top quarks using trilepton final states in proton-proton collisions at $ \sqrt{s} = $ 13 TeV
/ CMS Collaboration
A search is performed for charged-lepton flavor violating processes in top quark (t) production and decay.
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arXiv:2312.03199
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CMS-TOP-22-005
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CERN-EP-2023-258
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CMS-TOP-22-005-003
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- 2023.
Additional information for the analysis
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CMS AuthorList
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2023-12-06
09:25
Measurement of the Z boson invisible width at $\sqrt{s}=13$ TeV with the ATLAS detector
/ ATLAS Collaboration
A measurement of the invisible width of the $Z$ boson using events with jets and missing transverse momentum is presented using 37 $\mbox{fb\(^{-1}\)}$ of 13 TeV proton-proton data collected by the ATLAS detector in 2015 and 2016.
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arXiv:2312.02789
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CERN-EP-2023-232
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- 2023. - 40 p.
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2023-12-06
04:33
Momentum scale calibration of the LHCb spectrometer
/ LHCb Collaboration
For accurate determination of particle masses accurate knowledge of the momentum scale of the detectors is crucial.
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arXiv:2312.01772
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CERN-EP-2023-275
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LHCb-DP-2023-003
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- 22 p.
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2023-12-06
04:32
Learning Feynman integrals from differential equations with neural networks
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Calisto, Francesco
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Moodie, Ryan
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Zoia, Simone
We present a new approach for evaluating Feynman integrals numerically.
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arXiv:2312.02067
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CERN-TH-2023-225
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- 27 p.
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2023-12-06
04:29
Strangeness production in double gap events in ALICE
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Schicker, R.
The ALICE detector at the LHC was upgraded in the long shutdown of 2019-2021 in order to take data at much-increased Run 3 and 4 rates.
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arXiv:2312.01485
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- 7 p.
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