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CERN Accelerating science

Published Articles

Letzte Einträge:
2021-04-17
04:01
Mechanism of Indirect Photon-induced Desorption at the Water Ice Surface / Dupuy, R. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Bertin, M. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Féraud, G. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Michaut, X. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Marie-Jeanne, P. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Jeseck, P. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Philippe, L. (Paris U., IV ; Paris Observ. ; U. PSL ; LERMA, Ivry) ; Baglin, V. (CERN) ; Cimino, R. (LNF, Dafne Light) ; Romanzin, C. (U. Paris-Sud 11, Dept. Phys., Orsay ; U. Paris-Saclay) et al.
Electronic excitations near the surface of water ice lead to the desorption of adsorbed molecules, through a so far debated mechanism. A systematic study of photon-induced indirect desorption, revealed by the spectral dependence of the desorption (7 to 13 eV), is conducted for Ar, Kr, N$_{2}$, and CO adsorbed on H$_{2}$O or D$_{2}$O amorphous ices. [...]
arXiv:2104.05567.- 2021-04-12 - Published in : Phys. Rev. Lett. 126 (2021) 156001 Fulltext: PDF;

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2021-04-17
04:01
Search for $Z'$ pair production from scalar boson decay in minimal $U(1)_{L_\mu - L_\tau }$ model at the LHC / Nomura, Takaaki (Sichuan U.) ; Shimomura, Takashi (Miyazaki U.)
We consider a model with gauged $L_\mu - L_\tau$ symmetry in which the symmetry is spontaneously broken by a scalar field. The decay of the scalar boson into two new gauge bosons is studied as a direct consequence of the spontaneous symmetry breaking. [...]
arXiv:2012.13049; CTP-SCU/2020041; UME-PP-016.- 2021-04-09 - 13 p. - Published in : Eur. Phys. J. C 81 (2021) 297 Article from SCOAP3: PDF; Fulltext: PDF;

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2021-04-17
04:01
Light Higgs searches in $ t\overline{t}\phi $ production at the LHC / Azevedo, Duarte (Lisbon U.) ; Capucha, Rodrigo (Lisbon U.) ; Gouveia, Emanuel (LIP, Minho) ; Onofre, António (Minho U.) ; Santos, Rui (Lisbon U. ; Lisbon, ISEL)
In this paper we propose a new reconstruction method to explore the low mass region in the associated production of top-quark pairs ($t\bar{t}$) with a generic scalar boson ($\phi$) at the LHC. The new method of mass reconstruction shows an improved resolution of at least a factor of two in the low mass region when compared to previous methods, without the loss of sensitivity of previous analyses. [...]
arXiv:2012.10730.- 2021-04-09 - 23 p. - Published in : JHEP 2104 (2021) 077 Article from SCOAP3: PDF; Fulltext: PDF;

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2021-04-17
04:01
Particle collisions near static spherically symmetric black holes / Hackmann, Eva (Bremen U., ZARM) ; Nandan, Hemwati (Gurukula Kangri U., Haridwar ; UCT-CERN Res. Ctr.) ; Sheoran, Pankaj (IFM-UMSNH, Michoacan)
It has been shown by Ba\~{n}ados, Silk and West (BSW) that the center of mass energy (E_cm) of test particles starting from rest at infinity and colliding near the horizon of a Schwarzschild black hole is always finite. In this communication, we extent the BSW scenario and study two particles with different energies colliding near the horizon of a static spherically symmetric black hole. [...]
arXiv:2006.05045.- 2020-11-10 - Published in : Phys. Lett. B 810 (2020) 135850 Article from SCOAP3: PDF; Fulltext: PDF;

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2021-04-16
13:18
Gating of charge sensitive preamplifiers for the use at pulsed radiation sources. / Urlass, Sebastian (HZDR) ; Junghans, Arnd (HZDR) ; Mingrone, Federica (CERN) ; Peronnard, Paul (CERN) ; Stach, Daniel (HZDR) ; Tassan-Got, Laurent (CNRS/IN2P3 IJCLab) ; Weinberger, David (HZDR) /n_TOF Collaboration
The development of a switch circuit to gate charge sensitive preamplifiers for use at pulsed radiation sources will be presented. This development was used for the $^{16}$O(n,$\alpha$)$^{13}$C reaction measurement with a Double Frisch Grid Ionization Chamber (DFGIC) at the neutron time-of-flight facility CERN n_TOF in Geneva, Switzerland. [...]
Geneva : CERN, 2021 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res. A

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2021-04-16
06:03
Higgs to WW measurements with CMS / Di Croce, Davide (Antwerp U.)
The measurement of the Higgs boson decay to a W boson pair with an integrated luminosity of 35.9 fb$\rm{^{-1}}$ collected by the CMS experiment at the LHC at 13 TeV center of mass energy is presented. The results led to the observation of the Higgs boson decay to WW with more than 5 standard deviations for the first time at CMS, providing a significant contribution to the current fit of the Higgs boson couplings to fermions and vector bosons..
SISSA, 2020 - 5 p. - Published in : PoS EPS-HEP2019 (2020) 364
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.364

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2021-04-16
06:03
Search for 2HDM neutral Higgs bosons through the process H $\rightarrow$ ZA $\rightarrow \ell^+ \ell^-b\overline{b}$ with the CMS detector / Saggio, Alessia (Louvain U., CP3) /CMS Collaboration
The inability of the standard model (SM) to explain some observed phenomena motivates theoretical models featuring an extension of the SM scalar sector that predict additional Higgs bosons. The Two-Higgs-doublet model (2HDM) is one of these. [...]
SISSA, 2019 - 6 p. - Published in : PoS EPS-HEP2019 (2020) 361
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.361

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2021-04-16
06:03
Measurement of cross sections in Higgs boson decays to four leptons with the ATLAS detector / Oda, Susumu (Kyushu U.) /ATLAS Collaboration
Higgs boson decays to four leptons can be selected with a very high purity and are very well suited for measurements of Higgs boson properties, despite the small branching fraction. Measurements of differential cross sections and cross sections of different Higgs boson production processes in the simplified template cross section framework using proton-proton collision data produced at the Large Hadron Collider at a center of mass energy of $13$ TeV and recorded by the ATLAS detector from 2015 to 2018 are presented..
SISSA, 2019 - 7 p. - Published in : PoS EPS-HEP2019 (2020) 354
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.354

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2021-04-16
06:03
Higgs Boson Measurements at the HL-LHC with CMS / Das, Pallabi (Tata Inst.) /CMS Collaboration
The measurements of the properties of the Higgs boson at the LHC experiments have entered the precision era, however, some channels are still dominated by statistical uncertainties. A larger data sample is required to ensure whether the observed resonance completely agrees with the Standard Model (SM) predictions, or belongs to a new physics scenario. [...]
SISSA, 2019 - 9 p. - Published in : PoS EPS-HEP2019 (2020) 348
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.348

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2021-04-13
06:01
Implementation of the ATLAS-SUSY-2018-32 analysis (sleptons and electroweakinos with two leptons and missing transverse energy; 139 fb$^{−1}$) / Araz, Jack Y (Durham U., IPPP) ; Fuks, Benjamin (Paris, LPTHE ; Inst. U. de France)
We present the implementation in MadAnalysis 5 of the ATLAS-SUSY-2018-32 search for new physics and document the validation of this re-implementation. This analysis targets, with 139 fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector, the electroweak pair production of supersymmetric charginos and sleptons when they further decay into a final state comprising a pair of leptons and missing energy. [...]
2020 - 12 p. - Published in : Mod. Phys. Lett. A 36 (2021) 2141005
In : 2nd MadAnalysis 5 workshop on LHC recasting in Korea, Seoul, Korea, Republic of, 13 - 20 Feb 2020, pp.2141005

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