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CERN Document Server 2,019 records found  1 - 10nextend  jump to record: Search took 0.22 seconds. 
1.
(100)
Baryon Asymmetry of the Universe from Lepton Flavor Violation / Mukaida, Kyohei (KEK, Tsukuba ; Sokendai, Tsukuba) ; Schmitz, Kai (CERN) ; Yamada, Masaki (Tohoku U., Astron. Inst. ; Tohoku U.)
Charged-lepton flavor violation (CLFV) is a smoking-gun signature of physics beyond the Standard Model. The discovery of CLFV in upcoming experiments would indicate that CLFV processes must have been efficient in the early Universe at relatively low temperatures. [...]
arXiv:2111.03082; KEK-TH-2364; CERN-TH-2021-183; TU-1137.- 2022-06-28 - 10 p. - Published in : Phys. Rev. Lett. 129 (2022) 011803 Fulltext: PDF; Fulltext from publisher: PDF;
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2.
(89)
New Constraint on Primordial Lepton Flavor Asymmetries / Domcke, Valerie (CERN ; EPFL, Lausanne, LPPC) ; Kamada, Kohei (Tokyo U., RESCEU) ; Mukaida, Kyohei (KEK, Tsukuba ; Sokendai, Tsukuba) ; Schmitz, Kai (Munster U.) ; Yamada, Masaki (Tohoku U., Astron. Inst. ; Tohoku U.)
A chiral chemical potential present in the early universe can source helical hypermagnetic fields through the chiral plasma instability. If these hypermagnetic fields survive until the electroweak phase transition, they source a contribution to the baryon asymmetry of the universe. [...]
arXiv:2208.03237; CERN-TH-2022-134; RESCEU-13/22; KEK-TH-2441; MS-TP-22-23; TU-1164.- 2023-06-30 - 7 p. - Published in : Phys. Rev. Lett. 130 (2023) 261803 Fulltext: 2208.03237 - PDF; Publication - PDF;
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[YSF] Lepton flavor violation in the top quark sector / Li, Jingyan (Northeastern U.) /CMS Collaboration
This document describes a search for charged-lepton flavor violation (CLFV) in the production and decay of top quarks using 138 fb$^{-1}$ of data collected by the CMS experiment at a center-of-mass energy of 13 TeV. Events are selected for analysis if they contain an opposite-sign electron-muon pair, a third charged lepton (electron or muon), at least one jet, and at most one jet associated with a bottom quark. [...]
arXiv:2312.06040; CMS-CR-2023-053.- Geneva : CERN, 2023 - 4 p. Fulltext: 2312.06040 - PDF; CR2023_053 - PDF;
In : 57th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 18 - 25 Mar 2023
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Wash-in leptogenesis after axion inflation / Domcke, Valerie (CERN) ; Kamada, Kohei (Tokyo U., RESCEU) ; Mukaida, Kyohei (KEK, Tsukuba ; Sokendai, Tsukuba) ; Schmitz, Kai (CERN ; Munster U.) ; Yamada, Masaki (Tohoku U. ; Tohoku U., Astron. Inst.)
CP violation and the violation of baryon-minus-lepton number B-L do not necessarily have to occur simultaneously in order to accomplish successful leptogenesis. Instead, it suffices if new CP-violating interactions at high energies result in primordial charge asymmetries, which are then reprocessed into a nonvanishing B-L asymmetry by right-handed neutrinos (RHNs) at lower energies. [...]
arXiv:2210.06412; CERN-TH-2022-162; RESCEU-17/22; KEK-TH-2455; MS-TP-22-37; TU-1170.- 2023-01-12 - 56 p. - Published in : JHEP 2301 (2023) 053 Fulltext: 2210.06412 - PDF; document - PDF;
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CMS-PHO-EVENTS-2022-002
© 2022 CERN, for the benefit of the CMS Collaboration 		Displays of a candidate in a search for CLFV in top quark production and decay
This is an event seen in the CMS detector from a s [...]
25/01/2022
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Search for charged lepton flavor violation in top quark interaction with an up-type quark, a muon, and a $\tau$ lepton with the CMS experiment / Park, Jiwon (DESY) /CMS Collaboration
A search for charged-lepton flavor violation (CLFV) in top quark (t) interactions is presented. Proton-proton collision data collected with the CMS experiment corresponding to an integrated luminosity of 138 fb$^{-1}$ are used. The analysis selects events containing a single muon, a hadronically decaying $\tau$ lepton, and three jets where one has been identified to originate from the fragmentation of a bottom quark. Machine learning multiclass classification techniques are used to distinguish signal from standard model background events. The results of this search are consistent with the standard model expectations. The upper limits at 95\% confidence level on the branching fraction $\mathcal{B}$ for CLFV top quark decays to a muon, a $\tau$ lepton, and an up or a charm quark are $\mathcal{B}(\mathrm{t} \to \mu\tau\mathrm{u}) < (0.04$, $0.078$, and $0.118) \times 10^{-6}$, and $\mathcal{B}(\mathrm{t} \to \mu\tau\mathrm{c}) < (0.81$, $1.71$, and $2.05) \times 10^{-6}$ for scalar, vector, and tensor-like operators, respectively..
CMS-CR-2024-249.- Geneva : CERN, 2024 - 5 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024
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The 3rd International Conference on Charged Lepton Flavor Violation - cLFV 2019   17 - 19 Jun 2019  - Fukuoka, Japan  .-
2019
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8.
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Lepton Universality and cLFV at LHCb / Frau, Giulia (Heidelberg University (DE))
LHCb-TALK-2023-154.- Geneva : CERN, 2023 Fulltext: PDF; In : CLFV2023: The 4th International Conference on Charged Lepton Flavor Violation
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9.
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Search for lepton flavour violation in top quark interactions with an up-type quark, a muon, and a tau lepton /CMS Collaboration
We present a search for charged-lepton flavour violation (CLFV) in the top quark (t) sector using $138~\mathrm{fb}^{-1}$ of proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of $13~\mathrm{TeV}$. The analysis focuses on events containing a single muon ($\mu$) and a hadronically decaying $\tau$ lepton. [...]
CMS-PAS-TOP-22-011.- Geneva : CERN, 2024 Figure_001-a: PDF; Figure_001-b: PDF; Figure_001-c: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_002-c: PDF; Figure_002-d: PDF; Figure_003-a: PDF; Figure_003-b: PDF; Figure_003-c: PDF; Figure_004-a: PDF; Figure_004-b: PDF; Figure_005-a: PDF; Figure_005-b: PDF; Fulltext in PDF: PDF; External link: Additional information for the analysis (restricted access)
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Searches for FCNC and lepton flavour violating interactions of the top quark with the ATLAS detector / Bartos, Pavol (Comenius University (SK))
The LHC is a top quark factory and provides a unique opportunity to look for flavour changing neutral current or charged-lepton flavour violating interactions of the top quark. [...]
arXiv:2401.08182 ; ATL-PHYS-PROC-2024-006. - 2024. - 5 p.
Original Communication (restricted to ATLAS) - Full text - Fulltext
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