Search for heavy Majorana neutrinos in e±e± and e±μ± final states via WW scattering in pp collisions at √s=13 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00598598" target="_blank" >RIV/68378271:_____/24:00598598 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/24:00377476 RIV/68407700:21240/24:00377476 RIV/68407700:21340/24:00377476 RIV/68407700:21670/24:00377476 RIV/61989592:15310/24:73628715

Výsledek na webu

<a href="https://hdl.handle.net/11104/0356210" target="_blank" >https://hdl.handle.net/11104/0356210</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2024.138865" target="_blank" >10.1016/j.physletb.2024.138865</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for heavy Majorana neutrinos in e±e± and e±μ± final states via WW scattering in pp collisions at √s=13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A search for heavy Majorana neutrinos in scattering of same-sign W boson pairs in proton–proton collisions at √s=13 TeV at the LHC is reported. The dataset used corresponds to an integrated luminosity of 140 fb−1, collected with the ATLAS detector during 2015–2018. The search is performed in final states including a same-sign ee or eμ pair and at least two jets with large invariant mass and a large rapidity difference. No significant excess of events with respect to the Standard Model background predictions is observed. The results are interpreted in a benchmark scenario of the Phenomenological Type-I Seesaw model. New constraints are set on the values of the |VeN|2 and |VeNVμN⁎| parameters for heavy Majorana neutrino masses between 50 GeV and 20 TeV, where VℓN is the matrix element describing the mixing of the heavy Majorana neutrino mass eigenstate with the Standard Model neutrino of flavour ℓ=e,μ.

Název v anglickém jazyce

Search for heavy Majorana neutrinos in e±e± and e±μ± final states via WW scattering in pp collisions at √s=13 TeV with the ATLAS detector

Popis výsledku anglicky

A search for heavy Majorana neutrinos in scattering of same-sign W boson pairs in proton–proton collisions at √s=13 TeV at the LHC is reported. The dataset used corresponds to an integrated luminosity of 140 fb−1, collected with the ATLAS detector during 2015–2018. The search is performed in final states including a same-sign ee or eμ pair and at least two jets with large invariant mass and a large rapidity difference. No significant excess of events with respect to the Standard Model background predictions is observed. The results are interpreted in a benchmark scenario of the Phenomenological Type-I Seesaw model. New constraints are set on the values of the |VeN|2 and |VeNVμN⁎| parameters for heavy Majorana neutrino masses between 50 GeV and 20 TeV, where VℓN is the matrix element describing the mixing of the heavy Majorana neutrino mass eigenstate with the Standard Model neutrino of flavour ℓ=e,μ.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

856

Číslo periodika v rámci svazku

Sept

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

24

Strana od-do

138865

Kód UT WoS článku

001381570200001

EID výsledku v databázi Scopus

2-s2.0-85195170275