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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10493830" target="_blank" >RIV/00216208:11320/24:10493830 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.TB.gP2QYy" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.TB.gP2QYy</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 ????±????± and ????±????± final states via WW scattering in ???????? collisions at √???? = 13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A search for heavy Majorana neutrinos in scattering of same-sign ???? boson pairs in proton-proton collisions at SQUARE ROOT???? = 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 ???????? or ???????? 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 |????????????|2 and |???????????????? ASTERISK OPERATOR????????| parameters for heavy Majorana neutrino masses between 50 GeV and 20 TeV, where ????????????is the matrix element describing the mixing of the heavy Majorana neutrino mass eigenstate with the Standard Model neutrino of flavour ???? = ????, ????. The sensitivity to the Weinberg operator is investigated and constraints on the effective ???????? and ???????? Majorana neutrino masses are reported.

Název v anglickém jazyce

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

Popis výsledku anglicky

A search for heavy Majorana neutrinos in scattering of same-sign ???? boson pairs in proton-proton collisions at SQUARE ROOT???? = 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 ???????? or ???????? 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 |????????????|2 and |???????????????? ASTERISK OPERATOR????????| parameters for heavy Majorana neutrino masses between 50 GeV and 20 TeV, where ????????????is the matrix element describing the mixing of the heavy Majorana neutrino mass eigenstate with the Standard Model neutrino of flavour ???? = ????, ????. The sensitivity to the Weinberg operator is investigated and constraints on the effective ???????? and ???????? Majorana neutrino masses are reported.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

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, Section B: Nuclear, Elementary Particle and High-Energy Physics

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

856

Číslo periodika v rámci svazku

SEP

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