Search for single production of a vector- like T quark decaying to a Z boson and a top quark in proton-proton collisions at root s=13 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10377355" target="_blank" >RIV/00216208:11320/18:10377355 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21670/18:00330007

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2018.04.036" target="_blank" >https://doi.org/10.1016/j.physletb.2018.04.036</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2018.04.036" target="_blank" >10.1016/j.physletb.2018.04.036</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for single production of a vector- like T quark decaying to a Z boson and a top quark in proton-proton collisions at root s=13 TeV

Popis výsledku v původním jazyce

A search is presented for single production of a vector-like quark (T) decaying to a Z boson and a top quark, with the Z boson decaying leptonically and the top quark decaying hadronically. The search uses data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). The presence of forward jets is a particular characteristic of single production of vector-like quarks that is used in the analysis. For the first time, different T quark width hypotheses are studied, from negligibly small to 30% of the new particle mass. At the 95% confidence level, the product of cross section and branching fraction is excluded above values in the range 0.26-0.04 pb for T quark masses in the range 0.7-1.7 TeV, assuming a negligible width. A similar sensitivity is observed for widths of up to 30% of the T quark mass. The production of a heavy Z&apos; boson decaying to Tt, with T -&gt; tZ, is also searched for, and limits on the product of cross section and branching fractions for this process are set between 0.13 and 0.06pbfor Z&apos; boson masses in the range from 1.5 to 2.5 TeV. (C) 2018 The Author(s). Published by Elsevier B.V.

Název v anglickém jazyce

Search for single production of a vector- like T quark decaying to a Z boson and a top quark in proton-proton collisions at root s=13 TeV

Popis výsledku anglicky

A search is presented for single production of a vector-like quark (T) decaying to a Z boson and a top quark, with the Z boson decaying leptonically and the top quark decaying hadronically. The search uses data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). The presence of forward jets is a particular characteristic of single production of vector-like quarks that is used in the analysis. For the first time, different T quark width hypotheses are studied, from negligibly small to 30% of the new particle mass. At the 95% confidence level, the product of cross section and branching fraction is excluded above values in the range 0.26-0.04 pb for T quark masses in the range 0.7-1.7 TeV, assuming a negligible width. A similar sensitivity is observed for widths of up to 30% of the T quark mass. The production of a heavy Z&apos; boson decaying to Tt, with T -&gt; tZ, is also searched for, and limits on the product of cross section and branching fractions for this process are set between 0.13 and 0.06pbfor Z&apos; boson masses in the range from 1.5 to 2.5 TeV. (C) 2018 The Author(s). Published by Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

<a href="/cs/project/LG14004" target="_blank" >LG14004: Spolupráce ČR s SÚJV Dubna v teoretické a jaderné fyzice a při využití jaderných metod v dalších oborech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

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

—

Svazek periodika

781

Číslo periodika v rámci svazku

2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

27

Strana od-do

574-600

Kód UT WoS článku

000435653100073

EID výsledku v databázi Scopus

2-s2.0-85046377478