Search for single productio no vector-like quarks decaying to a Z boson and a top or a bottom 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%2F17%3A10367775" target="_blank" >RIV/00216208:11320/17:10367775 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP05(2017)029" target="_blank" >http://dx.doi.org/10.1007/JHEP05(2017)029</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP05(2017)029" target="_blank" >10.1007/JHEP05(2017)029</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for single productio no vector-like quarks decaying to a Z boson and a top or a bottom quark in proton-proton collisions at root s=13 TeV

Popis výsledku v původním jazyce

A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at root s = 13TeV, corresponding to an integrated luminosity of 2.3 fb(-1). An exotic T quark production mode through the decay of a heavy Z&apos; resonance is also considered. The search is performed in events with a Z boson decaying leptonically, accompanied by a bottom or a top quark decaying hadronically. No excess of events is observed over the standard model background expectation. Products of production cross section and branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded at 95% confidence level for the range of resonance mass considered, which is between 0.7 and 1.7TeV. Limits on the product of the Z 0 boson production cross section and branching fraction, with the Z&apos; boson decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z&apos; boson masses in the range from 1.5 to 2.5 TeV. This is the first search at 13TeV for single production of vector-like quarks in events with a Z boson decaying leptonically accompanied by boosted jets.

Název v anglickém jazyce

Search for single productio no vector-like quarks decaying to a Z boson and a top or a bottom quark in proton-proton collisions at root s=13 TeV

Popis výsledku anglicky

A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at root s = 13TeV, corresponding to an integrated luminosity of 2.3 fb(-1). An exotic T quark production mode through the decay of a heavy Z&apos; resonance is also considered. The search is performed in events with a Z boson decaying leptonically, accompanied by a bottom or a top quark decaying hadronically. No excess of events is observed over the standard model background expectation. Products of production cross section and branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded at 95% confidence level for the range of resonance mass considered, which is between 0.7 and 1.7TeV. Limits on the product of the Z 0 boson production cross section and branching fraction, with the Z&apos; boson decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z&apos; boson masses in the range from 1.5 to 2.5 TeV. This is the first search at 13TeV for single production of vector-like quarks in events with a Z boson decaying leptonically accompanied by boosted jets.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics [online]

ISSN

1029-8479

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

37

Strana od-do

—

Kód UT WoS článku

000401073500003

EID výsledku v databázi Scopus

—