Search for top squarks in final states with one isolated lepton,jets, and missing transverse momentum in root s= 13 TeV pp collisions with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10335993" target="_blank" >RIV/00216208:11320/16:10335993 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/16:33161579 RIV/68407700:21220/16:00309878 RIV/68407700:21340/16:00309878 RIV/68407700:21670/16:00309878

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevD.94.052009" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.94.052009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.94.052009" target="_blank" >10.1103/PhysRevD.94.052009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for top squarks in final states with one isolated lepton,jets, and missing transverse momentum in root s= 13 TeV pp collisions with the ATLAS detector

Popis výsledku v původním jazyce

The results of a search for the top squark, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, jets, and missing transverse momentum are reported. The search uses the 2015 LHC pp collision data at a center-of-mass energy of ffiffiffi sp 1/4 13 TeV recorded by the ATLAS detector and corresponding to an integrated luminosity of 3.2 fbMINUS SIGN 1. The analysis targets two types of signal models: gluino-mediated pair production of top squarks with a nearly mass-degenerate top squark and neutralino and direct pair production of top squarks, decaying to the top quark and the lightest neutralino. The experimental signature in both signal scenarios is similar to that of a top quark pair produced in association with large missing transverse momentum. No significant excess over the Standard Model background prediction is observed, and exclusion limits on gluino and top squark masses are set at 95% confidence level. The results extend the LHC run-1 exclusion limit on the gluino mass up to 1460 GeV in the gluino-mediated scenario in the high gluino and low top squark mass region and add an excluded top squark mass region from 745 to 780 GeV for the direct top squark model with a massless lightest neutralino. The results are also reinterpreted to set exclusion limits in a model of vectorlike top quarks.

Název v anglickém jazyce

Search for top squarks in final states with one isolated lepton,jets, and missing transverse momentum in root s= 13 TeV pp collisions with the ATLAS detector

Popis výsledku anglicky

The results of a search for the top squark, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, jets, and missing transverse momentum are reported. The search uses the 2015 LHC pp collision data at a center-of-mass energy of ffiffiffi sp 1/4 13 TeV recorded by the ATLAS detector and corresponding to an integrated luminosity of 3.2 fbMINUS SIGN 1. The analysis targets two types of signal models: gluino-mediated pair production of top squarks with a nearly mass-degenerate top squark and neutralino and direct pair production of top squarks, decaying to the top quark and the lightest neutralino. The experimental signature in both signal scenarios is similar to that of a top quark pair produced in association with large missing transverse momentum. No significant excess over the Standard Model background prediction is observed, and exclusion limits on gluino and top squark masses are set at 95% confidence level. The results extend the LHC run-1 exclusion limit on the gluino mass up to 1460 GeV in the gluino-mediated scenario in the high gluino and low top squark mass region and add an excluded top squark mass region from 745 to 780 GeV for the direct top squark model with a massless lightest neutralino. The results are also reinterpreted to set exclusion limits in a model of vectorlike top quarks.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW D

ISSN

2470-0010

e-ISSN

—

Svazek periodika

94

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

32

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-84993869024