Search for the Standard Model Higgs boson decaying into bb produced in association with top quarks decaying hadronically in pp collisions at s = 8 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00465719" target="_blank" >RIV/68378271:_____/16:00465719 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/JHEP05(2016)160" target="_blank" >http://dx.doi.org/10.1007/JHEP05(2016)160</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP05(2016)160" target="_blank" >10.1007/JHEP05(2016)160</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for the Standard Model Higgs boson decaying into bb produced in association with top quarks decaying hadronically in pp collisions at s = 8 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A search for Higgs boson production in association with a pair of top quarks ( ttH ) is performed, where the Higgs boson decays to bb , and both top quarks decay hadronically. The data used correspond to an integrated luminosity of 20.3 fb1 of pp collisions at s=8 TeV collected with the ATLAS detector at the Large Hadron Collider. The search selects events with at least six energetic jets and uses a boosted decision tree algorithm to discriminate between signal and Standard Model background. The dominant multijet background is estimated using a dedicated data-driven technique. For a Higgs boson mass of 125 GeV, an upper limit of 6.4 (5.4) times the Standard Model cross section is observed (expected) at 95% confidence level. The best-fit value for the signal strength is μ = 1.6 2.6 times the Standard Model expectation for mH = 125 GeV. Combining all ttH searches carried out by ATLAS at s=8 and 7 TeV, an observed (expected) upper limit of 3.1 (1.4) times the Standard Model expectation is obtained at 95% confidence level, with a signal strength μ = 1.7 0.8n

Název v anglickém jazyce

Search for the Standard Model Higgs boson decaying into bb produced in association with top quarks decaying hadronically in pp collisions at s = 8 TeV with the ATLAS detector

Popis výsledku anglicky

A search for Higgs boson production in association with a pair of top quarks ( ttH ) is performed, where the Higgs boson decays to bb , and both top quarks decay hadronically. The data used correspond to an integrated luminosity of 20.3 fb1 of pp collisions at s=8 TeV collected with the ATLAS detector at the Large Hadron Collider. The search selects events with at least six energetic jets and uses a boosted decision tree algorithm to discriminate between signal and Standard Model background. The dominant multijet background is estimated using a dedicated data-driven technique. For a Higgs boson mass of 125 GeV, an upper limit of 6.4 (5.4) times the Standard Model cross section is observed (expected) at 95% confidence level. The best-fit value for the signal strength is μ = 1.6 2.6 times the Standard Model expectation for mH = 125 GeV. Combining all ttH searches carried out by ATLAS at s=8 and 7 TeV, an observed (expected) upper limit of 3.1 (1.4) times the Standard Model expectation is obtained at 95% confidence level, with a signal strength μ = 1.7 0.8n

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

—

Návaznosti

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

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

—

Svazek periodika

2016

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

53

Strana od-do

—

Kód UT WoS článku

000377602900001

EID výsledku v databázi Scopus

2-s2.0-84973664656