Search for high mass dijet resonances with a new background prediction method 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%2F20%3A10424329" target="_blank" >RIV/00216208:11320/20:10424329 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=5gaDjgCSC~" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=5gaDjgCSC~</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP05(2020)033" target="_blank" >10.1007/JHEP05(2020)033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at root s=13 TeV

Popis výsledku v původním jazyce

A search for narrow and broad resonances with masses greater than 1.8TeV decaying to a pair of jets is presented. The search uses proton-proton collision data at root s = 13TeV collected at the LHC, corresponding to an integrated luminosity of 137 fb(-1). The background arising from standard model processes is predicted with the fit method used in previous publications and with a new method. The dijet invariant mass spectrum is well described by both data-driven methods, and no significant evidence for the production of new particles is observed. Model independent upper limits are reported on the production cross sections of narrow resonances, and broad resonances with widths up to 55% of the resonance mass. Limits are presented on the masses of narrow resonances from various models: string resonances, scalar diquarks, axigluons, colorons, excited quarks, color-octet scalars, W&apos; and Z&apos; bosons, Randall-Sundrum gravitons, and dark matter mediators. The limits on narrow resonances are improved by 200 to 800 GeV relative to those reported in previous CMS dijet resonance searches. The limits on dark matter mediators are presented as a function of the resonance mass and width, and on the associated coupling strength as a function of the mediator mass. These limits exclude at 95% confidence level a dark matter mediator with a mass of 1.8TeV and width 1% of its mass or higher, up to one with a mass of 4.8TeV and a width 45% of its mass or higher.

Název v anglickém jazyce

Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at root s=13 TeV

Popis výsledku anglicky

A search for narrow and broad resonances with masses greater than 1.8TeV decaying to a pair of jets is presented. The search uses proton-proton collision data at root s = 13TeV collected at the LHC, corresponding to an integrated luminosity of 137 fb(-1). The background arising from standard model processes is predicted with the fit method used in previous publications and with a new method. The dijet invariant mass spectrum is well described by both data-driven methods, and no significant evidence for the production of new particles is observed. Model independent upper limits are reported on the production cross sections of narrow resonances, and broad resonances with widths up to 55% of the resonance mass. Limits are presented on the masses of narrow resonances from various models: string resonances, scalar diquarks, axigluons, colorons, excited quarks, color-octet scalars, W&apos; and Z&apos; bosons, Randall-Sundrum gravitons, and dark matter mediators. The limits on narrow resonances are improved by 200 to 800 GeV relative to those reported in previous CMS dijet resonance searches. The limits on dark matter mediators are presented as a function of the resonance mass and width, and on the associated coupling strength as a function of the mediator mass. These limits exclude at 95% confidence level a dark matter mediator with a mass of 1.8TeV and width 1% of its mass or higher, up to one with a mass of 4.8TeV and a width 45% of its mass or higher.

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

2020

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

2020

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

45

Strana od-do

033

Kód UT WoS článku

000613068100001

EID výsledku v databázi Scopus

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