Improved reconstruction of highly boosted τ -lepton pairs in the ττ RIGHTWARDS ARROW (μνμντ )(hadrons + ντ ) decay channels with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10511426" target="_blank" >RIV/00216208:11320/25:10511426 - isvavai.cz</a>

Výsledek na webu

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

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-025-14012-4" target="_blank" >10.1140/epjc/s10052-025-14012-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Improved reconstruction of highly boosted τ -lepton pairs in the ττ RIGHTWARDS ARROW (μνμντ )(hadrons + ντ ) decay channels with the ATLAS detector

Popis výsledku v původním jazyce

This paper presents a new τ -lepton reconstructionand identification procedure at theATLASdetector at theLargeHadron Collider,which leads to significantly improvedperformance in the case of physics processes where a highlyboosted pair of τ -leptons is produced and one τ -leptondecays into a muon and two neutrinos (τμ), and the otherdecays into hadrons and one neutrino (τhad). By removing themuon information from the signals used for reconstructionand identification of the τhad candidate in the boosted pair,the efficiency is raised to the level expected for an isolatedτhad. The new procedure is validated by selecting a sample ofhighly boosted Z RIGHTWARDS ARROW τμτhad candidates from the data sampleof 140 fb-1 of proton-proton collisions at 13 TeV recordedwith the ATLAS detector. Good agreement is found betweendata and simulation predictions in both the Z RIGHTWARDS ARROW τμτhad signalregion and in a background validation region. The resultspresented in this paper demonstrate the effectiveness of theτhad reconstruction with muon removal in enhancing the signalsensitivity of the boosted τμτhad channel at the ATLAS detector.

Název v anglickém jazyce

Improved reconstruction of highly boosted τ -lepton pairs in the ττ RIGHTWARDS ARROW (μνμντ )(hadrons + ντ ) decay channels with the ATLAS detector

Popis výsledku anglicky

This paper presents a new τ -lepton reconstructionand identification procedure at theATLASdetector at theLargeHadron Collider,which leads to significantly improvedperformance in the case of physics processes where a highlyboosted pair of τ -leptons is produced and one τ -leptondecays into a muon and two neutrinos (τμ), and the otherdecays into hadrons and one neutrino (τhad). By removing themuon information from the signals used for reconstructionand identification of the τhad candidate in the boosted pair,the efficiency is raised to the level expected for an isolatedτhad. The new procedure is validated by selecting a sample ofhighly boosted Z RIGHTWARDS ARROW τμτhad candidates from the data sampleof 140 fb-1 of proton-proton collisions at 13 TeV recordedwith the ATLAS detector. Good agreement is found betweendata and simulation predictions in both the Z RIGHTWARDS ARROW τμτhad signalregion and in a background validation region. The resultspresented in this paper demonstrate the effectiveness of theτhad reconstruction with muon removal in enhancing the signalsensitivity of the boosted τμτhad channel at the ATLAS detector.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

85

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

32

Strana od-do

706

Kód UT WoS článku

001525510300001

EID výsledku v databázi Scopus

2-s2.0-105012493967