Search for new phenomena in pp collisions in final states with tau leptons, b -jets, and missing transverse momentum with the ATLAS detector
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Authors
Aad, G
Abbott, B
Abbott, DC
Abed Abud, A
Abeling, K
Abhayasinghe, DK
Abidi, SH
Abouzeid, OS
Abramowicz, H
Abreu, H
Abulaiti, Y
Abusleme Hoffman, AC
Acharya, BS
Achkar, B
Adam, L
Adam Bourdarios, C
Adamczyk, L
Adamek, L
Adelman, J
Adiguzel, A
Adorni, S
Adye, T
Affolder, AA
Afik, Y
Agapopoulou, C
Agaras, MN
Agarwala, J
Aggarwal, A
Agheorghiesei, C
Aguilar-Saavedra, JA
Ahmad, A
Ahmadov, F
Ahmed, WS
Ai, X
Aielli, G
Akatsuka, S
Akbiyik, M
Åkesson, TPA
Akimov, AV
Al Khoury, K
Alberghi, GL
Albert, J
Alconada Verzini, MJ
Alderweireldt, S
Aleksa, M
Aleksandrov, IN
Alexa, C
Alexopoulos, T
Alfonsi, A
Alfonsi, F
Alhroob, M
Ali, B
Ali, S
Aliev, M
Alimonti, G
Allaire, C
Allbrooke, BMM
Allport, PP
Aloisio, A
Alonso, F
Alpigiani, C
Alunno Camelia, E
Alvarez Estevez, M
Alviggi, MG
Amaral Coutinho, Y
Ambler, A
Ambroz, L
Amelung, C
Amidei, D
Amor Dos Santos, SP
Amoroso, S
Amrouche, CS
Anastopoulos, C
Andari, N
Andeen, T
Anders, JK
Andrean, SY
Andreazza, A
Andrei, V
Angelidakis, S
Angerami, A
Anisenkov, AV
Annovi, A
Antel, C
Anthony, MT
Antipov, E
Antonelli, M
Antrim, DJA
Anulli, F
Aoki, M
Aparisi Pozo, JA
Aparo, MA
Aperio Bella, L
Aranzabal, N
Araujo Ferraz, V
Arcangeletti, C
Arce, ATH
Arena, E
Arguin, JF
Argyropoulos, S
Publication Date
2021Journal Title
Physical Review D
ISSN
2470-0010
Publisher
American Physical Society (APS)
Volume
104
Issue
11
Number
ARTN 112005
Pages
112005
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Aad, G., Abbott, B., Abbott, D., Abed Abud, A., Abeling, K., Abhayasinghe, D., Abidi, S., et al. (2021). Search for new phenomena in pp collisions in final states with tau leptons, b -jets, and missing transverse momentum with the ATLAS detector. Physical Review D, 104 (11. ARTN 112005), 112005. https://doi.org/10.1103/PhysRevD.104.112005
Abstract
A search for new phenomena in final states with hadronically decaying tau
leptons, $b$-jets, and missing transverse momentum is presented. The analyzed
dataset comprises $pp$~collision data at a center-of-mass energy of $\sqrt s =
13$ TeV with an integrated luminosity of 139/fb, delivered by the Large Hadron
Collider and recorded with the ATLAS detector from 2015 to 2018. The observed
data are compatible with the expected Standard Model background. The results
are interpreted in simplified models for two different scenarios. The first
model is based on supersymmetry and considers pair production of top squarks,
each of which decays into a $b$-quark, a neutrino and a tau slepton. Each tau
slepton in turn decays into a tau lepton and a nearly massless gravitino.
Within this model, top-squark masses up to 1.4 TeV can be excluded at the 95%
confidence level over a wide range of tau-slepton masses. The second model
considers pair production of leptoquarks with decays into third-generation
leptons and quarks. Depending on the branching fraction into charged leptons,
leptoquarks with masses up to around 1.25 TeV can be excluded at the 95%
confidence level for the case of scalar leptoquarks and up to 1.8 TeV (1.5 TeV)
for vector leptoquarks in a Yang--Mills (minimal-coupling) scenario. In
addition, model-independent upper limits are set on the cross section of
processes beyond the Standard Model.
Keywords
hep-ex, hep-ex
Sponsorship
STFC (ST/S000712/1)
Identifiers
External DOI: https://doi.org/10.1103/PhysRevD.104.112005
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335765
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