Search for high-mass dilepton resonances using 139 fb−1 of pp collision data collected at s=13 TeV with the ATLAS detector
- G. Aad
- B. Abbott
- D. C. Abbott
- O. Abdinov
- A. Abed Abud
- K. Abeling
- D. K. Abhayasinghe
- S. H. Abidi
- O. S. AbouZeid
- N. L. Abraham
- H. Abramowicz
- H. Abreu
- Y. Abulaiti
- B. S. Acharya
- B. Achkar
- S. Adachi
- L. Adámek
- C. Adam Bourdarios
- L. Adamczyk
- L. Adamek
- J. Adelman
- M. Adersberger
- A. Adıgüzel
- S. Adorni
- T. Adye
- A. A. Affolder
- Y. Afik
- C. Agapopoulou
- M. N. Agaras
- A. Aggarwal
- C. Agheorghiesei
- J. A. Aguilar–Saavedra
- F. Ahmadov
- W. S. Ahmed
- X. Ai
- G. Aielli
- S. Akatsuka
- T. P. A. Åkesson
- E. Akilli
- A.V. Akimov
- K. Al Khoury
- G. L. Alberghi
- Justin E Albert
- M. J. Alconada Verzini
- S. Alderweireldt
- M. Aleksa
- I. N. Aleksandrov
- C. Alexa
- D. Alexandre
- T. Alexopoulos
- A. Alfonsi
- M. Alhroob
- B. Ali
- G. Alimonti
- John Alison
- S.P. Alkire
- C. Allaire
- B. M. M. Allbrooke
- B. Allen
- P. P. Allport
- A. Aloisio
- A. Alonso
- F. Alonso
- C. Alpigiani
- A. A. Alshehri
- M. Alvarez Estevez
- B. Álvarez González
- D. Álvarez Piqueras
- M. G. Alviggi
- Y. Amaral Coutinho
- A. Ambler
- L. Ambroz
- C. Amelung
- D. Amidei
- S. P. Amor Dos Santos
- S. Amoroso
- C. S. Amrouche
- F. F. An
- C. Anastopoulos
- N. Andari
- T. Andeen
- C. F. Anders
- J. K. Anders
- Attilio Andreazza
- V. Andrei
- C. R. Anelli
- S. Angelidakis
- Aaron Angerami
- A. V. Anisenkov
- A. Annovi
- C. Antel
- M. T. Anthony
- M. Antonelli
- D. J. A. Antrim
- F. Anulli
- M. Aoki
- J. A. Aparisi Pozo
- L. Aperio Bella
- G. Arabidze
- J. P. Araque
- EHElias Sideras Haddad
Physics Letters B · 2019 · Elsevier BV
0 views · 0 downloads
Abstract
A search for high-mass dielectron and dimuon resonances in the mass range of 250 GeV to 6 TeV is presented. The data were recorded by the ATLAS experiment in proton–proton collisions at a centre-of-mass energy of s = 13 TeV during Run 2 of the Large Hadron Collider and correspond to an integrated luminosity of 139 fb −1 . A functional form is fitted to the dilepton invariant-mass distribution to model the contribution from background processes, and a generic signal shape is used to determine the significance of observed deviations from this background estimate. No significant deviation is observed and upper limits are placed at the 95% confidence level on the fiducial cross-section times branching ratio for various resonance width hypotheses. The derived limits are shown to be applicable to spin-0, spin-1 and spin-2 signal hypotheses. For a set of benchmark models, the limits are converted into lower limits on the resonance mass and reach 4.5 TeV for the E 6 -motivated Z ψ ′ boson. Also presented are limits on Heavy Vector Triplet model couplings.