Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV - Archive ouverte HAL Access content directly
Journal Articles Journal of High Energy Physics Year : 2017

Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV

, (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (1) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , , , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (2) , (3) , (3) , (3) , (3) , (3) , (3) , (3) , (3) , (3) , , (3) , (3) , (3) , (3) , (3) , (3) , (3) , (4) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5) , (5)
1
2
3
4
5
V. Khachatryan
  • Function : Author
S. Baffioni
P. Busson
R. Granier De Cassagnac
P. Min´e
  • Function : Author
M. Nguyen
  • Function : Author
P. Paganini
N. Chanon
C. Collard
E. Conte13
  • Function : Author
D. Contardo
M. Gouzevitch
Fabienne Lagarde
M. Lethuillier
V. Sordini

Abstract

A search for new particles has been conducted using events with two high transverse momentum (pt) tau leptons that decay hadronically, at least two high-pt jets, and missing transverse energy from the tau lepton decays. The analysis is performed using data from proton-proton collisions, collected by the CMS experiment in 2015 at sqrt(s) = 13 TeV, corresponding to an integrated luminosity of 2.1 inverse femtobarns. The results are interpreted in two physics models. The first model involves heavy right-handed neutrinos, N[l] (l = e, mu, tau), and right-handed charged bosons, W[R], arising in a left-right symmetric extension of the standard model. Masses of the W[R] boson below 2.35 (1.63) TeV are excluded at 95% confidence level, assuming the N[tau] mass is 0.8 (0.2) times the mass of the W[R] boson and that only the N[tau] flavor contributes to the W[R] decay width. In the second model, pair production of third-generation scalar leptoquarks that decay into tau tau bb is considered. Third-generation scalar leptoquarks with masses below 740 GeV are excluded, assuming a 100% branching fraction for the leptoquark decay to a tau lepton and a bottom quark. This is the first search at hadron colliders for the third-generation Majorana neutrino, as well as the first search for third-generation leptoquarks in the final state with a pair of hadronically decaying tau leptons and jets.
Fichier principal
Vignette du fichier
HAL-01409594.pdf (600.64 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

in2p3-01409594 , version 1 (18-12-2018)

Identifiers

Cite

V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV. Journal of High Energy Physics, 2017, 03 (3), pp.077. ⟨10.1007/JHEP03(2017)077⟩. ⟨in2p3-01409594⟩
4 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More