Search for a right-handed W boson and a heavy neutrino in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV
Name
13130_2022_Article_18154.pdf
Size
1.16 MB
Format
Adobe PDF
Checksum (MD5)
42ebfab804470068e5e8f3b403a1ed18
Author(s)
Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Escalante Del Valle, A.
Frühwirth, R.
Jeitler, M.
Date Issued
April 8, 2022
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2022 Apr 08;2022(4):47
Version
Final published version
Abstract
Abstract
A search is presented for a right-handed W boson (WR) and a heavy neutrino (N), in a final state consisting of two same-flavor leptons (ee or μμ) and two quarks. The search is performed with the CMS experiment at the CERN LHC using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 138 fb−1. The search covers two regions of phase space, one where the decay products of the heavy neutrino are merged into a single large-area jet, and one where the decay products are well separated. The expected signal is characterized by an excess in the invariant mass distribution of the final-state objects. No significant excess over the standard model background expectations is observed. The observations are interpreted as upper limits on the product of WR production cross sections and branching fractions assuming that couplings are identical to those of the standard model W boson. For N masses mN equal to half the WR mass
m
W
R
$$ {m}_{{\mathrm{W}}_{\mathrm{R}}} $$
(mN = 0.2 TeV),
m
W
R
$$ {m}_{{\mathrm{W}}_{\mathrm{R}}} $$
is excluded at 95% confidence level up to 4.7 (4.8) and 5.0 (5.4) TeV for the electron and muon channels, respectively. This analysis provides the most stringent limits on the WR mass to date.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP04(2022)047
