Search for anomalous production of highly boosted Z bosons decaying to μ + μ − in proton–proton collisions at √ s = 7 TeV
Name
1-s2.0-S0370269313002621-main.pdf
Description
Published version
Size
682.99 KB
Format
Adobe PDF
Checksum (MD5)
11893e9e5416f93c6ed4c96f8d28bd10
Author(s)
The CMS Collaboration
Date Issued
2013
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Chatrchyan, S., et al. "Search for Anomalous Production of Highly Boosted Z Bosons Decaying to Mu(+)Mu(-) in Proton-Proton Collisions at Root S=7 Tev." Physics Letters B 722 1-3 (2013): 28-47.
Version
Final published version
Abstract
© 2013 CERN Results are reported from a search for the anomalous production of highly boosted Z bosons with large transverse momentum and decaying to μ+μ−. Such Z bosons may be produced in the decays of new heavy particles. The search uses pp collision data at s=7 TeV, corresponding to an integrated luminosity of 5.0 fb−1 recorded with the CMS detector. The shape of the observed transverse momentum distribution of Z bosons is consistent with standard model expectations. Constraints are obtained on models predicting the production of excited quarks decaying via electroweak processes. Assuming a compositeness scale that is equal to the excited quark mass as well as transition coupling strengths between Z bosons and excited quarks that are equal to standard model couplings to quarks, masses of excited quarks below 1.94 TeVare excluded at the 95% confidence level. For excited quark production via a novel contact interaction, masses below 2.22 TeVare excluded, even if the excited quarks do not couple to gluons.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2013.03.037
