Search for heavy resonances decaying to tau lepton pairs in proton-proton collisions at √s=13 TeV

• Main Authors: Khachatryan, Vardan, Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Md. Ali, Mohd. Adli
• Format: Article
• Language: English; English
• Published: Springer Nature 2017
• Subjects: Q Science (General); QC Physics
• Online Access: http://irep.iium.edu.my/63075/1/63075_Search%20for%20heavy%20resonances%20decaying%20_article.pdf; http://irep.iium.edu.my/63075/2/63075_Search%20for%20heavy%20resonances%20decaying%20_scopus.pdf; http://irep.iium.edu.my/63075/; https://link.springer.com/content/pdf/10.1007%2FJHEP02%282017%29048.pdf
• Institution: Universiti Islam Antarabangsa Malaysia

A search for heavy resonances that decay to tau lepton pairs is performed using proton-proton collisions at √ s = 13 TeV. The data were collected with the CMS detector at the CERN LHC and correspond to an integrated luminosity of 2.2 fb−1 . The observations are in agreement with standard model predictions. An upper limit at 95% confidence level on the product of the production cross section and branching fraction into tau lepton pairs is calculated as a function of the resonance mass. For the sequential standard model, the presence of Z0 bosons decaying into tau lepton pairs is excluded for Z0 masses below 2.1 TeV, extending previous limits for this final state. For the topcolor-assisted technicolor model, which predicts Z0 bosons that preferentially couple to third-generation fermions, Z0 masses below 1.7 TeV are excluded, representing the most stringent limit to date.