Sirunyan, AM and Tumasyan, A and Adam, W and Ambrogi, F and Choudhury, S and Komaragiri, JR and Kumar, D and Panwar, L and Tiwari, PC (2020) Observation of electroweak production of Wγ with two jets in proton-proton collisions at s=13 TeV. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics . (In Press)
|
PDF
Physics Letters.pdf - Accepted Version Download (1MB) | Preview |
Abstract
A first observation is presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions. The W boson decays are selected by requiring one identified electron or muon and an imbalance in transverse momentum. The two jets are required to have a high dijet mass and a large separation in pseudorapidity. The measurement is based on data collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb�1. The observed (expected) significance for this process is 4.9 (4.6) standard deviations. After combining with previously reported CMS results at 8 TeV, the observed (expected) significance is 5.3 (4.8) standard deviations. The cross section for the electroweak Wγjj production in a restricted fiducial region is measured as 20.4±4.5fb and the total cross section for Wγ production in association with 2 jets in the same fiducial region is 108±16fb. All results are in good agreement with recent theoretical predictions. Constraints are placed on anomalous quartic gauge couplings in terms of dimension-8 effective field theory operators. © 2020 The Author(s)
| Item Type: | Journal Article |
|---|---|
| Publication: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Publisher: | Elsevier B.V. |
| Additional Information: | Copyright to this article belongs to Elsevier B.V. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Centre for High Energy Physics |
| Date Deposited: | 29 Jan 2021 11:40 |
| Last Modified: | 29 Jan 2021 11:40 |
| URI: | http://eprints.iisc.ac.in/id/eprint/67754 |
Actions (login required)
 |
View Item |
