Observation of electroweak production of W gamma with two jets in proton-proton collisions at root s=13 TeV
- Title
- Observation of electroweak production of W gamma with two jets in proton-proton collisions at root s=13 TeV
- Author
- 김태정
- Keywords
- CMS; Physics; Vector boson scattering
- Issue Date
- 2020-12
- Publisher
- ELSEVIER
- Citation
- PHYSICS LETTERS B, v. 811, article no. 135988
- 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 W gamma jj production in a restricted fiducial region is measured as 20.4 +/- 4.5 fb and the total cross section for W gamma production in association with 2 jets in the same fiducial region is 108 +/- 16 fb. 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.
- URI
- https://www.sciencedirect.com/science/article/pii/S0370269320307917?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/175006
- ISSN
- 0370-2693; 1873-2445
- DOI
- 10.1016/j.physletb.2020.135988
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
- Observation of electroweak production of W gamma with two jets in proton-proton collisions at root s=13 TeV.pdfDownload
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