Abstract
This Letter presents the observation and measurement of electroweak production of a same-sign W boson pair in association with two jets using 36.1 fb-1 of proton-proton collision data recorded at a center-of-mass energy of s=13 TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed in the detector fiducial phase-space region, defined by the presence of two same-sign leptons, electron or muon, and at least two jets with a large invariant mass and rapidity difference. A total of 122 candidate events are observed for a background expectation of 69±7 events, corresponding to an observed signal significance of 6.5 standard deviations. The measured fiducial signal cross section is σfid=2.89-0.48+0.51(stat)-0.28+0.29(syst) fb. © 2019 authors.
Original language | English |
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Article number | 161801 |
Journal | Physical Review Letters |
Volume | 123 |
Issue number | 16 |
DOIs | |
Publication status | Published - 2019 |
Subject classification (UKÄ)
- Subatomic Physics
Free keywords
- Phase space methods
- Tellurium compounds
- ATLAS detectors
- Invariant mass
- Large Hadron Collider
- Observation and measurement
- Phase space regions
- Proton proton collisions
- Signal significance
- Standard deviation
- Bosons