Evidence for longitudinally polarized w bosons in the electroweak production of same-sign w boson pairs in association with two jets in pp collisions at √s=13 TeV with the ATLAS detector
This Letter reports the first evidence of electroweak production of same-sign 𝑊 boson pairs where at least one of the 𝑊 bosons is longitudinally polarized and the most stringent constraint to date for the production of two longitudinally polarized same-sign 𝑊 bosons. The dataset used corresponds to...
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 September, 2025
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| In: |
Physical review letters
Year: 2025, Volume: 135, Issue: 11, Pages: 1-27 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/bpln-ccql |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/bpln-ccql Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/bpln-ccql 
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| Author Notes: | G. Aad et al. (ATLAS Collaboration*) |
MARC
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| 245 | 1 | 0 | |a Evidence for longitudinally polarized w bosons in the electroweak production of same-sign w boson pairs in association with two jets in pp collisions at √s=13 TeV with the ATLAS detector |c G. Aad et al. (ATLAS Collaboration*) |
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| 246 | 3 | 3 | |a Evidence for longitudinally polarized w bosons in the electroweak production of same-sign w boson pairs in association with two jets in proton-proton collisions at square root s = 13 TeV with the ATLAS detector |
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| 500 | |a Veröffentlicht: 10. September 2025 | ||
| 500 | |a Im Titel steht der Buchstabe "s" unter dem Wurzelsymbol | ||
| 500 | |a *ATLAS Collaboration: G. Aad, A. Ackermann, M.J. Backes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, A. Nandi, D.F. Rassloff, L. Sanfilippo, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, L. Vigani, M. Wessels, J. Zinsser [und 2902 weitere Personen] | ||
| 500 | |a Gesehen am 05.02.2026 | ||
| 520 | |a This Letter reports the first evidence of electroweak production of same-sign boson pairs where at least one of the bosons is longitudinally polarized and the most stringent constraint to date for the production of two longitudinally polarized same-sign bosons. The dataset used corresponds to an integrated luminosity of 140 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the ATLAS detector during run 2 of the Large Hadron Collider. The study is performed in final states including two same-sign leptons (electrons or muons), missing transverse momentum, and at least two jets with a large invariant mass and a large rapidity difference. Two independent fits are performed targeting the production of same-sign bosons with at least one, or two longitudinally polarized bosons. The observed (expected) significance of the production with at least one longitudinally polarized boson is 3.3 (4.0) standard deviations. An observed (expected) 95% confidence level upper limit of 0.45 (0.70) fb is reported on the fiducial production cross section of two longitudinally polarized same-sign bosons. | ||
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