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A search for the exclusive hadronic decays W-+/- -> pi(+/-)gamma, W-+/- -> K-+/-gamma and W-+/- -> rho(+/-)gamma is performed using up to 140 fb(-1) of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of root s = 13 TeV. If observed, these rare processes would provide a unique test bench for the quantum chromodynamics factorization formalism used to calculate cross sections at colliders. Additionally, at future colliders, these decays could offer a new way to measure the W boson mass through fully reconstructed decay products. The search results in the most stringent upper limits to date on the branching fractions B(W-+/- -> pi(+/-)gamma) < 1.9 x 10(-6), B(W-+/- -> K-+/-gamma) < 1.7 x 10(-6), B(W-+/- -> rho(+/-)gamma) < 5.2 x 10(-6) at 95% confidence level.

Search for the Exclusive W Boson Hadronic Decays W± → π±γ, W± → K±γ and W± → ρ±γ with the ATLAS Detector / Aad, G., Abbott, B., Abeling, K., Abicht, N.j., Abidi, S.h., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B.s., Bourdarios, C.a., Adamczyk, L., Addepalli, S.v., Addison, M.j., Adelman, J., Adiguzel, A., Adye, T., Affolder, A.a., Afik, Y., Agaras, M.n., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 133:16(2024). [10.1103/PhysRevLett.133.161804]

Search for the Exclusive W Boson Hadronic Decays W± → π±γ, W± → K±γ and W± → ρ±γ with the ATLAS Detector

Follega, FM;Iuppa, R;
2024-01-01

Abstract

A search for the exclusive hadronic decays W-+/- -> pi(+/-)gamma, W-+/- -> K-+/-gamma and W-+/- -> rho(+/-)gamma is performed using up to 140 fb(-1) of proton-proton collisions recorded with the ATLAS detector at a center-of-mass energy of root s = 13 TeV. If observed, these rare processes would provide a unique test bench for the quantum chromodynamics factorization formalism used to calculate cross sections at colliders. Additionally, at future colliders, these decays could offer a new way to measure the W boson mass through fully reconstructed decay products. The search results in the most stringent upper limits to date on the branching fractions B(W-+/- -> pi(+/-)gamma) < 1.9 x 10(-6), B(W-+/- -> K-+/-gamma) < 1.7 x 10(-6), B(W-+/- -> rho(+/-)gamma) < 5.2 x 10(-6) at 95% confidence level.
2024
PHYSICAL REVIEW LETTERS
16
2-s2.0-85209879419
WOS:001382540600002
Aad, G; Abbott, B; Abeling, K; Abicht, Nj; Abidi, Sh; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, Bs; Bourdarios, Ca; Adamczyk, L; A...espandi
Search for the Exclusive W Boson Hadronic Decays W± → π±γ, W± → K±γ and W± → ρ±γ with the ATLAS Detector / Aad, G., Abbott, B., Abeling, K., Abicht, N.j., Abidi, S.h., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B.s., Bourdarios, C.a., Adamczyk, L., Addepalli, S.v., Addison, M.j., Adelman, J., Adiguzel, A., Adye, T., Affolder, A.a., Afik, Y., Agaras, M.n., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 133:16(2024). [10.1103/PhysRevLett.133.161804]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/466859
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