Determination of spin and parity of the Higgs boson in the WW∗ → eνμν decay channel with the ATLAS detector

De Santo, Antonella, Salvatore, Fabrizio, Cerri, Alessandro, Asquith, Lily, Vivarelli, Iacopo, Allbrooke, Benedict, Chavez Barajas, Carlos, Santoyo Castillo, Itzebelt, Potter, Tina, Suruliz, Kerim, Sutton, Mark and and others (ATLAS collaboration), (2015) Determination of spin and parity of the Higgs boson in the WW∗ → eνμν decay channel with the ATLAS detector. European Physical Journal C: Particles and Fields, 75 (231). ISSN 1434-6044

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Abstract

Studies of the spin and parity quantum numbers of the Higgs boson in the W W∗ →eνμν final state are presented, based on proton–proton collision data collected by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb−1 at a centre-ofmass energy of √s = 8 TeV. The Standard Model spinparity JC P = 0++ hypothesis is compared with alternative hypotheses for both spin and CP. The case where the observed resonance is a mixture of the Standard-Model-like Higgs boson and CP-even (JC P = 0++) or CP-odd (JC P = 0+−) Higgs boson in scenarios beyond the Standard Model is also studied. The data are found to be consistent with the Standard Model prediction and limits are placed on alternative spin and CP hypotheses, including CP mixing in different scenarios

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Sinead Rance
Date Deposited: 16 Sep 2015 10:00
Last Modified: 15 Mar 2017 01:17
URI: http://sro.sussex.ac.uk/id/eprint/56776

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