Constraints on models for the Higgs Boson with exotic spin and parity in $VH$Vbb$ final states

Abazov, V. M. and Abbott, B. and Acharya, B. S. and Adams, M. and Adams, T. and Agnew, J. P. and Alexeev, G. D. and Alkhazov, G. and Alton, A. and Askew, A. and Atkins, S. and Augsten, K. and Avila, C. and Badaud, F. and Bagby, L. and Baldin, B. and Bandurin, D. V. and Banerjee, S. and Barberis, E. and Baringer, P. and Bartlett, J. F. and Bassler, U. and Bazterra, V. and Bean, A. and Begalli, M. and Bellantoni, L. and Beri, S. B. and Bernardi, G. and Bernhard, R. and Bertram, I. and Besanifmmode çelse çon, M. and Beuselinck, R. and Bhat, P. C. and Bhatia, S. and Bhatnagar, V. and Blazey, G. and Blessing, S. and Bloom, K. and Boehnlein, A. and Boline, D. and Boos, E. E. and Borissov, G. and Borysova, M. and Brandt, A. and Brandt, O. and Fox, H. and Price, D. and Ratoff, P. N. and Ross, A. and Williams, M. R. J. (2014) Constraints on models for the Higgs Boson with exotic spin and parity in $VH$Vbb$ final states. Physical review letters, 113. ISSN 1079-7114

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Abstract

We present constraints on models containing non-standard-model values for the spin J and parity P of the Higgs boson H in up to 9.7  fb−1 of pp¯ collisions at s√=1.96  TeV collected with the D0 detector at the Fermilab Tevatron Collider. These are the first studies of Higgs boson JP with fermions in the final state. In the ZH→ℓℓbb¯, WH→ℓνbb¯, and ZH→ννbb¯ final states, we compare the standard model (SM) Higgs boson prediction, JP=0+, with two alternative hypotheses, JP=0− and JP=2+. We use a likelihood ratio to quantify the degree to which our data are incompatible with non-SM JP predictions for a range of possible production rates. Assuming that the production rate in the signal models considered is equal to the SM prediction, we reject the JP=0− and JP=2+ hypotheses at the 97.6% CL and at the 99.0% CL, respectively. The expected exclusion sensitivity for a JP=0− (JP=2+) state is at the 99.86% (99.94%) CL. Under the hypothesis that our data are the result of a combination of the SM-like Higgs boson and either a JP=0− or a JP=2+ signal, we exclude a JP=0− fraction above 0.80 and a JP=2+ fraction above 0.67 at the 95% CL. The expected exclusion covers JP=0− (JP=2+) fractions above 0.54 (0.47).

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2014 American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
71417
Deposited By:
Deposited On:
24 Oct 2014 12:36
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Jul 2020 04:50