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Probing the spin-parity of the Higgs boson via jet kinematics in vector boson fusion

Djouadi, A and Godbole, RM and Mellado, B and Mohan, K (2013) Probing the spin-parity of the Higgs boson via jet kinematics in vector boson fusion. In: Physics Letters B, 723 (4-5). pp. 307-313.

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Official URL: http://dx.doi.org/10.1016/j.physletb.2013.04.060


Determining the spin and the parity quantum numbers of the recently discovered Higgs-like boson at the LHC is a matter of great importance. In this Letter, we consider the possibility of using the kinematics of the tagging jets in Higgs production via the vector boson fusion (VBF) process to test the tensor structure of the Higgs-vector boson (HVV) interaction and to determine the spin and CP properties of the observed resonance. We show that an anomalous HVV vertex, in particular its explicit momentum dependence, drastically affects the rapidity between the two scattered quarks and their transverse momenta and, hence, the acceptance of the kinematical cuts that allow to select the VBF topology. The sensitivity of these observables to different spin-parity assignments, including the dependence on the LHC center of mass energy, are evaluated. In addition, we show that in associated Higgs production with a vector boson some kinematical variables, such as the invariant mass of the system and the transverse momenta of the two bosons and their separation in rapidity, are also sensitive to the spin-parity assignments of the Higgs-like boson.

Item Type: Journal Article
Publication: Physics Letters B
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 20 Sep 2013 12:12
Last Modified: 20 Sep 2013 12:12
URI: http://eprints.iisc.ac.in/id/eprint/47222

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