Jet angular correlation in vector-boson fusion processes at hadron colliders

By K. Hagiwara, Qiang Li, Kentarou Mawatari. 2009

136 citations recorded by the source corpus.

Higgs boson and massive-graviton productions in association with two jets via vector-boson fusion (VBF) processes and their decays into a vector-boson pair at hadron colliders are studied. They include scalar and tensor boson production processes via weak-boson fusion in quark-quark collisions, gluon fusion in quark-quark, quark-gluon and gluon-gluon collisions, as well as their decays into a pair of weak bosons or virtual gluons which subsequently decay into $\ell\bar\ell$, $q\bar q$ or $gg$. We give the helicity amplitudes explicitly for all the VBF subprocesses, and show that the VBF amplitudes dominate the exact matrix elements not only for the weak-boson fusion processes but also for all the gluon fusion processes when appropriate selection cuts are applied, such as a large rapidity separation between two jets and a slicing cut for the transverse momenta of the jets. We also show that our off-shell vector-boson current amplitudes reduce to the standard quark and gluon splitting amplitudes with appropriate gluon-polarization phases in the collinear limit. Nontrivial azimuthal angle correlations of the jets in the production and in the decay of massive spin-0 and -2 bosons are manifestly expressed as the quantum interference among different helicity states of the intermediate vector-bosons. Those correlations reflect the spin and the CP nature of the Higgs bosons and the massive gravitons.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/57652696b1fd7a6477596d919e765bbc8379881a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV (2015, methodology): “The kinematics of the Higgs boson decay to four charged leptons, two charged leptons and two neutrinos, or two photons, and their application to the study of the properties of the Higgs boson have been extensively studied in the literature [28–31,36,38,42,42,43,45–49,51,53].”
Handbook of LHC Higgs Cross Sections: 3. Higgs Properties (2013, background): “However, this problem can be solved by gluon fusion gg → H,A + jj with γγ decays of the Higgs bosons and jets in the final state [476].”
Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production (2014, background): “The azimuthal angle between the two forward jets is a well known probe for the Lorentz structure of the hard process [112–119].”
A Bayesian view of the Higgs sector with higher dimensional operators (2013, background): “2 q 1:q 2 ; (4.1) where M0;0 and M ; are the longitudinal and transverse helicities amplitudes, respectively. Interferences among helicity amplitudes then determine angular distributions (see e.g. [54]). In this work, we consider that the SM contribution to the tensorial coupling is small with resp”