Constraining the Higgs couplings to up and down quarks using production kinematics at the CERN Large Hadron Collider

2016/08/15 by Bonner, Gage, Logan, Heather E.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1608.04376

Abstract

We study the prospects for constraining the Higgs boson's couplings to up and down quarks using kinematic distributions in Higgs production at the CERN Large Hadron Collider. We find that the Higgs p_T distribution can be used to constrain these couplings with precision competitive to other proposed techniques. With 3000 fb^-1 of data at 13 TeV in the four-lepton decay channel, we find -0.73 \lesssim κ_u \lesssim 0.33 and -0.88 \lesssim κ_d \lesssim 0.32, where κ_q = (m_q/m_b) κ_q is a scaling factor that modifies the q quark Yukawa coupling relative to the Standard Model bottom quark Yukawa coupling. The sensitivity may be improved by including additional Higgs decay channels.

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