Testing quark mixing in minimal left-right symmetric models with $b$-tags at the LHC

Abstract

Motivated by a hint in a CMS search for right-handed $W$-bosons in $eejj$ final states, we propose an experimental test of quark-mixing matrices in a general left-right symmetric model, based on counting the numbers of $b$-tags from right-handed $W$-boson hadronic decays. We find that, with our test, differences between left- and right-handed quark-mixing matrices could be detected at the LHC with $\sqrt{s}=14$ TeV. With an integrated luminosity of about $20/\text{fb}$, our test is sensitive to right-handed quark-mixing angles as small as about $30^{\circ }$ and with $3000/\text{fb}$, our test's sensitivity improves to right-handed mixing angles as small as about $7.5^{\circ }$. Our test's sensitivity might be further enhanced by tuning $b$-tagging efficiency against purity.

14 pages, 4 figures. Matches version published in Nucl.Phys. B. Expanded descriptions of figures but conclusions unchanged

References in corpus (1)

• Right-Handed Quark Mixings in Minimal Left-Right Symmetric Model with General CP Violation

Cited by in corpus (13)

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• Restoration of Parity and the Right-Handed Analog of the CKM Matrix
• Reconciling the 2 TeV Excesses at the LHC in a Linear Seesaw Left-Right Model
• Left-Right Symmetry and Lepton Number Violation at the Large Hadron Electron Collider
• Viability of minimal left-right models with discrete symmetries
• A Call for New Physics : The Muon Anomalous Magnetic Moment and Lepton Flavor Violation
• Low scale left-right-right-left symmetry
• Right-right-left extension of the standard model
• Left-right non-linear dynamical Higgs
• Diboson excess and $Z^{\prime }$-predictions via left-right non-linear Higgs
• Examining a right-handed quark mixing matrix with $b$-tags at the LHC