Using single top rapidity to measure V_td, V_ts, V_tb at hadron colliders

Abstract

Single top production processes are usually regarded as the ones in which V_tb can be directly measured at hadron colliders. We show that the analysis of the single top rapidity distribution in t-channel and tW production can also set direct limits on V_td. At LHC with 10 fb^-1 at 14 TeV the combined limits on V_td may be reduced by almost a factor of two when the top rapidity distribution is used. This also implies that the limits on V_tb can also be reduced by 15%, since both parameters as well as V_ts must be simultaneously obtained from a global fit to data. At Tevatron the explotation of this distribution would require very high statistics.

LaTeX 19 pages, 48 PS figures. A section added with estimations of systematics, LO/NLO comparison and a fast detector simulation. Final version to appear in PRD

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Cited by in corpus (12)

• Single top-quark production at the Tevatron and the LHC
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• Measurement of CKM matrix elements in single top quark $t$-channel production in proton-proton collisions at $\sqrt{s}=$ 13 TeV
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