arXiv:1712.01298·v4·High Energy Physics — Phenomenology

Using time-dependent indirect $C P$ asymmetries to measure $T$ and $C P T$ violation in $B^{0}$ - $B ˉ^{0}$ mixing

Anirban Karan🇮🇳 · Abinash Kumar Nayak🇮🇳 · Rahul Sinha🇮🇳 · David London🇨🇦

Abstract

Quantum field theory, which is the basis for all of particle physics, requires that all processes respect $C P T$ invariance. It is therefore of paramount importance to test the validity of $C P T$ conservation. In this Letter, we show that the time-dependent, indirect $C P$ asymmetries involving $B$ decays to a $C P$ eigenstate contain enough information to measure $T$ and $C P T$ violation in $B^{0}$ - $B ˉ^{0}$ mixing, in addition to the standard $C P$ -violating weak phases. Entangled $B^{0} B ˉ^{0}$ states are not required (so that this analysis can be carried out at LHCb, as well as at the $B$ factories), penguin pollution need not be neglected, and the measurements can be made even if the $B^{0}$ - $B ˉ^{0}$ width difference vanishes.

Comments: 10 pages, no figures, changes: removed almost all discussion of what can and cannot be done with the method of entangled states; explained that CPT- and T-violating parameters also contribute to CP-violating effects; reorganized the presentation of the paper; added footnotes and references

Using time-dependent indirect CP asymmetries to measure T and CPT violation in B0-Bˉ0 mixing

Abstract

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Using time-dependent indirect $C P$ asymmetries to measure $T$ and $C P T$ violation in $B^{0}$ - $B ˉ^{0}$ mixing

Citation historyopen in Citation History ↗