Lifetimes of b-hadrons and mixing of neutral B-mesons: theoretical and experimental status
J. Albrecht, F. U. Bernlochner, Alexander Lenz, Aleksey V. Rusov
Abstract
Abstract In this article, we review the current status of B -mixing and b -hadron lifetimes both from experimental and theoretical points of view. Furthermore, we discuss the phenomenological potential of these observables for deepening our understanding of quantum chromodynamics (QCD) and for indirect searches for effects beyond the Standard Model (SM). In addition, we present new updated SM predictions for the mixing observables $$\Delta M_{d,s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Δ</mml:mi><mml:msub><mml:mi>M</mml:mi><mml:mrow><mml:mi>d</mml:mi><mml:mo>,</mml:mo><mml:mi>s</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> , $$\Delta \Gamma _{d,s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Δ</mml:mi><mml:msub><mml:mi>Γ</mml:mi><mml:mrow><mml:mi>d</mml:mi><mml:mo>,</mml:mo><mml:mi>s</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> and $$a_{fs}^{d,s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mi>a</mml:mi><mml:mrow><mml:mi>fs</mml:mi></mml:mrow><mml:mrow><mml:mi>d</mml:mi><mml:mo>,</mml:mo><mml:mi>s</mml:mi></mml:mrow></mml:msubsup></mml:math> . We conclude with an outlook on future prospects for theoretical and experimental improvements.