Upper Bounds on Supersymmetric Contributions to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi><mml:mo>→</mml:mo><mml:mi>s</mml:mi></mml:math>Transitions from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>s</mml:mi></mml:msub><mml:mo>−</mml:mo><mml:msub><mml:mover accent="true"><mml:mi>B</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mi>s</mml:mi></mml:msub></mml:math>Mixing

Abstract

We study the constraints on supersymmetric contributions to $b\ensuremath{\rightarrow}s$ transitions from the recent allowed range and measurement of ${B}_{s}\ensuremath{-}{\overline{B}}_{s}$ mixing obtained by the D0 and Collider Detector at Fermilab collaborations at the Tevatron. We compute the upper bounds on the relevant off-diagonal squark mass terms and compare them with the bounds coming from $\ensuremath{\Delta}F=1$ decays. We find that the constraints on chirality-flipping mass insertions are unaffected. Conversely, the measurement of ${B}_{s}\ensuremath{-}{\overline{B}}_{s}$ mixing is effective in constraining chirality-conserving mass insertions, and it has striking effects in the case in which left- and right-handed insertions have similar size. Finally, we discuss the phase of the ${B}_{s}\ensuremath{-}{\overline{B}}_{s}$ mixing amplitude in the presence of supersymmetric contributions.

Locations

• Physical Review Letters - View
• arXiv (Cornell University) - View - PDF
• PubMed - View
• DataCite API - View