Mesino-antimesino oscillations

Area of Science:

• High Energy Physics
• Particle Physics
• Supersymmetry

Background:

• Supersymmetric theories propose partner particles for Standard Model particles.
• Low scale supersymmetry breaking scenarios are less explored.
• The lightest Standard Model superpartner could be a squark.

Purpose of the Study:

• Investigate the phenomenology of supersymmetric theories with low scale supersymmetry breaking.
• Analyze the behavior and detection of squarks as the lightest superpartners.
• Explore potential signatures of supersymmetry at high energy colliders.

Main Methods:

• Theoretical investigation of squark hadronization into sbaryons and mesinos.
• Analysis of bound state production at high energy colliders.
• Study of neutral mesino-antimesino oscillations and their implications.
• Examination of stop mesino-antimesino oscillations as a probe of sflavor violation.

Main Results:

• Squarks hadronize into sbaryons and mesinos, leading to displaced jets with large negative impact parameters.
• Neutral mesino-antimesino oscillations are possible and can occur at observable rates.
• Stop mesino-antimesino oscillations offer a sensitive probe of up-type sflavor violation.
• A same-sign top-top topology in events can signal supersymmetry discovery.

Conclusions:

• The study provides a framework for searching for low scale supersymmetry.
• Observable signatures, including displaced jets and specific top-quark events, are predicted.
• Mesino-antimesino oscillations present a novel discovery channel for supersymmetry.