Time-dependent CP asymmetry in B0 → ρ 0γ decay to probe the origin of CP violation

Choong Sun Kim, Gyun Kim Yeong, Young Lee Kang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Since the CP violation in the B system has been investigated up to now only through processes related to the B-B̄ mixing, urgently required is a new way of study for the CP violation and establishing its origin in the B system independent of the mixing process. In this work, we explore the exclusive B 0 → ρ0γ decay to obtain the time-dependent CP asymmetry in the b → d decay process in the standard model and the supersymmetric model. We find that the complex RL and RR mass insertion to the squark sector in the minimal supersymmetric standard model can lead to a large CP asymmetry in B → ργ decay through the gluino-squark diagrams, which is suppressed in the standard model and B → ργ may be a new window to study the new physics in the future.

Original languageEnglish
Article number054014
Pages (from-to)1-6
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume71
Issue number5
DOIs
Publication statusPublished - 2005 Mar 1

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CP violation
asymmetry
probes
decay
insertion
sectors
diagrams
physics

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

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Time-dependent CP asymmetry in B0 → ρ 0γ decay to probe the origin of CP violation. / Kim, Choong Sun; Yeong, Gyun Kim; Kang, Young Lee.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 71, No. 5, 054014, 01.03.2005, p. 1-6.

Research output: Contribution to journalArticle

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AB - Since the CP violation in the B system has been investigated up to now only through processes related to the B-B̄ mixing, urgently required is a new way of study for the CP violation and establishing its origin in the B system independent of the mixing process. In this work, we explore the exclusive B 0 → ρ0γ decay to obtain the time-dependent CP asymmetry in the b → d decay process in the standard model and the supersymmetric model. We find that the complex RL and RR mass insertion to the squark sector in the minimal supersymmetric standard model can lead to a large CP asymmetry in B → ργ decay through the gluino-squark diagrams, which is suppressed in the standard model and B → ργ may be a new window to study the new physics in the future.

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