Investigation of Bu, d → (π, K) π decays within unparticle physics

Chuan Hung Chen; C. S. Kim; Yeo Woong Yoon

doi:10.1016/j.physletb.2008.12.007

Investigation of B_{u, d} → (π, K) π decays within unparticle physics

Chuan Hung Chen, C. S. Kim, Yeo Woong Yoon

Department of Physics

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

We investigate the implication of unparticle physics on the B_{u, d} → (π, K) π decays under the constraints of the B_{d, s} - over(B, ̄)_{d, s} mixing. We found that not only the unparticle parameters that belong to the flavor changing neutral current (FCNC) processes but also scaling dimension d_U could be constrained by the B_{d, s} - over(B, ̄)_{d, s} mixing phenomenology. Employing the minimum χ² analysis to the B_{u, d} → (π, K) π decays with the constraints of B_{d, s} mixing, we find that the puzzle of large branching ratio for B_d → π⁰ π⁰ and the discrepancy between the standard model estimation and data for the direct CP asymmetry of B⁺ → K⁺ π⁰ and B_d → π⁺ π^- can be resolved well. However, the mixing induced CP asymmetry of B_d → K_S π⁰ could not be well accommodated by the unparticle contributions.

Original language	English
Pages (from-to)	250-255
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	671
Issue number	2
DOIs	https://doi.org/10.1016/j.physletb.2008.12.007
Publication status	Published - 2009 Jan 19

Bibliographical note

Funding Information:
This work of C.H.C. is supported by the National Science Council of R.O.C. under Grant No. NSC-95-2112-M-006-013-MY2. C.H.C. would like to thank Dr. Shao-Long Chen for useful discussions. The work of C.S.K. was supported in part by CHEP-SRC and in part by the KRF Grant funded by the Korean Government (MOEHRD) No. KRF-2005-070-C00030. The work of Y.W.Y. was supported by the KRF Grant funded by the Korean Government (MOEHRD) No. KRF-2005-070-C00030. Y.W.Y thank Jon Parry for his comment on mixing constraints.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2008.12.007

Cite this

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title = "Investigation of Bu, d → (π, K) π decays within unparticle physics",

abstract = "We investigate the implication of unparticle physics on the Bu, d → (π, K) π decays under the constraints of the Bd, s - over(B,{\= })d, s mixing. We found that not only the unparticle parameters that belong to the flavor changing neutral current (FCNC) processes but also scaling dimension dU could be constrained by the Bd, s - over(B,{\= })d, s mixing phenomenology. Employing the minimum χ2 analysis to the Bu, d → (π, K) π decays with the constraints of Bd, s mixing, we find that the puzzle of large branching ratio for Bd → π0 π0 and the discrepancy between the standard model estimation and data for the direct CP asymmetry of B+ → K+ π0 and Bd → π+ π- can be resolved well. However, the mixing induced CP asymmetry of Bd → KS π0 could not be well accommodated by the unparticle contributions.",

author = "Chen, {Chuan Hung} and Kim, {C. S.} and Yoon, {Yeo Woong}",

note = "Funding Information: This work of C.H.C. is supported by the National Science Council of R.O.C. under Grant No. NSC-95-2112-M-006-013-MY2. C.H.C. would like to thank Dr. Shao-Long Chen for useful discussions. The work of C.S.K. was supported in part by CHEP-SRC and in part by the KRF Grant funded by the Korean Government (MOEHRD) No. KRF-2005-070-C00030. The work of Y.W.Y. was supported by the KRF Grant funded by the Korean Government (MOEHRD) No. KRF-2005-070-C00030. Y.W.Y thank Jon Parry for his comment on mixing constraints. ",

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AU - Chen, Chuan Hung

AU - Kim, C. S.

AU - Yoon, Yeo Woong

N1 - Funding Information: This work of C.H.C. is supported by the National Science Council of R.O.C. under Grant No. NSC-95-2112-M-006-013-MY2. C.H.C. would like to thank Dr. Shao-Long Chen for useful discussions. The work of C.S.K. was supported in part by CHEP-SRC and in part by the KRF Grant funded by the Korean Government (MOEHRD) No. KRF-2005-070-C00030. The work of Y.W.Y. was supported by the KRF Grant funded by the Korean Government (MOEHRD) No. KRF-2005-070-C00030. Y.W.Y thank Jon Parry for his comment on mixing constraints.

PY - 2009/1/19

Y1 - 2009/1/19

N2 - We investigate the implication of unparticle physics on the Bu, d → (π, K) π decays under the constraints of the Bd, s - over(B, ̄)d, s mixing. We found that not only the unparticle parameters that belong to the flavor changing neutral current (FCNC) processes but also scaling dimension dU could be constrained by the Bd, s - over(B, ̄)d, s mixing phenomenology. Employing the minimum χ2 analysis to the Bu, d → (π, K) π decays with the constraints of Bd, s mixing, we find that the puzzle of large branching ratio for Bd → π0 π0 and the discrepancy between the standard model estimation and data for the direct CP asymmetry of B+ → K+ π0 and Bd → π+ π- can be resolved well. However, the mixing induced CP asymmetry of Bd → KS π0 could not be well accommodated by the unparticle contributions.

AB - We investigate the implication of unparticle physics on the Bu, d → (π, K) π decays under the constraints of the Bd, s - over(B, ̄)d, s mixing. We found that not only the unparticle parameters that belong to the flavor changing neutral current (FCNC) processes but also scaling dimension dU could be constrained by the Bd, s - over(B, ̄)d, s mixing phenomenology. Employing the minimum χ2 analysis to the Bu, d → (π, K) π decays with the constraints of Bd, s mixing, we find that the puzzle of large branching ratio for Bd → π0 π0 and the discrepancy between the standard model estimation and data for the direct CP asymmetry of B+ → K+ π0 and Bd → π+ π- can be resolved well. However, the mixing induced CP asymmetry of Bd → KS π0 could not be well accommodated by the unparticle contributions.

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