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

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)250-255
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume671
Issue number2
DOIs
Publication statusPublished - 2009 Jan 19

Fingerprint

physics
decay
asymmetry
neutral currents
phenomenology
scaling

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

@article{18f0d992e12c4dc3a0c3bc6521c7b233,
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}",
year = "2009",
month = "1",
day = "19",
doi = "10.1016/j.physletb.2008.12.007",
language = "English",
volume = "671",
pages = "250--255",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "2",

}

Investigation of Bu, d → (π, K) π decays within unparticle physics. / Chen, Chuan Hung; Kim, C. S.; Yoon, Yeo Woong.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 671, No. 2, 19.01.2009, p. 250-255.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigation of Bu, d → (π, K) π decays within unparticle physics

AU - Chen, Chuan Hung

AU - Kim, C. S.

AU - Yoon, Yeo Woong

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.

UR - http://www.scopus.com/inward/record.url?scp=57949097382&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57949097382&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2008.12.007

DO - 10.1016/j.physletb.2008.12.007

M3 - Article

AN - SCOPUS:57949097382

VL - 671

SP - 250

EP - 255

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 2

ER -