Chinese Physics C > 2014, Vol. 38 > Issue(3): 033101 DOI: 10.1088/1674-1137/38/3/033101

Revisiting the Kπpuzzle in the pQCD factorization approach

1.
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210023, China

Abstract
HTML
Reference
Related

PDF

Abstract：
In this paper, we calculated the branching ratios and direct CPviolation of the four B→K πdecays with the inclusion of all currently known next-to-leading order (NLO) contributions by employing the perturbative QCD (pQCD) factorization approach. We found that (a) Besides the 10% enhancement from the NLO vertex corrections, the quark-loops and magnetic penguins, the NLO contributions to the form factors can provide an additional ~15% enhancement to the branching ratios, and lead to a very good agreement with the data; (b) The NLO pQCD predictions are A _CP ^sir(B ⁰→K ⁺ π ^-)=(-6.5±3.1)% and A _CP ^sir(B ⁰→K ⁺ π ⁰)=(2.2±2.0)%, become well consistent with the data due to the inclusion of the NLO contributions.

References

[1]

Particle Data Group, Beringer J et al. Phys. Rev. D, 2012, 86: 010001[2] Heavy Flavor Averaging Group, Amhis Y. et al. arXiv:1207.1158 [hep-ex]; www.slac.stanford.edu/xorg/hfag[3] Aaij R et al. (LHCb collaboration). Phys. Rev. Lett., 2012, 108: 201601[4] LI H N, Mishima S, Sanda A I. Phys. Rev. D, 2005, 72: 114005[5] LI H N, SHEN Y L, WANG Y M. Phys. Rev. D, 2012, 85: 074004[6] LI H N. Prog. Part. Nucl. Phys., 2003, 51: 85[7] Keum Y Y, LI H N, Sanda A I. Phys. Rev. D, 2001, 504: 6; Phys. Rev. D, 2001, 63: 054008[8] L C D, Ukai K, YANG M Z. Phys. Rev. D, 2001, 63: 074009[9] XIAO Z J, ZHANG Z Q, LIU X, GUO L B. Phys. Rev. D, 2008, 78: 114001[10] Ball P. J. High Energy Phys., 1998, 09: 005; J. High Energy Phys., 1999, 01: 010; Ball P, Zwicky R. Phys. Rev. D, 2005, 71: 014015; Ball P, Braun V M, Lenz A. J. High Energy Phys., 2006, 05: 004[11] LI Y, L C D, XIAO Z J, YU X Q. Phys. Rev. D, 2004, 70: 034009[12] Ali A, Kramer G, LI Y, LU C D, SHEN Y L, WANG W, WANG Y M. Phys. Rev. D, 2007, 76: 074018[13] FAN Y Y, WANG W F, CHENG S, XIAO Z J. Phys. Rev. D, 2013, 87: 094003[14] Buchalla G, Buras A J, Lautenbacher M E. mp, 1996, 68: 1215[15] Mishima S, Sanda A I. Prog. Theor. Phys., 2003, 110: 549[16] Beneke M, Buchalla G, Neubert M, Sachrajda C T. Phys. Rev. Lett., 1999, 83: 1914; pb, 2000, 591: 313[17] Beneke M, Neubert M. pb, 2003, 675: 333[18] Beneke M. Nucl. Phys. B, Proc. Suppl., 2007, 170: 57[19] WANG W F, XIAO Z J. Phys. Rev. D, 2012, 86: 114025

[1]	Ya-Qian Li,Meng-Kun Jia,Rui Zhou. Revisiting nonfactorizable contributions to factorization-forbidden decays ofBmesons to charmonium. Chinese Physics C, 2020, 44(11): 113104.doi:10.1088/1674-1137/abae50
[2]	Qing-Hua He. An energy sum constraint of event mixing for Bose-Einstein correlations in reactions with ππX final states around 1 GeV. Chinese Physics C, 2018, 42(7): 074004.doi:10.1088/1674-1137/42/7/074004
[3]	Rafel Escribano,Sergi González-Solís. A data-driven approach to π⁰, η and η' single and double Dalitz decays. Chinese Physics C, 2018, 42(2): 023109.doi:10.1088/1674-1137/42/2/023109
[4]	Hua-Yu Jiang,Fu-Sheng Yu,Qin Qin,Hsiang-nan Li,Cai-Dian Lü. D⁰-D⁰mixing parameteryin the factorization-assisted topological-amplitude approach. Chinese Physics C, 2018, 42(6): 063101.doi:10.1088/1674-1137/42/6/063101
[5]	Long-Ke Li,Ye-Qi Chen,Wen-Biao Yan,Zi-Ping Zhang. D⁰-D⁰mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D⁰→K⁺π^-π⁰via time-dependent amplitude analysis. Chinese Physics C, 2017, 41(2): 023001.doi:10.1088/1674-1137/41/2/023001
[6]	Ai-Jun Ma,Ya Li,Wen-Fei Wang,Zhen-Jun Xiao.S-wave resonance contributions to B_(s)⁰→η_c(2S)π⁺π^-in the perturbative QCD factorization approach. Chinese Physics C, 2017, 41(8): 083105.doi:10.1088/1674-1137/41/8/083105
[7]	M. Ablikim,M. N. Achasov,X. C. Ai,O. Albayrak,M. Albecht,D. J. Ambrose,A. Amoroso. Measurement of the absolute branching fraction of D+→K0e+ve via K0→π0π0. Chinese Physics C, 2016, 40(11): 113001.doi:10.1088/1674-1137/40/11/113001
[8]	Wen-Long Yuan,Xiao-Cong Ai,Xiao-Bin Ji,Shen-Jian Chen,Yao Zhang,Ling-Hui Wu,Liang-Liang Wang,Ye Yuan. Study of tracking efficiency and its systematic uncertainty from J/ψ→pp π⁺π^-at BESIII. Chinese Physics C, 2016, 40(2): 026201.doi:10.1088/1674-1137/40/2/026201
[9]	Qin Qin,Zhi-Tian Zou,Ying Li,Cai-Dian Lü. Constraining the UT angleγby CP violation parameters in B⁰→π⁺π^-*. Chinese Physics C, 2016, 40(3): 031001.doi:10.1088/1674-1137/40/3/031001
[10]	Xing-Dao Guo,Xue-Wen Liu,Hong-Wei Ke,Xue-Qian Li. Direct pion emission in D^*+→D⁺π decays. Chinese Physics C, 2016, 40(7): 073103.doi:10.1088/1674-1137/40/7/073103
[11]	Qing-Ping Ji,Yu-Ping Guo,Ai-Qiang Guo,Chun-Xu Yu,Zhi-Yong Wang. Experimental review of e⁺e^-→ππh_c. Chinese Physics C, 2016, 40(1): 012001.doi:10.1088/1674-1137/40/1/012001
[12]	YUAN Chang-Zheng. Evidence for resonant structures in e⁺e^-→π⁺π^-h_c. Chinese Physics C, 2014, 38(4): 043001.doi:10.1088/1674-1137/38/4/043001
[13]	ZHANG Zhi-Qing,WANG Shi-Jian,ZHANG Li-Ying. Branching ratio andCPasymmetry of B_s→K₀^*(1430)η^(')decays in the PQCD approach. Chinese Physics C, 2013, 37(4): 043103.doi:10.1088/1674-1137/37/4/043103
[14]	ZHAO Qiang,LI Gang,CHANG Chao-Hsi. Further insights into the ρπ puzzle. Chinese Physics C, 2010, 34(2): 299-304.doi:10.1088/1674-1137/34/2/027
[15]	LI Xue-Qian. What do we learn from the ρ-π puzzle. Chinese Physics C, 2010, 34(2): 267-269.doi:10.1088/1674-1137/34/2/022
[16]	LIU Xin,ZHANG Zhi-Qing,XIAO Zhen-Jun. B→K₀^*(1430) η^(′)decays in the pQCD approach. Chinese Physics C, 2010, 34(2): 157-164.doi:10.1088/1674-1137/34/2/001
[17]	LI Hsiang-Nan. Next-to-leading-order calculation in k_Tfactorization. Chinese Physics C, 2009, 33(6): 463-468.doi:10.1088/1674-1137/33/6/012
[18]	ZHANG Zhi-Qing,XIAO Zhen-Jun. B→f₀(980) (π,η^(′)) decays in the PQCD approach. Chinese Physics C, 2009, 33(7): 508-515.doi:10.1088/1674-1137/33/7/002
[19]	ZHANG Zhi-Qing,LIU Xin,XIAO Zhen-Jun. B→πη^(′),η^(′)η^(′)decays and NLO contributions in the pQCD approach. Chinese Physics C, 2009, 33(9): 722-728.doi:10.1088/1674-1137/33/9/003
[20]	Yu Hong. TheƖ/E Puzzle and the Moment Analysis. Chinese Physics C, 1989, 13(S2): 181-184.

Access

Get Citation

BAI Wei, LIU Min, FAN Ying-Ying, WANG Wen-Fei, CHENG Shan and XIAO Zhen-Jun. Revisiting the K πpuzzle in the pQCD factorization approach[J]. Chinese Physics C, 2014, 38(3): 033101. doi: 10.1088/1674-1137/38/3/033101

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2013-05-03
Revised: 1900-01-01

Article Metric

Article Views(3828)
PDF Downloads(312)
Cited by(0)

Policy on re-use

To reuse of Open Access content published by CPC, for content published under the terms of the Creative Commons Attribution 3.0 license (“CC CY”), the users don’t need to request permission to copy, distribute and display the final published version of the article and to create derivative works, subject to appropriate attribution.

通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Revisiting the Kπpuzzle in the pQCD factorization approach

Corresponding author:XIAO Zhen-Jun,

1. Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210023, China

Received Date:2013-05-03

Accepted Date:1900-01-01

Available Online:2014-03-05

Abstract:In this paper, we calculated the branching ratios and directCPviolation of the four B→Kπdecays with the inclusion of all currently known next-to-leading order (NLO) contributions by employing the perturbative QCD (pQCD) factorization approach. We found that (a) Besides the 10% enhancement from the NLO vertex corrections, the quark-loops and magnetic penguins, the NLO contributions to the form factors can provide an additional ~15% enhancement to the branching ratios, and lead to a very good agreement with the data; (b) The NLO pQCD predictions areA_CP^sir(B⁰→K⁺π^-)=(-6.5±3.1)% andA_CP^sir(B⁰→K⁺π⁰)=(2.2±2.0)%, become well consistent with the data due to the inclusion of the NLO contributions.

HTML

Reference (1)

Revisiting the Kπpuzzle in the pQCD factorization approach

Abstract：

References

Access

Article Metrics

Metrics

通讯作者:陈斌, bchen63@163.com

Email This Article