Study of pure annihilation decays Bd,s→D0D0

LI Ying; HUA Juan

doi:10.1088/1674-1137/32/10/003

Chinese Physics C> 2008, Vol. 32> Issue(10) : 781-787 DOI: 10.1088/1674-1137/32/10/003

Study of pure annihilation decays B_d,s→D⁰D⁰

LI Ying ^, ,
HUA Juan

Abstract
HTML
Reference
Related

PDF

Abstract：
Within the heavy quark limit and the hierarchy approximation λ_QCD<< m_D<B, we analyze the B→D⁰D⁰ and B_s→D⁰D⁰ decays, which occur purely via annihilation type diagrams. As a rough estimate, we calculate their branching ratios and CP asymmetries in the perturbative QCD (PQCD) approach. The branching ratio of B→D⁰D⁰ is about 3.8×10^－5 that is just below the latest experimental upper limit. The branching ratio of B_s→D⁰D⁰ is about 6.8×10^－4, which could be measured in LHC-b. From the calculation, it is found that this branching ratio is not sensitive to the weak phase angle γ. In these two decay modes, there exist CP asymmetries because of the interference between weak and strong interaction. However, these asymmetries are too small to be measured easily.

References

[1]

. YAO W M et al. (Particle Data Group). J. Phys. G, 2006,33: 12. Savage M J, Wise M B. Phys. Rev. D, 1989, 39: 3346; D,1989, 40: 31273. XING Z Z. Phys. Rev. D, 2000, 61: 014010. arXiv:hep-ph/99074554. XING Z Z. Phys. Lett. B, 1998, 443: 365. arXiv:hep-ph/98094965. CHEN C H, GENG C Q, WEI Z T. Eur. Phys. J C, 2006,46: 367. arXiv:hep-ph/05072956. Eeg J O, Fajfer S, Hiorth A. Springer Proc. Phys., 2005, 98:457. arXiv:hep-ph/0307042; Eeg J O, Fajfer S, Prapotnik A. Eur. Phys. J C, 2005, 42: 29. arXiv:hep-ph/05010317. Beneke M et al. Phys. Rev. Lett., 1999, 83: 1914.arXiv:hep-ph/9905312; Beneke M et al. Nucl. Phys. B,2000, 591: 313. arXiv:hep-ph/00061248. Bauer C W, Pirjol D, Stewart I W. Phys. Rev. D, 2002,65: 054022. arXiv:hep-ph/0109045; Bauer C W et al. Phys.Rev. D, 2004, 70: 054015. arXiv:hep-ph/04011889. Keum Y Y et al. Phys. Rev. D, 2004, 69: 094018.arXiv:hep-ph/030533510. LU C D. Phys. Rev. D, 2003, 68: 097502. arXiv:hep-ph/0307040; LU C D, Ukai K. Eur. Phys. J C, 2003, 28:305. arXiv:hep-ph/0210206; LI Y, LU C D. J. Phys. G,2003, 29: 2115. arXiv:hep-ph/0304288; LI Y, LU C D. HEP NP, 2003, 27: 1062 (in Chinese). arXiv:hep-ph/0305278;LI Y, LU C D, XIAO Z J. J. Phys. G, 2005, 31: 273.arXiv:hep-ph/030824311. Keum Y Y, LI H N, Sanda A I. Phys. Lett. B, 2001, 504:6. arXiv:hep-ph/0004004; Keum Y Y, LI H N, Sanda A I.Phys. Rev. D, 2001, 63: 054008. arXiv:hep-ph/000417312. LU C D, Ukai K, YANG M Z. Phys. Rev. D, 2001, 63:074009. arXiv:hep-ph/0004213; LU C D, YANG M Z. Eur.Phys. J C, 2002, 23: 275. arXiv:hep-ph/001123813. Ali A et al. Phys. Rev. D, 2007, 76: 074018. arXiv:hep-ph/070316214. Buchalla G, Buras A J, Lautenbacher M E. Rev. Mod.Phys., 1996, 68: 1125. arXiv:hep-ph/951238015. CHEN C H. Phys. Lett. B, 2003, 560: 178. arXiv:hep-ph/030115416. Follana E et al.(HPQCD Collaboration). arXiv:0706.1726[hep-lat]17. Aubert B et al. (BABAR Collaboration). Phys. Rev. D,2006, 73: 112004. arXiv:hep-ex/060403718. Abe K et al. (Belle Collaboration). arXiv:0708.1668 [hep-ex]19. CHENG H Y, CHUA C K, Sony A. Phys. Rev. D, 2005,71: 014030. arXiv:hep-ph/0409317; LU C D, SHEN Y L,WANG W. Phys. Rev. D, 2006, 73: 03400520. LI H N, Mishima S, Sanda A I. Phys. Rev. D, 2005, 72:114005. arXiv:hep-ph/050804121. LI H N, Mishima S. Phys. Rev. D, 2006, 74: 094020.arXiv:hep-ph/0608277

[1]	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
[2]	Yu Tian , Ze Zhao , Ai-Lin Zhang . Study of radially excited D_s(2¹S₀) and D_s(3P). Chinese Physics C, 2017, 41(8): 083107. doi: 10.1088/1674-1137/41/8/083107
[3]	M. Imran Jamil , Bilal Masud , Faisal Akram , S. M. Sohail Gilani . D⁰D^0* (D⁰D^0*) system in QCD-improved many body potential. Chinese Physics C, 2017, 41(1): 013103. doi: 10.1088/1674-1137/41/1/013103
[4]	Ying Li , Dan-Dan Wang , Cai-Dian Lü . Pure annihilation type B→K0±(1430)K()^干 decays in the family non-universal Z0 model. Chinese Physics C, 2016, 40(1): 013101. doi: 10.1088/1674-1137/40/1/013101
[5]	ZHANG Zhi-Qing , WANG Shi-Jian , ZHANG Li-Ying . Branching ratio and CP asymmetry 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
[6]	ZOU Zhi-Tian , LI Cheng , LÜ Cai-Dian . Pure annihilation type D→PP(V) decays in the perturbative QCD approach. Chinese Physics C, 2013, 37(9): 093101. doi: 10.1088/1674-1137/37/9/093101
[7]	ZOU Zhi-Tian , ZHOU Rui , LÜ Cai-Dian . Pure annihilation type decays B⁰→D_s^- K₂^*+ and B_s→Da₂ in perturbative QCD approach. Chinese Physics C, 2013, 37(1): 013103. doi: 10.1088/1674-1137/37/1/013103
[8]	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
[9]	XING Zhi-Zhong . A test of CPT symmetry in K⁰ vs K⁰→π⁺π^－π⁰ decays. Chinese Physics C, 2010, 34(6): 753-756. doi: 10.1088/1674-1137/34/6/024
[10]	B. Meadows (representing the BABAR collaboration) . D⁰D⁰ mixing and other recent charm results from BABAR. Chinese Physics C, 2010, 34(6): 780-787. doi: 10.1088/1674-1137/34/6/028
[11]	K. I. Beloborodov , A. V. Berdyugin , A. A. Botov , V. B. Golubev , T. V. Dimova , V. P. Druzhinin , A. G. Kharlamov , D. P. Kovrizhin , I. A. Koop , A. A. Korol , S. V. Koshuba , A. E. Obrazovsky , E. V. Pakhtusova , D. A. Shtol , S. I. Serednyakov , Z. K. Silagadze , A. N. Skrinsky , Yu. A. Tikhonov , Yu. M. Shatunov , A. V. Vasil'ev . Study of the process e⁺e^－→π⁺π^－π⁰π⁰ at energies √s<1 GeV. Chinese Physics C, 2010, 34(6): 680-685. doi: 10.1088/1674-1137/34/6/012
[12]	ZHANG Zhi-Qing , XIAO Zhen-Jun . Study of scalar meson a₀(980) from B→a₀(980)π decays. Chinese Physics C, 2010, 34(5): 528-534. doi: 10.1088/1674-1137/34/5/002
[13]	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
[14]	HUANG Bin , ZHENG Yang-Heng , LI Wei-Dong . A simulation study on the measurement of D⁰-D⁰ mixing parameter y at BESⅢ. Chinese Physics C, 2008, 32(12): 945-951. doi: 10.1088/1674-1137/32/12/002
[15]	WANG Ru-Min , LU Gong-Ru , WANG En-Ke , YANG Ya-Dong . Probe the R-Parity Violating Supersymmetry Effects in the B0s—B0s Mixing. Chinese Physics C, 2007, 31(4): 332-336.
[16]	LU GoNG-Ru , WANG Ru-Min , YANG Ya-Dong . Analysis of the Annihilation Decays B0s,d→J/ψ γ with QCD Factorization. Chinese Physics C, 2005, 29(3): 232-236.
[17]	. Study of Exclusive Hadronic Decays for D0→Ks0π+π- and D0→Ks0K+K- and Their Resonant Structures. Chinese Physics C, 2004, 28(1): 1-10.
[18]	XING Zhi-Zhong . Possible Implications of Small or Large CP Violation in Bd0 vs Bd0→J/ψKS Decays. Chinese Physics C, 2002, 26(3): 197-200.
[19]	BES Collaboration . Study of J/ψ、γπ⁰π⁰ at BES. Chinese Physics C, 1999, 23(8): 745-752.
[20]	MA ZHONG-QI , DONG FANG-XIAO , YUE ZONG-WU , ZHOU XIAN-JIAN , XUE PEI-YOU . D⁰-MESON DECAYS Γ（D⁰→K⁺K^-）/Γ（D⁰→π⁺π^-）. Chinese Physics C, 1981, 5(1): 130-133.

Access

Get Citation

LI Ying and HUA Juan. Study of pure annihilation decays B_d,s→D⁰D⁰[J]. Chinese Physics C, 2008, 32(10): 781-787. doi: 10.1088/1674-1137/32/10/003

LI Ying and HUA Juan. Study of pure annihilation decays B_d,s→D⁰D⁰[J]. Chinese Physics C, 2008, 32(10): 781-787. doi: 10.1088/1674-1137/32/10/003 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2007-11-23
Revised: 2008-03-10

Article Metric

Article Views(3035)
PDF Downloads(690)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

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

Study of pure annihilation decays B_d,s→D⁰D⁰

Corresponding author: LI Ying,

Received Date: 2007-11-23

Accepted Date: 2008-03-10

Available Online: 2008-10-05

Abstract:

Within the heavy quark limit and the hierarchy approximation λ_QCD<< m_D<B, we analyze the B→D⁰D⁰ and B_s→D⁰D⁰ decays, which occur purely via annihilation type diagrams. As a rough estimate, we calculate their branching ratios and CP asymmetries in the perturbative QCD (PQCD) approach. The branching ratio of B→D⁰D⁰ is about 3.8×10^－5 that is just below the latest experimental upper limit. The branching ratio of B_s→D⁰D⁰ is about 6.8×10^－4, which could be measured in LHC-b. From the calculation, it is found that this branching ratio is not sensitive to the weak phase angle γ. In these two decay modes, there exist CP asymmetries because of the interference between weak and strong interaction. However, these asymmetries are too small to be measured easily.

HTML

Reference (1)

Study of pure annihilation decays B_d,s→D⁰D⁰

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Study of pure annihilation decays B_d,s→D⁰D⁰

Corresponding author: LI Ying,

HTML

目录