Analysis of Λb→pK- and pπ- decays in a flavor changing Z' mode

WANG Shuai-Wei; HUANG Jin-Shu; LI Gen-Quan

doi:10.1088/1674-1137/37/6/063103

Chinese Physics C> 2013, Vol. 37> Issue(6) : 063103 DOI: 10.1088/1674-1137/37/6/063103

Analysis of Λ_b→pK^- and pπ^- decays in a flavor changing Z' mode

Abstract
HTML
Reference
Related

PDF

Abstract：
In this paper, we calculate the branching ratios of Λ_b→pK^- and pπ^- decays in the avor changing Z' model. We nd that the branching ratios for these two decay modes are sensitive to the contributions of the Z' boson. For Λ_b→pK^- decay, if the left-handed couplings are equal to the right-handed couplings, the branching ratio of this decay could match up to the currently experimental data for ξ_s=0.01 and -52°<φ_s^L<132°, or ξ_s=0.004 and 0°<φ_s^L<84°; if only the left-handed couplings are considered, it could match up to the experimental data for ξ_s=0.01 and -10°φ_s^L<138°. And for Λ_b→pK^- decay, if the left-handed and right-handed couplings are equal, the branching ratio of Λ_b→pK^- decay may be consistent with the currently experimental data with ξ_d=0.05 and -135°φ_d^L<43°, if only the left-handed couplings are considered, it may be consistent with ξ_d=0.05 and -114°φ_d^L<8°.

[1]	Zhi-Hui Wang , Yi Zhang , Tian-Hong Wang , Yue Jiang , Qiang Li , Guo-Li Wang . Strong decays of P-wave mixing heavy-light 1⁺ states. Chinese Physics C, 2018, 42(12): 123101. doi: 10.1088/1674-1137/42/12/123101
[2]	Xiao-Gang He , Wei Wang . Flavor SU(3) topological diagram and irreducible representation amplitudes for heavy meson charmless hadronic decays: mismatch and equivalence. Chinese Physics C, 2018, 42(10): 103108. doi: 10.1088/1674-1137/42/10/103108
[3]	Yong Tang , Yue-Liang Wu . Flavor non-universal gauge interactions and anomalies in B-meson decays. Chinese Physics C, 2018, 42(3): 033104. doi: 10.1088/1674-1137/42/3/033104
[4]	D. Banerjee , S. Sahoo . Analysis of λ_b→λ l⁺l^- rare decays in a non-universal Z' model. Chinese Physics C, 2017, 41(8): 083101. doi: 10.1088/1674-1137/41/8/083101
[5]	Sergey Dubovichenko , Nassurlla Burtebayev , Albert Dzhazairov-Kakhramanov , Denis Zazulin , Zhambul Kerimkulov , Marzhan Nassurlla , Chingis Omarov , Alesya Tkachenko , Tatyana Shmygaleva , Stanislaw Kliczewski , Turlan Sadykov . New measurements and phase shift analysis of p¹⁶O elastic scattering at astrophysical energies. Chinese Physics C, 2017, 41(1): 014001. doi: 10.1088/1674-1137/41/1/014001
[6]	R. Aaij , et al (LHCb Collaboration) . Study of the production of Λ_b⁰ and B⁰ hadrons in pp collisions and first measurement of the Λ_b⁰→J/ψpK^- branching fraction. Chinese Physics C, 2016, 40(1): 011001. doi: 10.1088/1674-1137/40/1/011001
[7]	SUN Jian-Ping , ZHANG Zheng-Jun , HAN Yin-Lu . Calculation and analysis of cross-sections for p+¹⁸⁴W reactions up to 200 MeV. Chinese Physics C, 2015, 39(8): 084102. doi: 10.1088/1674-1137/39/8/084102
[8]	ZHANG Zhi-Qing , FU Jian-Hua . Analysis of B→a₁(1260)(b₁(1235))K^* decays in the perturbative QCD approach. Chinese Physics C, 2015, 39(3): 033102. doi: 10.1088/1674-1137/39/3/033102
[9]	HUANG Liang-Sheng , Yoshiro Irie , LIU Yu-Dong , WANG Sheng . Mode error analysis of impedance measurement using twin wires. Chinese Physics C, 2015, 39(3): 037003. doi: 10.1088/1674-1137/39/3/037003
[10]	ZHANG Cong , HE Yuan , ZHAO Hong-Wei , ZHANG Sheng-Hu . Multipacting simulation and analysis of a taper quarter wave cavity by using Analyst-PT3P. Chinese Physics C, 2012, 36(4): 362-366. doi: 10.1088/1674-1137/36/4/012
[11]	LI Bao-Fei , CHEN Xiao-Lin , DENG Wei-Zhen . Study on the mechanism of open-flavor strong decays. Chinese Physics C, 2012, 36(2): 106-116. doi: 10.1088/1674-1137/36/2/002
[12]	CHAO Wei . Neutrino masses and lepton-flavor-violating τ decays in the supersymmetric left-right model. Chinese Physics C, 2011, 35(3): 214-222. doi: 10.1088/1674-1137/35/3/002
[13]	D. R. Entem , F. Fernandez . D_s₁(2536)⁺decays and the structure of P-wave charmed strange mesons. Chinese Physics C, 2010, 34(9): 1408-1410. doi: 10.1088/1674-1137/34/9/056
[14]	WANG Shuai-Wei , YANG Xing-Qiang , LI Gen-Quan , HUANG Jin-Shu . B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model. Chinese Physics C, 2010, 34(5): 539-542. doi: 10.1088/1674-1137/34/5/004
[15]	KANG Xian-Wei , LI Hai-Bo , LU Gong-Ru , ZOU Bing-Song . Partial wave analysis of ψ′→γχ_c0→γpK^－Λ used for searching for baryon resonance. Chinese Physics C, 2010, 34(8): 1061-1068. doi: 10.1088/1674-1137/34/8/005
[16]	WANG You-Bao , QIN Xing , WANG Bao-Xiang , LIU Wei-Ping , LI Zhi-Hong , BAI Xi-Xiang , LIAN Gang , GUO Bing , ZENG Sheng , SU Jun , LI Yun-Ju , JIANG Chao . Simulation and analysis of ¹³N+p elastic resonance scattering. Chinese Physics C, 2009, 33(3): 181-186. doi: 10.1088/1674-1137/33/3/004
[17]	LIU Xiang . Strong decays of newly observed heavy flavor hadrons. Chinese Physics C, 2009, 33(6): 473-480. doi: 10.1088/1674-1137/33/6/014
[18]	Liu Bo , Zhao Weiqin . Analysis of the New Data of Transverse Energy Distributions in High Energy p-A Collisions Based on Geometrical Model. Chinese Physics C, 1994, 18(S4): 385-390.
[19]	Jin Changhao . Down-Quark Masses and Flavor Mixing. Chinese Physics C, 1988, 12(S1): 59-68.
[20]	WU Dan-Di , LI Tie-Zhong . HOW TO MAKE p→μ⁺η THE MAIN MODE OF PROTON DECAY. Chinese Physics C, 1984, 8(6): 777-780.

Access

Get Citation

WANG Shuai-Wei, HUANG Jin-Shu and LI Gen-Quan. Analysis of Λ_b→pK^- and pπ^- decays in a flavor changing Z' mode[J]. Chinese Physics C, 2013, 37(6): 063103. doi: 10.1088/1674-1137/37/6/063103

WANG Shuai-Wei, HUANG Jin-Shu and LI Gen-Quan. Analysis of Λ_b→pK^- and pπ^- decays in a flavor changing Z' mode[J]. Chinese Physics C, 2013, 37(6): 063103. doi: 10.1088/1674-1137/37/6/063103 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2012-07-26
Revised: 2012-09-09

Article Metric

Article Views(2033)
PDF Downloads(248)
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

Analysis of Λ_b→pK^- and pπ^- decays in a flavor changing Z' mode

Corresponding author: WANG Shuai-Wei,

Corresponding author: HUANG Jin-Shu,

Received Date: 2012-07-26
Accepted Date: 2012-09-09
Available Online: 2013-06-05

Abstract: In this paper, we calculate the branching ratios of Λ_b→pK^- and pπ^- decays in the avor changing Z' model. We nd that the branching ratios for these two decay modes are sensitive to the contributions of the Z' boson. For Λ_b→pK^- decay, if the left-handed couplings are equal to the right-handed couplings, the branching ratio of this decay could match up to the currently experimental data for ξ_s=0.01 and -52°<φ_s^L<132°, or ξ_s=0.004 and 0°<φ_s^L<84°; if only the left-handed couplings are considered, it could match up to the experimental data for ξ_s=0.01 and -10°φ_s^L<138°. And for Λ_b→pK^- decay, if the left-handed and right-handed couplings are equal, the branching ratio of Λ_b→pK^- decay may be consistent with the currently experimental data with ξ_d=0.05 and -135°φ_d^L<43°, if only the left-handed couplings are considered, it may be consistent with ξ_d=0.05 and -114°φ_d^L<8°.