Diquark mass differences from unquenched lattice QCD

Yujiang Bi; Hao Cai; Ying Chen; Ming Gong; Zhaofeng Liu; Hao-Xue Qiao; Yi-Bo Yang

doi:10.1088/1674-1137/40/7/073106

Chinese Physics C> 2016, Vol. 40> Issue(7) : 073106 DOI: 10.1088/1674-1137/40/7/073106

Diquark mass differences from unquenched lattice QCD

Abstract
HTML
Reference
Related

PDF

Abstract：
We calculate diquark correlation functions in the Landau gauge on the lattice using overlap valence quarks and 2+1-flavor domain wall fermion configurations. Quark masses are extracted from the scalar part of quark propagators in the Landau gauge. The scalar diquark quark mass difference and axial vector scalar diquark mass difference are obtained for diquarks composed of two light quarks and of a strange and a light quark. The light sea quark mass dependence of the results is examined. Two lattice spacings are used to check the discretization effects. The coarse and fine lattices are of sizes 24³×64 and 32³×64 with inverse spacings 1/a=1.75(4) GeV and 2.33(5) GeV, respectively.
- lattice QCD ,
- diquarks ,
- overlap fermions ,
- Landau gauge

References

[1]	M. Anselmino, E. Predazzi, S. Ekelin, S. Fredriksson, and D. B. Lichtenberg, Rev. Mod. Phys., 65:1199(1993)
[2]	H. G. Dosch, M. Jamin, and B. Stech, Z. Phys. C, 42:167(1989)
[3]	M. Neubert, and B. Stech, Phys. Rev. D, 44:775(1991)
[4]	S. K. Choi et al (Belle Collaboration), Phys. Rev. Lett., 91:262001(2003)
[5]	K. A. Olive et al (Particle Data Group Collaboration), Chin. Phys. C, 38:090001(2014)
[6]	M. Hess, F. Karsch, E. Laermann, and I. Wetzorke, Phys. Rev. D, 58:111502(1998)
[7]	C. Alexandrou, Ph. de Forcrand, and B. Lucini, Phys. Rev. Lett., 97:222002(2006)
[8]	R. Babich, N. Garron, C. Hoelbling, J. Howard, L. Lellouch, and C. Rebbi, Phys. Rev. D, 76:074021(2007)
[9]	K. Orginos, PoS LAT2005:054(2006)
[10]	Z. Fodor, C. Hoelbling, M. Mechtel, and K. Szabo, PoS LAT2005:310(2006)
[11]	T. DeGrand, Z. Liu, and S. Schaefer, Phys. Rev. D, 77:034505(2008)
[12]	J. Green, J. Negele, M. Engelhardt, and P. Varilly, PoS LATTICE 2010:140(2010)
[13]	R. T. Kleiv, T. G. Steele, A. Zhang, and I. Blokland, Phys. Rev. D, 87 (12):125018(2013)
[14]	Z. G. Wang, Commun. Theor. Phys., 59:451(2013)
[15]	L. Tang and X. Q. Li, Chin. Phys. C, 36:578(2012)
[16]	R. L. Jaffe, Phys. Rept., 409:1(2005)
[17]	T. A. DeGrand, R. L. Jaffe, K. Johnson, and J. E. Kiskis, Phys. Rev. D, 12:2060(1975).
[18]	G. 't Hooft, Phys. Rev. D, 14:3432(1976); Phys. Rev. D, 18:2199(1978)
[19]	T. Schfer and E. V. Shuryak, Rev. Mod. Phys., 70:323(1998)
[20]	Y. Aoki et al (RBC and UKQCD Collaborations), Phys. Rev. D, 83:074508(2011)
[21]	Y. B. Yang et al, Phys. Rev. D, 92 (3):034517(2015)
[22]	H. Neuberger, Phys. Lett. B, 417:141(1998)
[23]	T. W. Chiu and S. V. Zenkin, Phys. Rev. D, 59:074501(1999)
[24]	Z. Liu et al (chiQCD Collaboration), Phys. Rev. D, 90 (3):034505(2014)
[25]	J. Gasser, M. E. Sainio and A. Svarc, Nucl. Phys. B, 307:779(1988)
[26]	M. Gong et al (XQCD Collaboration), Phys. Rev. D, 88:014503(2013)
[27]	K. F. Liu, Y. Chen, M. Gong, R. Sufian, M. Sun, and A. Li, PoS LATTICE 2013:507(2014)
[28]	C. W. Bernard, D. Murphy, A. Soni, and K. K. Yee, Nucl. Phys. Proc. Suppl., 17:593(1990)

[1]	Lin Gao , Heping Ying , Jianbo Zhang . Study of the topological quantities of lattice QCD using a modified DCGAN frame. Chinese Physics C, 2024, 48(5): 053111. doi: 10.1088/1674-1137/ad2b51
[2]	Dong-Hao Li , Ying Chen , Ming Gong , Keh-Fei Liu , Zhaofeng Liu , Ting-Xiao Wang , (χQCD Collaboration) . Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations. Chinese Physics C, 2024, 48(12): 123104. doi: 10.1088/1674-1137/ad736f
[3]	Qi-An Zhang , Jun Hua , Fei Huang , Renbo Li , Yuanyuan Li , Caidian Lü , Peng Sun , Wei Sun , Wei Wang , Yibo Yang . First lattice QCD calculation of semileptonic decays of charmed-strange baryons Ξ_c. Chinese Physics C, 2022, 46(1): 011002. doi: 10.1088/1674-1137/ac2b12
[4]	Ying Chen , Wei-Feng Chiu , Ming Gong , Zhaofeng Liu , Yunheng Ma , (χQCD Collaboration) . Charmed and ϕ meson decay constants from 2+1-flavor lattice QCD. Chinese Physics C, 2021, 45(2): 023109. doi: 10.1088/1674-1137/abcd8f
[5]	Zhen Cheng , Jian-Bo Zhang , Guang-Yi Xiong . Calculation of disconnected quark loops in lattice QCD. Chinese Physics C, 2020, 44(3): 033104. doi: 10.1088/1674-1137/44/3/033104
[6]	Jingyi Chao . Phase diagram of two-color QCD matter at finite baryon and axial isospin densities. Chinese Physics C, 2020, 44(3): 034108. doi: 10.1088/1674-1137/44/3/034108
[7]	Wei Sun , Andrei Alexandru , Ying Chen , Terrence Draper , Zhaofeng Liu , Yi-Bo Yang . Anatomy of the ρ resonance from lattice QCD at the physical poin. Chinese Physics C, 2018, 42(6): 063102. doi: 10.1088/1674-1137/42/6/063102
[8]	Yue-Liang Wu . Maximal symmetry and mass generation of Dirac fermions and gravitational gauge field theory in six-dimensional spacetime. Chinese Physics C, 2017, 41(10): 103106. doi: 10.1088/1674-1137/41/10/103106
[9]	Bin Zhou , Zhi-Feng Sun , Xiang Liu , Shi-Lin Zhu . Chiral corrections to the 1^-+ exotic meson mass. Chinese Physics C, 2017, 41(4): 043101. doi: 10.1088/1674-1137/41/4/043101
[10]	You-Hao Zou , Jian-Bo Zhang , Guang-Yi Xiong , Ying Chen , Chuan Liu , Yu-Bin Liu , Jian-Ping Ma . Investigating the topological structure of quenched lattice QCD with overlap fermions using a multi-probing approximation. Chinese Physics C, 2017, 41(10): 103104. doi: 10.1088/1674-1137/41/10/103104
[11]	Chao Wang , Yujiang Bi , Hao Cai , Ying Chen , Ming Gong , Zhaofeng Liu . Quark chiral condensate from the overlap quark propagator. Chinese Physics C, 2017, 41(5): 053102. doi: 10.1088/1674-1137/41/5/053102
[12]	FU Zi-Wen . I=1/2 low-lying mesons in lattice QCD. Chinese Physics C, 2015, 39(8): 083101. doi: 10.1088/1674-1137/39/8/083101
[13]	WANG Rui , CHEN Ying , GONG Ming , LIU Chuan , LIU Yu-Bin , LIU Zhao-Feng , MA Jian-Ping , MENG Xiang-Fei , ZHANG Jian-Bo . Phase transition in finite density and temperature lattice QCD. Chinese Physics C, 2015, 39(6): 063103. doi: 10.1088/1674-1137/39/6/063103
[14]	TANG Liang , LI Xue-Qian . Discussions on the stability of diquarks. Chinese Physics C, 2012, 36(7): 578-584. doi: 10.1088/1674-1137/36/7/002
[15]	FU Zi-Wen , Carleton DeTar . Full lattice QCD study of the κ scalar meson. Chinese Physics C, 2011, 35(12): 1079-1083. doi: 10.1088/1674-1137/35/12/001
[16]	S. Aoki (for HAL QCD collaboration) . Baryon-Baryon interactions from lattice QCD. Chinese Physics C, 2010, 34(9): 1236-1240. doi: 10.1088/1674-1137/34/9/016
[17]	C. Alexandrou . Baryon structure from Lattice QCD. Chinese Physics C, 2009, 33(12): 1093-1101. doi: 10.1088/1674-1137/33/12/008
[18]	Zheng Xite , Xu Yong . Analytic Study of SU(3) Lattice Gauge Theory. Chinese Physics C, 1989, 13(S3): 249-252.
[19]	Luo Xiangqian , Chen Qizhou , Guo Shuohong . Vacuum State of 2+1 Dimensional SU(2) Lattice Gauge Theory With Fermions and Spontaneous Chiral Symmetry Breaking. Chinese Physics C, 1989, 13(S2): 157-164.
[20]	Xue Shesheng . A Mean Field Solution of the Fokker-Planck Equation in Lattice Gauge Theories. Chinese Physics C, 1988, 12(S2): 117-122.

Access

Get Citation

Yujiang Bi, Hao Cai, Ying Chen, Ming Gong, Zhaofeng Liu, Hao-Xue Qiao and Yi-Bo Yang. Diquark mass differences from unquenched lattice QCD[J]. Chinese Physics C, 2016, 40(7): 073106. doi: 10.1088/1674-1137/40/7/073106

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2015-10-27
Revised: 2016-03-04

Fund

Supported by National Science Foundation of China (11575197, 10835002, 11405178, 11335001), joint funds of NSFC (U1232109), MG and ZL are partially supported by the Youth Innovation Promotion Association of CAS (2015013, 2011013), YC and ZL acknowledge support of NSFC and DFG (CRC110)

Article Metric

Article Views(1742)
PDF Downloads(15)
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

Diquark mass differences from unquenched lattice QCD

Corresponding author: Yujiang Bi,

Corresponding author: Hao Cai,

Corresponding author: Zhaofeng Liu,

Received Date: 2015-10-27

Accepted Date: 2016-03-04

Available Online: 2016-07-05

Fund Project: Supported by National Science Foundation of China (11575197, 10835002, 11405178, 11335001), joint funds of NSFC (U1232109), MG and ZL are partially supported by the Youth Innovation Promotion Association of CAS (2015013, 2011013), YC and ZL acknowledge support of NSFC and DFG (CRC110)

Abstract: We calculate diquark correlation functions in the Landau gauge on the lattice using overlap valence quarks and 2+1-flavor domain wall fermion configurations. Quark masses are extracted from the scalar part of quark propagators in the Landau gauge. The scalar diquark quark mass difference and axial vector scalar diquark mass difference are obtained for diquarks composed of two light quarks and of a strange and a light quark. The light sea quark mass dependence of the results is examined. Two lattice spacings are used to check the discretization effects. The coarse and fine lattices are of sizes 24³×64 and 32³×64 with inverse spacings 1/a=1.75(4) GeV and 2.33(5) GeV, respectively.

HTML

Reference (28)

Diquark mass differences from unquenched lattice QCD

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article