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Nucleon electroweak form factors using spin-improved holographic light-front wavefunctions

文献类型：期刊论文

作者Ahmady, Mohammad3; Chakrabarti, Dipankar2; Mondal, Chandan1,5; Sandapen, Ruben4
刊名NUCLEAR PHYSICS A
出版日期2021-12-01
卷号1016页码:16
关键词Light-front holography Quark-diquark model Electroweak form factors Nucleon
ISSN号0375-9474
DOI10.1016/j.nuclphysa.2021.122334
通讯作者Mondal, Chandan(mondal@impcas.ac.cn)
英文摘要We construct spin-improved holographic light front wavefunctions for the nucleons (viewed as quarkdiquark systems) and use them to successfully predict their electromagnetic Sachs form factors, their electromagnetic charge radii, as well as the axial form factor, charge and radius of the proton. The confinement scale is the universal mass scale of light-front holography, previously extracted from spectroscopic data for light hadrons. With the Dirac and Pauli form factors normalized using the quark counting rules and the measured anomalous magnetic moments respectively, the masses of the quark and diquark are the only remaining adjustable parameters. We fix them using the data set for the proton's Dirac-to-Pauli form factor ratio, and then predict all other data without any further adjustments of parameters. Agreement with data at low momentum-transfer is excellent. Our findings support the idea that light (pseudoscalar and vector) mesons and the nucleons share a nonperturbative universal holographic light-front wavefunction which is modified differently by their spin structures. (c) 2021 Elsevier B.V. All rights reserved.
WOS关键词POLARIZATION TRANSFER ; CHARGE RADIUS ; NEUTRON ; PROTON ; SCATTERING
资助项目Natural Sciences and Engineering Research Council of Canada (NSERC)[SAPIN-2021-00038] ; Natural Sciences and Engineering Research Council of Canada (NSERC)[SAPIN-2020-00051] ; Science and Engineering Research Board (India)[CRG/2019/000895] ; Institute of Modern Physics, Chinese Academy of Sciences[E129952YR0] ; Chinese Academy of Sciences President's International Fellowship Initiative[2021PM0023]
WOS研究方向Physics
语种英语
WOS记录号WOS:000706480900010
出版者ELSEVIER
资助机构Natural Sciences and Engineering Research Council of Canada (NSERC) ; Science and Engineering Research Board (India) ; Institute of Modern Physics, Chinese Academy of Sciences ; Chinese Academy of Sciences President's International Fellowship Initiative
源URL[http://119.78.100.186/handle/113462/136235]  
专题中国科学院近代物理研究所
通讯作者Mondal, Chandan
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Indian Inst Technol Kanpur, Dept Phys, Kanpur 208016, Uttar Pradesh, India
3.Mt Allison Univ, Dept Phys, Sackville, NB E4L 1E6, Canada
4.Acadia Univ, Dept Phys, Wolfville, NS B4P 2R6, Canada
5.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Ahmady, Mohammad,Chakrabarti, Dipankar,Mondal, Chandan,et al. Nucleon electroweak form factors using spin-improved holographic light-front wavefunctions[J]. NUCLEAR PHYSICS A,2021,1016:16.
APA Ahmady, Mohammad,Chakrabarti, Dipankar,Mondal, Chandan,&Sandapen, Ruben.(2021).Nucleon electroweak form factors using spin-improved holographic light-front wavefunctions.NUCLEAR PHYSICS A,1016,16.
MLA Ahmady, Mohammad,et al."Nucleon electroweak form factors using spin-improved holographic light-front wavefunctions".NUCLEAR PHYSICS A 1016(2021):16.

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来源：近代物理研究所

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