TY - JOUR
T1 - Weak radius of the proton
AU - Horowitz, C. J.
N1 - Publisher Copyright:
© 2018 The Author
PY - 2019/2/10
Y1 - 2019/2/10
N2 - The weak charge of the proton determines its coupling to the Z0 boson. The distribution of weak charge is found to be dramatically different from the distribution of electric charge. The proton's weak radius RW=1.545±0.017 fm is 80% larger than its charge radius Rch≈0.84 fm because of a very large pion cloud contribution. This large weak radius can be measured with parity violating electron scattering and may provide insight into the structure of the proton, various radiative corrections, and possible strange quark contributions.
AB - The weak charge of the proton determines its coupling to the Z0 boson. The distribution of weak charge is found to be dramatically different from the distribution of electric charge. The proton's weak radius RW=1.545±0.017 fm is 80% larger than its charge radius Rch≈0.84 fm because of a very large pion cloud contribution. This large weak radius can be measured with parity violating electron scattering and may provide insight into the structure of the proton, various radiative corrections, and possible strange quark contributions.
UR - http://www.scopus.com/inward/record.url?scp=85059932757&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2018.12.029
DO - 10.1016/j.physletb.2018.12.029
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AN - SCOPUS:85059932757
SN - 0370-2693
VL - 789
SP - 675
EP - 678
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -