Bounds on radii and anomalous magnetic dipole moments of quarks and leptons from LEP, SLC and HERA

Autor: Köpp, G., Schaile, D., Spira, M., Zerwas, P. M.
Jazyk: angličtina
Rok vydání: 1995
Předmět:
annihilation: electron positron
interaction: electron quark
electron p: interaction
annihilation [electron positron]
charged current
polarization: asymmetry
quark [magnetic moment]
pair production: fermion
quark: magnetic moment
magnetic moment [quark]
Z0: decay modes
electron quark [interaction]
lepton: magnetic moment
interaction [electron p]
electron quark: interaction
asymmetry [angular distribution]
asymmetry [polarization]
decay modes: Z0
lepton: form factor
interaction: electron p
upper limit
pair production [fermion]
asymmetry: angular distribution
angular distribution: asymmetry
neutral current
electron positron: annihilation
form factor [lepton]
lepton [magnetic moment]
polarization [asymmetry]
asymmetry: polarization
numerical calculations: interpretation of experiments
interaction [electron quark]
magnetic moment: lepton
magnetic moment [lepton]
interpretation of experiments [numerical calculations]
quark: form factor
ddc:530
Z0: width
lepton [form factor]
electron positron [annihilation]
electron p [interaction]
fermion [pair production]
fermion: pair production
decay modes [Z0]
form factor [quark]
Z0 [decay modes]
form factor: quark
form factor: lepton
width [Z0]
quark [form factor]
magnetic moment: quark
angular distribution [asymmetry]
DOI: 10.3204/PUBDB-2023-00695
Popis: 10 pp. (1995).
Leptons, quarks and gauge bosons are assumed to be pointlike particles in the Standard Model. Stringent bounds on the radii of quarks and leptons and their weak anomalous magnetic moments can be derived from the high-precision measurements at LEP and SLC. We find a model-independent bound ofR≲10−17 cm for quark and lepton radii. HERA will provide complementary information on the electromagnetic static properties of the quarks and the parameters of the charged quark currents.
Databáze: OpenAIRE
Externí odkaz: