How to search for an electric dipole form factor of the. tau. lepton at a. tau. -charm factory
- Lawrence Berkeley Lab., CA (USA)
- Heidelberg Univ. (Germany, F.R.) Stanford Linear Accelerator Center, Menlo Park, CA (USA)
We investigate some CP-odd correlations which can be used to search for an electric dipole form factor d{sub {tau}}(s) of the {tau} in the reaction e{sup +}e{sup {minus}} {yields} {tau}{sup +}{tau} {sup {minus}} at c.m. energies {radical}s relevant for a {tau}-charm factory. These observables require measurement of the {tau} polarizations. Using the channel e{sup +}e{sup {minus}} {yields} {pi}{sup +} {nu}{sub {tau}}{pi}{sup {minus}}{nu}{sub {tau}} one should be able to measure d{sub {tau}} at {radical}s = 4 GeV with an accuracy {delta}(d{sub {tau}}) {approx equal} 2.5 {times} 10{sup {minus}16}e cm, assuming the production of 10{sup 7} {tau} pairs. The same accuracy can be reached with 10{sup 6} {tau} pairs at {radical}s = 10 GeV, the typical c.m. energy of a B-factory. 8 refs., 2 figs., 1 tab.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5522610
- Report Number(s):
- LBL-27467; CONF-8905144-19; ON: DE91014714; TRN: 91-018124
- Resource Relation:
- Conference: Tau-Charm Factory workshop, Stanford, CA (USA), 23-27 May 1989
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TAU PARTICLES
FORM FACTORS
CP INVARIANCE
ELECTRIC DIPOLES
ELECTRON-POSITRON INTERACTIONS
SCATTERING AMPLITUDES
AMPLITUDES
DIPOLES
ELEMENTARY PARTICLES
FERMIONS
HEAVY LEPTONS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-LEPTON INTERACTIONS
LEPTONS
MULTIPOLES
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
POSTULATED PARTICLES
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties