EFFECT OF LONGITUDINAL ELECTRON POLARIZATION IN THE MEASUREMENT OF THE TAU WEAK DIPOLE-MOMENT IN E+E- COLLISIONS

被引：9

作者：

ANANTHANARAYAN, B ^{[1
]}

RINDANI, SD ^{[1
]}

机构：

[1] PHYS RES LAB,THEORY GRP,AHMEDABAD 380009,GUJARAT,INDIA

来源：

PHYSICAL REVIEW D | 1994年 / 50卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.50.4447

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that certain CP-odd momentum correlations in the production and subsequent decay of tau pairs in e+e- collisions get enhanced when the electron beam is longitudinally polarized. Analytic expressions for these correlations are obtained when tau+ tau- have a ''weak'' dipole form factor (WDFF) coupling to Z in the case of two-body decay modes of the tau. Expressions of the variance of these correlations due to the standard model interactions are also presented. For e+e- collisions at the Z peak, a sensitivity of about 10(-17) e cm for the real part of the tau WDFF and 3 x 10(-17) e cm for the imaginary part of the tau WDFF can be reached using pi and rho channels (which are the most sensitive channels) in tau decay, with 10(6) Z's likely to be available at the SLC at Stanford with e- polarization of 62%-75%.

引用

页码：4447 / 4453

页数：7

共 27 条

[1] 1ST MEASUREMENT OF THE LEFT-RIGHT CROSS-SECTION ASYMMETRY IN Z-BOSON PRODUCTION BY E+E- COLLISIONS [J].

ABE, K ;

ABT, I ;

ACTON, PD ;

ADOLPHSEN, CE ;

AGNEW, G ;

ALBER, C ;

ALZOFON, DF ;

ANTILOGUS, P ;

ARROYO, C ;

ASH, WW ;

ASHFORD, V ;

ASTBURY, A ;

ASTON, D ;

AU, Y ;

AXEN, DA ;

BACCHETTA, N ;

BAIRD, KG ;

BAKER, W ;

BALTAY, C ;

BAND, HR ;

BARANKO, G ;

BARDON, O ;

BARRERA, F ;

BATTISTON, R ;

BAZARKO, AO ;

BEAN, A ;

BEER, G ;

BELCINSKI, RJ ;

BELL, RA ;

BENDAVID, R ;

BENVENUTI, AC ;

BERGER, R ;

BERRIDGE, SC ;

BETHKE, S ;

BIASINI, M ;

BIENZ, T ;

BILEI, GM ;

BIRD, F ;

BISELLO, D ;

BLAYLOCK, G ;

BLUMBERG, R ;

BOGART, JR ;

BOLTON, T ;

BOUGEROLLE, S ;

BOWER, GR ;

BOYCE, RF ;

BRAU, JE ;

BREIDENBACH, M ;

BROWDER, TE ;

BUGG, WM .

PHYSICAL REVIEW LETTERS, 1993, 70 (17) :2515-2520

[2] TEST OF CP-INVARIANCE IN E+E- -] Z(0)-]TAU+TAU- AND A LIMIT ON THE WEAK DIPOLE-MOMENT OF THE TAU LEPTON [J].

ACTON, PD ;

ALEXANDER, G ;

ALLISON, J ;

ALLPORT, PP ;

ANDERSON, KJ ;

ARCELLI, S ;

ASHTON, P ;

ASTBURY, A ;

AXEN, D ;

AZUELOS, G ;

BAHAN, GA ;

BAINES, JTM ;

BALL, AH ;

BANKS, J ;

BARKER, GJ ;

BARLOW, RJ ;

BATLEY, JR ;

BEAUDOIN, G ;

BECK, A ;

BECKER, J ;

BEHNKE, T ;

BELL, KW ;

BELLA, G ;

BERLICH, P ;

BETHKE, S ;

BIEBEL, O ;

BINDER, U ;

BLOODWORTH, IJ ;

BOCK, P ;

BODEN, B ;

BOSCH, HM ;

BOUGEROLLE, S ;

BRABSON, BB ;

BREUKER, H ;

BROWN, RM ;

BRUN, R ;

BUIJS, A ;

BURCKHART, HJ ;

CAPILUPPI, P ;

CARNEGIE, RK ;

CARTER, AA ;

CARTER, JR ;

CHANG, CY ;

CHARLTON, DG ;

CLARKE, PEL ;

COHEN, I ;

COLLINS, WJ ;

CONBOY, JE ;

COOPER, M ;

COUCH, M .

PHYSICS LETTERS B, 1992, 281 (3-4) :405-415

[3] WEAK DIPOLE-MOMENT OF TAU IN E+E- COLLISIONS WITH LONGITUDINALLY POLARIZED ELECTRONS [J].

ANANTHANARAYAN, B ;

RINDANI, SD .

PHYSICAL REVIEW LETTERS, 1994, 73 (09) :1215-1218

[4] CP VIOLATION AT THE ZETA-0 WITH POLARIZED BEAMS [J].

ATWOOD, WB ;

DUNIETZ, I ;

GROSSEWIESMANN, P .

PHYSICS LETTERS B, 1989, 216 (1-2) :227-232

[5] MULTIPLE BREMSSTRAHLUNG IN GAUGE-THEORIES AT HIGH-ENERGIES .3. FINITE MASS EFFECTS IN COLLINEAR PHOTON BREMSSTRAHLUNG [J].

BERENDS, FA ;

DECAUSMAECKER, P ;

GASTMANS, R ;

KLEISS, R ;

TROOST, W ;

WU, TT .

NUCLEAR PHYSICS B, 1984, 239 (02) :382-394

[6] MULTIPLE BREMSSTRAHLUNG IN GAUGE-THEORIES AT HIGH-ENERGIES .4. THE PROCESS E+E--]GAMMA-GAMMA-GAMMA-GAMMA [J].

BERENDS, FA ;

DECAUSMAECEKER, P ;

GASTMANS, R ;

KLEISS, R ;

TROOST, W ;

WU, TT .

NUCLEAR PHYSICS B, 1984, 239 (02) :395-409

[7] CP-VIOLATING CORRELATIONS IN ELECTRON-POSITRON ANNIHILATION INTO TAU-LEPTONS [J].

BERNREUTHER, W ;

NACHTMANN, O .

PHYSICAL REVIEW LETTERS, 1989, 63 (26) :2787-2790

[8] CP VIOLATION AND Z BOSON DECAYS [J].

BERNREUTHER, W ;

LOW, U ;

MA, JP ;

NACHTMANN, O .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1989, 43 (01) :117-132

[9] A NOTE ON CP-ODD AND T-ODD OBSERVABLES AT E+E- COLLIDERS [J].

BERNREUTHER, W ;

NACHTMANN, O .

PHYSICS LETTERS B, 1991, 268 (3-4) :424-428

[10] CP-VIOLATING EFFECTS IN Z DECAYS TO TAU-LEPTONS [J].

BERNREUTHER, W ;

BOTZ, GW ;

NACHTMANN, O ;

OVERMANN, P .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1991, 52 (04) :567-573

← 1 2 3 →