NORMAL AND TRANSVERSE SINGLE TAU-POLARIZATION AT THE Z-PEAK

被引：49

作者：

BERNABEU, J ^{[1
]}

GONZALEZSPRINBERG, GA ^{[1
]}

VIDAL, J ^{[1
]}

机构：

[1] UNIV VALENCIA,CSIC,IFIC,CTR MIXT,E-46100 BURJASSOT,SPAIN

来源：

PHYSICS LETTERS B | 1994年 / 326卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(94)91209-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study normal (to the collision plane) and transverse (within the collision plane) single-tau polarization in tau pairs produced in e+ e- unpolarized collisions at the Z-resonance. The transverse polarization component is sensitive to the anomalous weak-magnetic moment, whereas the normal polarization component is sensitive to a CP-violating weak-electric dipole moment. We show how these components of the single tau polarization are accessible from the angular distribution of its decay products. We define a CP violating asymmetry of the tau decay products which, with 10(7) Z's produced, provides a sensitivity of 2.3 x 10(-18) e . cm for the weak-electric dipole moment.

引用

页码：168 / 174

页数：7

共 18 条

[1] 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

[2] TAU-POLARIZATION AT THE Z-PEAK FROM THE ACOLLINEARITY BETWEEN BOTH TAU-DECAY PRODUCTS [J].

ALEMANY, R ;

RIUS, N ;

BERNABEU, J ;

GOMEZCADENAS, JJ ;

PICH, A .

NUCLEAR PHYSICS B, 1992, 379 (1-2) :3-23

[3] TAU-SPIN CORRELATIONS AT THE Z-PEAK - APLANARITIES OF THE DECAY PRODUCTS [J].

BERNABEU, J ;

RIUS, N ;

PICH, A .

PHYSICS LETTERS B, 1991, 257 (1-2) :219-226

[4] TAU-ODD CORRELATION ON THE Z0-PEAK [J].

BERNABEU, J ;

RIUS, N .

PHYSICS LETTERS B, 1989, 232 (01) :127-133

[5]

BERNREUTHER W, 1990, PHYS REV LETT, V64, P1072, DOI 10.1103/PhysRevLett.64.1072.2

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

BERNREUTHER, W ;

NACHTMANN, O .

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

[7] 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

[8] CP-VIOLATING ELECTRIC AND WEAK DIPOLE-MOMENTS OF THE TAU LEPTON FROM THRESHOLD TO 500-GEV [J].

BERNREUTHER, W ;

NACHTMANN, O ;

OVERMANN, P .

PHYSICAL REVIEW D, 1993, 48 (01) :78-88

[9] SEARCH FOR CP VIOLATION IN Z-]TAU-TAU [J].

BUSKULIC, D ;

DECAMP, D ;

GOY, C ;

LEES, JP ;

MINARD, MN ;

MOURS, B ;

ALEMANY, R ;

ARIZTIZABAL, F ;

COMAS, P ;

CRESPO, JM ;

DELFINO, M ;

FERNANDEZ, E ;

GAITAN, V ;

GARRIDO, L ;

MATTISON, T ;

PACHECO, A ;

PASCUAL, A ;

CREANZA, D ;

DEPALMA, M ;

FARILLA, A ;

IASELLI, G ;

MAGGI, G ;

MAGGI, M ;

NATALI, S ;

NUZZO, S ;

QUATTROMINI, M ;

RANIERI, A ;

RASO, G ;

ROMANO, F ;

RUGGIERI, F ;

SELVAGGI, G ;

SILVESTRIS, L ;

TEMPESTA, P ;

ZITO, G ;

HU, H ;

HUANG, D ;

HUANG, X ;

LIN, J ;

LOU, J ;

QIAO, C ;

WANG, T ;

XIE, Y ;

XU, D ;

XU, R ;

ZHANG, J ;

ZHAO, W ;

BAUERDICK, LAT ;

BLUCHER, E ;

BONVICINI, G ;

BOSSI, F .

PHYSICS LETTERS B, 1992, 297 (3-4) :459-468

[10] 4 DISTINCT TESTS FOR CP/T VIOLATION IN E-E+-]TAU-TAU+ [J].

GOOZOVAT, S ;

NELSON, CA .

PHYSICS LETTERS B, 1991, 267 (01) :128-131

← 1 2 →