ANGULAR-CORRELATIONS AND DISTRIBUTIONS FOR SEARCHES OF CP VIOLATION IN TOP QUARK PRODUCTION AND DECAY

被引：112

作者：

BERNREUTHER, W

NACHTMANN, O

OVERMANN, P

SCHRODER, T

机构：

[1] Institut für Theoretische Physik, Universität Heidelberg, D-6900 Heidelberg

来源：

NUCLEAR PHYSICS B | 1992年 / 388卷 / 01期

关键词：

D O I：

10.1016/0550-3213(92)90545-M

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Investigation of the ttBAR system at future colliders will offer an excellent opportunity to test the CP symmetry at high energies; viz. to search for CP-violating interactions beyond the Kobayashi-Maskawa mechanism. Here we demonstrate this for ttBAR production in e+e- annihilation. We propose various CP-odd correlations involving the momenta of the charged leptons and/or b (bBAR) jets which originate from t (tBAR) decay. Possible CP-violating effects in ttBAR production and decay are taken into account in a model-independent way using form factors. In particular we show that there are several correlations which allow us to disentangle possible effects in ttBAR production from those in t and tBAR decay. From a calculation of these correlations and their fluctuations we estimate the statistical sensitivities with which several CP-violating form factors will be measurable for a given number of ttBAR events.

引用

页码：53 / 80

页数：28

共 42 条

[1] LOWER LIMIT ON THE TOP-QUARK MASS FROM EVENTS WITH 2 LEPTONS IN PPBAR COLLISIONS AT SQUARE-ROOT=1.8 TEV [J].

ABE, F ;

AMIDEI, D ;

APOLLINARI, G ;

ATAC, M ;

AUCHINCLOSS, P ;

BADEN, AR ;

BACCHETTA, N ;

BAILEY, MW ;

BAMBERGER, A ;

BARNETT, BA ;

BARBAROGALTIERI, A ;

BARNES, VE ;

BAUMANN, T ;

BEDESCHI, F ;

BEHRENDS, S ;

BELFORTE, S ;

BELLETTINI, G ;

BELLINGER, J ;

BENJAMIN, D ;

BENSINGER, J ;

BERETVAS, A ;

BERGE, JP ;

BERTOLUCCI, S ;

BHADRA, S ;

BINKLEY, M ;

BLAIR, R ;

BLOCKER, C ;

BOLOGNESI, V ;

BOOTH, AW ;

BOSWELL, C ;

BRANDENBURG, G ;

BROWN, D ;

BUCKLEYGEER, E ;

BUDD, HS ;

BUSETTO, G ;

BYONWAGNER, A ;

BYRUM, KL ;

CAMPAGNARI, C ;

CAMPBELL, M ;

CANER, A ;

CAREY, R ;

CARITHERS, W ;

CARLSMITH, D ;

CARROLL, JT ;

CASHMORE, R ;

CASTRO, A ;

CERVELLI, F ;

CHADWICK, K ;

CHIARELLI, G ;

CHINOWSKY, W .

PHYSICAL REVIEW LETTERS, 1992, 68 (04) :447-451

[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] ANALYSIS FOR MAGNETIC-MOMENT AND ELECTRIC-DIPOLE MOMENT FORM-FACTORS OF THE TOP QUARK VIA E+E-]TTBAR [J].

ATWOOD, D ;

SONI, A .

PHYSICAL REVIEW D, 1992, 45 (07) :2405-2413

[4] E+E- ANNIHILATION INTO HEAVY FERMION PAIRS AT HIGH-ENERGY COLLIDERS [J].

BEENAKKER, W ;

VANDERMARCK, SC ;

HOLLIK, W .

NUCLEAR PHYSICS B, 1991, 365 (01) :24-78

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

BERNREUTHER, W ;

NACHTMANN, O .

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

[6] 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

[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] HOW TO TEST CP, T, AND CPT INVARIANCE IN THE 3 PHOTON DECAY OF POLARIZED S-3(1) POSITRONIUM [J].

BERNREUTHER, W ;

LOW, U ;

MA, JP ;

NACHTMANN, O .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1988, 41 (01) :143-158

[9] CP-VIOLATING DIPOLE FORM-FACTORS IN E+E--](T)BAR-T [J].

BERNREUTHER, W ;

SCHRODER, T ;

PHAM, TN .

PHYSICS LETTERS B, 1992, 279 (3-4) :389-396

[10]

BERNREUTHER W, 1989, Z PHYS C, V43, P43

← 1 2 3 4 5 →