Decays of the lightest top squark

被引：109

作者：

Boehm, C ^{[1
]}

Djouadi, A ^{[1
]}

Mambrini, Y ^{[1
]}

机构：

[1] Univ Montpellier 2, Lab Phys Math & Theor, CNRS, UMR 5825, F-34095 Montpellier 5, France

来源：

PHYSICAL REVIEW D | 2000年 / 61卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.61.095006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze higher order decay modes of the lightest top squark (t) over tilde(1) in the minimal supersymmetric (SUSY) extension of the standard model (MSSM), where the lightest SUSY particle (LSP) is assumed to be the neutralino chi(1)(o). For small (t) over tilde(1), masses accessible at CERN LEP2 and the Fermilab Tevatron, we show that the Four-body decay mode into the LSP, a bottom quark and two massless fermions, (1) over tilde(1)-->b chi(1)(o)f (f) over bar, can dominate in a wide range of the MSSM parameter space over the loop-induced decay into a charm quark and the LSP, (t) over tilde(1)-->c chi(1)(o). This result might affect the experimental searches on this particle, since only the later signal has been considered so far.

引用

页数：10

共 54 条

[1] Search for scalar top and scalar bottom quarks at √s=189 GeV at LEP [J].

Abbiendi, G ;

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Ashby, SF ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Batley, JR ;

Baumann, S ;

Bechtluft, J ;

Behnke, T ;

Bell, KW ;

Bella, G ;

Bellerive, A ;

Bentvelsen, S ;

Bethke, S ;

Betts, S ;

Biebel, O ;

Biguzzi, A ;

Blobel, V ;

Bloodworth, IJ ;

Bock, P ;

Böhme, J ;

Bonacorsi, D ;

Boutemeur, M ;

Braibant, S ;

Bright-Thomas, P ;

Brigliadori, L ;

Brown, RM ;

Burckhart, HJ ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Chrisman, D ;

Ciocca, C ;

Clarke, PEL ;

Clay, E ;

Cohen, I ;

Conboy, JE .

PHYSICS LETTERS B, 1999, 456 (01) :95-106

[2] Search for gluinos and squarks at the Fermilab tevatron collider [J].

Abe, F ;

Akimoto, H ;

Akopian, A ;

Albrow, MG ;

Amendolia, SR ;

Amidei, D ;

Antos, J ;

Aota, S ;

Apollinari, G ;

Asakawa, T ;

Ashmanskas, W ;

Atac, M ;

Azfar, F ;

AzziBacchetta, P ;

Bacchetta, N ;

Badgett, W ;

Bagdasarov, S ;

Bailey, MW ;

Bao, J ;

deBarbaro, P ;

BarbaroGaltieri, A ;

Barnes, VE ;

Barnett, BA ;

Barone, M ;

Barzi, E ;

Bauer, G ;

Baumann, T ;

Bedeschi, F ;

Behrends, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Benjamin, D ;

Benlloch, J ;

Bensinger, J ;

Benton, D ;

Beretvas, A ;

Berge, JP ;

Berryhill, J ;

Bertolucci, S ;

Bevensee, B ;

Bhatti, A ;

Biery, K ;

Binkley, M ;

Bisello, D ;

Blair, RE ;

Blocker, C ;

Bodek, A ;

Bokhari, W ;

Bolignesi, V .

PHYSICAL REVIEW D, 1997, 56 (03) :R1357-R1362

[3] Physics with e+e- linear colliders [J].

Accomando, E ;

Andreazza, A ;

Anlauf, H ;

Ballestrero, A ;

Barklow, T ;

Bartels, J ;

Bartl, A ;

Battaglia, M ;

Beenakker, W ;

Belanger, G ;

Bernreuther, W ;

Biebel, J ;

Binnewies, J ;

Blumlein, J ;

Boos, E ;

Borzumati, F ;

Boudjema, F ;

Brandenburg, A ;

Bussey, PJ ;

Cacciari, M ;

Casalbuoni, R ;

Corsetti, A ;

De Curtis, S ;

Cuypers, F ;

Daskalakis, G ;

Deandrea, A ;

Denner, A ;

Diehl, M ;

Dittmaier, S ;

Djouadi, A ;

Dominici, D ;

Dreiner, H ;

Eberl, H ;

Ellwanger, U ;

Engel, R ;

Flottmann, K ;

Franz, H ;

Gajdosik, T ;

Gatto, R ;

Genten, H ;

Godbole, R ;

Gounaris, G ;

Greco, M ;

Grivaz, JF ;

Guetta, D ;

Haidt, D ;

Harlander, R ;

He, HJ ;

Hollik, W ;

Huitu, K .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1998, 299 (01) :1-78

[4] SEARCHING FOR A SCALAR TOP AT THE CERN PPBAR COLLIDER [J].

ALTARELLI, G ;

RUCKL, R .

PHYSICS LETTERS B, 1984, 144 (1-2) :126-132

[5]

ALTARELLI G, HEPPH9611239

[6]

[Anonymous], HEPPH9903257

[7]

[Anonymous], HEPPH9901246

[8] QCD CORRECTIONS TO SCALAR QUARK PAIR PRODUCTION IN E(+)E(-) ANNIHILATION [J].

ARHRIB, A ;

CAPDEQUIPEYRANERE, M ;

DJOUADI, A .

PHYSICAL REVIEW D, 1995, 52 (03) :1404-1417

[9]

ARNOWITT R, CTPTAMU5293

[10] COMPONENT FORMULAS FOR HADROPRODUCTION OF LEFT-HANDED AND RIGHT-HANDED SQUARKS [J].

BAER, H ;

TATA, X .

PHYSICS LETTERS B, 1985, 160 (1-3) :159-162

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