Bosonic decays of (t)over-tilde2 and (b)over-tilde2

被引：31

作者：

Bartl, A

Eberl, H

Hidaka, K

Kraml, S

Kon, T

Majerotto, W

Porod, W

Yamada, Y

机构：

[1] Univ Vienna, Inst Theoret Phys, A-1090 Vienna, Austria

[2] Austrian Acad Sci, Inst Hochenergiephys, A-1050 Vienna, Austria

[3] Tokyo Gakugei Univ, Dept Phys, Tokyo 1848501, Japan

[4] Seikei Univ, Fac Engn, Musashino, Tokyo 180, Japan

[5] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

PHYSICS LETTERS B | 1998年 / 435卷 / 1-2期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1016/S0370-2693(98)00787-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a detailed study of the decays of the heavier top and bottom squarks ((t) over tilde(2) and (b) over tilde(2)) in the Minimal Supersymmetric Standard Model (MSSM). We show that the decays into Higgs or gauge bosons, i.e. (t) over tilde(2) --> (t) over tilde(1) + (h(0),H-0,A(0) or Z(0)), (t) over tilde(2) --> (b) over tilde(1,2) + (H+ or W+), and the analogous (b) over tilde(2) decays, can be dominant in a wide range of the model parameters due to the large Yukawa couplings and mixings of t and b. Compared to the conventional decays into fermions, such as (t) over tilde(2) --> t + (<(chi)over tilde>(0)(i) or (g) over tilde) and (t) over tilde(2) --> b + <(chi)over tilde>(+)(j), these bosonic decay modes can have significantly different decay structures and distributions. This could have an important impact on the search for (t) over tilde(2) and (b) over tilde(2) and the determination of the MSSM parameters at future colliders. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：118 / 124

页数：7

共 26 条

[1] SEARCH FOR SQUARKS AND GLUINOS IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV [J].

ABACHI, S ;

ABBOTT, B ;

ABOLINS, M ;

ACHARYA, BS ;

ADAM, I ;

ADAMS, DL ;

ADAMS, M ;

AHN, S ;

AIHARA, H ;

ALITTI, J ;

ALVAREZ, G ;

ALVES, GA ;

AMIDI, E ;

AMOS, N ;

ANDERSON, EW ;

ARONSON, SH ;

ASTUR, R ;

AVERY, RE ;

BADEN, A ;

BALAMURALI, V ;

BALDERSTON, J ;

BALDIN, B ;

BANTLY, J ;

BARTLETT, JF ;

BAZIZI, K ;

BENDICH, J ;

BERI, SB ;

BERTRAM, I ;

BEZZUBOV, VA ;

BHAT, PC ;

BHATNAGAR, V ;

BHATTACHARJEE, M ;

BISCHOFF, A ;

BISWAS, N ;

BLAZEY, G ;

BLESSING, S ;

BOEHNLEIN, A ;

BOJKO, NI ;

BORCHERDING, F ;

BORDERS, J ;

BOSWELL, C ;

BRANDT, A ;

BROCK, R ;

BROSS, A ;

BUCHHOLZ, D ;

BURTOVOI, VS ;

BUTLER, JM ;

CASEY, D ;

CASTILLAVALDEZ, H ;

CHAKRABORTY, D .

PHYSICAL REVIEW LETTERS, 1995, 75 (04) :618-623

[2] Search for light top squarks in p(p)over-bar collisions at root s=1.8 TeV [J].

Abachi, S ;

Abbott, B ;

Abolins, M ;

Acharya, BS ;

Adam, I ;

Adams, DL ;

Adams, M ;

Ahn, S ;

Aihara, H ;

Alitti, J ;

Alvarez, G ;

Alves, GA ;

Amidi, E ;

Amos, N ;

Anderson, EW ;

Aronson, SH ;

Astur, R ;

Avery, RE ;

Baden, A ;

Balamurali, V ;

Balderston, J ;

Baldin, B ;

Bantly, J ;

Bartlett, JF ;

Bazizi, K ;

Bendich, J ;

Beri, SB ;

Bertram, I ;

Bezzubov, VA ;

Bhat, PC ;

Bhatnagar, V ;

Bhattacharjee, M ;

Bischoff, A ;

Biswas, N ;

Blazey, G ;

Blessing, S ;

Bloom, P ;

Boehnlein, A ;

Bojko, NI ;

Borcherding, F ;

Borders, J ;

Boswell, C ;

Brandt, A ;

Brock, R ;

Bross, A ;

Buchholz, D ;

Burtovoi, VS ;

Butler, JM ;

Carvalho, W ;

Casey, D .

PHYSICAL REVIEW LETTERS, 1996, 76 (13) :2222-2227

[3] 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

[4] Search for charginos, neutralinos and gravitinos at LEP [J].

Abreu P. ;

Adam W. ;

Adye T. ;

Ajinenko I. ;

Alekseev G.D. ;

Alemany R. ;

Allport P.P. ;

Almehed S. ;

Amaldi U. ;

Amato S. ;

Andersson P. ;

Andreazza A. ;

Antilogus P. ;

Apel W.-D. ;

Arnoud Y. ;

Ǻsman B. ;

Augustin J.-E. ;

Augustinus A. ;

Baillon P. ;

Bambade P. ;

Barbi M. ;

Bardin D.Y. ;

Barker G. ;

Baroncelli A. ;

Barring O. ;

Bates M.J. ;

Battaglia M. ;

Baubillier M. ;

Baudot J. ;

Becks K.-H. ;

Begalli M. ;

Beilliere P. ;

Belokopytov Y. ;

Belous K. ;

Benvenuti A.C. ;

Berat C. ;

Berggren M. ;

Bertini D. ;

Bertrand D. ;

Besancon M. ;

Bianchi F. ;

Bigi M. ;

Bilenky M.S. ;

Billoir P. ;

Bizouard M.-A. ;

Bloch D. ;

Blume M. ;

Bonesini M. ;

Bonivento W. ;

Boonekamp M. .

The European Physical Journal C, 1998, 1 (1-2) :1-20

[5]

ACCIARRI M, IN PRESS EUR PHYS C

[6] Search for chargino and neutralino production at √s=170 and 172 GeV at LEP [J].

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Baumann, S ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Bethke, S ;

Biebel, O ;

Biguzzi, A ;

Bird, SD ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bobinski, M ;

Bock, P ;

Bonacorsi, D ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

Brigliadori, L ;

Brown, RM ;

Burckhart, HJ ;

Burgard, C ;

Burgin, R ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Chrisman, D ;

Clarke, PEL ;

Cohen, I .

EUROPEAN PHYSICAL JOURNAL C, 1998, 2 (02) :213-236

[7] Search for scalar top and scalar bottom quarks at root s=170-172 GeV in e(+)e(-) collisions [J].

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Baumann, S ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Berlich, P ;

Bethke, S ;

Biebel, O ;

Biguzzi, A ;

Bird, SD ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bobinski, M ;

Bock, P ;

Bonacorsi, D ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

Brigliadori, L ;

Brown, RM ;

Burckhart, HJ ;

Burgard, C ;

Burgin, R ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Chrisman, D ;

Clarke, PEL .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 75 (03) :409-420

[8] Pursuing interpretations of the HERA large-Q(2) data [J].

Altarelli, G ;

Ellis, J ;

Giudice, GF ;

Lola, S ;

Mangano, ML .

NUCLEAR PHYSICS B, 1997, 506 (1-2) :3-28

[9]

BAER H, HEPPH9503479

[10] Search for the neutral Higgs bosons of the MSSM in e(+)e(-) collisions at root s from 130 to 172 GeV [J].

Barate, R ;

Buskulic, D ;

Decamp, D ;

Ghez, P ;

Goy, C ;

Lees, JP ;

Lucotte, A ;

Minard, MN ;

Nief, JY ;

Pietrzyk, B ;

Casado, MP ;

Chmeissani, M ;

Comas, P ;

Crespo, JM ;

Delfino, M ;

Fernandez, E ;

FernandezBosman, M ;

Garrido, L ;

Juste, A ;

Martinez, M ;

Merino, G ;

Miquel, R ;

Mir, LM ;

Padilla, C ;

Park, IC ;

Pascual, A ;

Perlas, JA ;

Riu, I ;

Sanchez, F ;

Teubert, F ;

Colaleo, A ;

Creanza, D ;

dePalma, M ;

Gelao, G ;

Iaselli, G ;

Maggi, G ;

Maggi, M ;

Marinelli, N ;

Nuzzo, S ;

Ranieri, A ;

Raso, G ;

Ruggieri, F ;

Selvaggi, G ;

Silvestris, L ;

Tempesta, P ;

Tricomi, A ;

Zito, G ;

Huang, X ;

Lin, J ;

Ouyang, Q .

PHYSICS LETTERS B, 1997, 412 (1-2) :173-188

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