Supersymmetric interpretation of high-Q2 DESY HERA events and other related issues

被引:12
作者
Kim, JE [1 ]
Ko, P
机构
[1] Harvard Univ, Lyman Lab Phys, Cambridge, MA 02138 USA
[2] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea
[3] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea
来源
PHYSICAL REVIEW D | 1998年 / 57卷 / 01期
关键词
D O I
10.1103/PhysRevD.57.489
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the framework of the minimal supersymmetric standard model with R-parity violation, the high-Q(2) DESY HERA events can be interpreted as the s-channel production of a single top-squark of M-(t over tilde 1) approximate to 200 GeV, whose dominant decay modes are assumed to be the R-parity violating e(+) + d and the R-parity conserving chi(+) + b. Assuming only one coupling <(lambda(131)')over bar> is nonzero of order similar to 0.04-0.12, we find that (i) the high-Q(2) HERA events can be understood as an s-channel top squark production with st subsequent decay into e(+) + (single jet), and (ii) the ALEPH 4-jet events can be understood in the scenario suggested by Carena et al. We briefly discuss other physics signals of this scenario at other places such as HERA, CERN LEP200, and Fermilab Tevatron. The best test for our scenario is to observe the top squark decay into chi(+) + b followed by chi(+) --> (e) over tilde(+) + nu(e) and (e) over tilde(+) --> q + (q) over bar' via the R-parity violating coupling. [S0556-2821(98)02701-5].
引用
收藏
页码:489 / 495
页数:7
相关论文
共 50 条
  • [1] ABBOTT B, HEPEX9707033
  • [2] Production of fermion-pair events in e(+)e(-) collisions at 161 GeV centre-of-mass energy
    Ackerstaff, K
    Alexander, G
    Allison, J
    Altekamp, N
    Ametewee, K
    Anderson, KJ
    Anderson, S
    Arcelli, S
    Asai, S
    Axen, D
    Azuelos, G
    Ball, AH
    Barberio, E
    Barlow, RJ
    Bartoldus, R
    Batley, JR
    Bechtluft, J
    Beeston, C
    Behnke, T
    Bell, AN
    Bell, KW
    Bella, G
    Bentvelsen, S
    Berlich, P
    Bethke, S
    Biebel, O
    Blobel, V
    Bloodworth, IJ
    Bloomer, JE
    Bobinski, M
    Bock, P
    Bosch, HM
    Boutemeur, M
    Bouwens, BT
    Braibant, S
    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
    Conboy, JE
    Cooke, OC
    [J]. PHYSICS LETTERS B, 1997, 391 (1-2) : 221 - 234
  • [3] ADLER SL, HEPPH9702378
  • [4] Observation of events at very high Q(2) in ep collisions at HERA
    Adloff, C
    Aid, S
    Anderson, M
    Andreev, V
    Andrieu, B
    Arkadov, V
    Arndt, C
    Ayyaz, I
    Babaev, A
    Bahr, J
    Ban, J
    Ban, Y
    Baranov, P
    Barrelet, E
    Barschke, R
    Bartel, W
    Bassler, U
    Beck, HP
    Beck, M
    Behrend, HJ
    Belousov, A
    Berger, C
    Bernardi, G
    BertrandCoremans, G
    Beyer, R
    Biddulph, P
    Bispham, P
    Bizot, JC
    Borras, K
    Botterweck, F
    Boudry, V
    Bourov, S
    Braemer, A
    Braunschweig, W
    Brisson, V
    Bruckner, W
    Bruel, P
    Bruncko, D
    Brune, C
    Buchholz, R
    Bungener, L
    Burger, J
    Busser, FW
    Buniatian, A
    Burke, S
    Buschhorn, G
    Calvet, D
    Campbell, AJ
    Carli, T
    Charlet, M
    [J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 74 (02): : 191 - 205
  • [5] R-parity violation in flavor-changing neutral current processes and top quark decays
    Agashe, K
    Graesser, M
    [J]. PHYSICAL REVIEW D, 1996, 54 (07) : 4445 - 4452
  • [6] Test of the four-fermion contact interaction in e(+)e(-) collisions at 130-140 GeV
    Alexander, G
    Allison, J
    Altekamp, N
    Ametewee, K
    Anderson, KJ
    Anderson, S
    Arcelli, S
    Asai, S
    Axen, D
    Azuelos, G
    Ball, AH
    Barberio, E
    Barlow, RJ
    Bartoldus, R
    Batley, JR
    Bechtluft, J
    Beeston, C
    Behnke, T
    Bell, AN
    Bell, KW
    Bella, G
    Bentvelsen, S
    Berlich, P
    Bethke, S
    Biebel, O
    Blobel, V
    Bloodworth, IJ
    Bloomer, JE
    Bobinski, M
    Bock, P
    Bosch, HM
    Boutemeur, M
    Bouwens, BT
    Braibant, S
    Brown, RM
    Burckhart, HJ
    Burgard, C
    Burgin, R
    Capiluppi, P
    Carnegie, RK
    Carter, AA
    Carter, JR
    Chang, CY
    Charlesworth, C
    Charlton, DG
    Chrisman, D
    Chu, SL
    Clarke, PEL
    Cohen, I
    Conboy, JE
    [J]. PHYSICS LETTERS B, 1996, 387 (02) : 432 - 442
  • [7] ALTARELLI G, CERNTH9740
  • [8] BABU KS, 1997, PHYS LETT B, V402, P307
  • [9] Contact interactions and high-Q(2) events in e(+)p collisions at HERA
    Barger, V
    Cheung, KM
    Hagiwara, K
    Zeppenfeld, D
    [J]. PHYSICS LETTERS B, 1997, 404 (1-2) : 147 - 152
  • [10] SOME NEW ASPECTS OF SUPERSYMMETRY R-PARITY VIOLATING INTERACTIONS
    BARGER, V
    GIUDICE, GF
    HAN, T
    [J]. PHYSICAL REVIEW D, 1989, 40 (09): : 2987 - 2996