Can the Aleph four-jet excess be explained in a supersymmetric model with R-parity violation?

被引:7
作者
Ghosh, DK
Godbole, RM
Raychaudhuri, S
机构
[1] INDIAN INST SCI,CTR THEORET STUDIES,BANGALORE 560012,KARNATAKA,INDIA
[2] TATA INST FUNDAMENTAL RES,THEORET PHYS GRP,MUMBAI 400005,INDIA
来源
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1997年 / 75卷 / 02期
关键词
D O I
10.1007/s002880050479
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
We investigate the possibility that the excess of four-jet events in e(+)e(-) collisions at LEP-1.5 which has been reported by the ALEPH Collaboration could be due to the production of charginos or neutralinos. followed by their decay into quark jets through baryon number-violating (lambda'') couplings. An estimate at the parton level shows, however, that these events cannot be due to neutralinos because of the low cross-section, and is unlikely to be due to the production of chargino pairs because of the largely different event shapes.
引用
收藏
页码:357 / 365
页数:9
相关论文
共 63 条
  • [21] SOME NEW ASPECTS OF SUPERSYMMETRY R-PARITY VIOLATING INTERACTIONS
    BARGER, V
    GIUDICE, GF
    HAN, T
    [J]. PHYSICAL REVIEW D, 1989, 40 (09): : 2987 - 2996
  • [22] POSSIBLE PRE-LEP200 SUSY THRESHOLD SIGNALS
    BARGER, V
    KEUNG, WY
    PHILLIPS, RJN
    [J]. PHYSICS LETTERS B, 1995, 356 (04) : 546 - 552
  • [23] PRODUCTION OF GAUGE-FERMIONS AT COLLIDERS
    BARGER, V
    ROBINETT, RW
    KEUNG, WY
    PHILLIPS, RJN
    [J]. PHYSICS LETTERS B, 1983, 131 (4-6) : 372 - 376
  • [24] BARGER V, 1994, NUCL PHYS B, V428, P31
  • [25] PRODUCTION AND DECAY OF NEUTRALINOS IN E+E- ANNIHILATION
    BARTL, A
    FRAAS, H
    MAJEROTTO, W
    [J]. NUCLEAR PHYSICS B, 1986, 278 (01) : 1 - 25
  • [26] SIGNATURES OF CHARGINO PRODUCTION IN E+E- COLLISIONS
    BARTL, A
    FRAAS, H
    MAJEROTTO, W
    [J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1986, 30 (03): : 441 - 449
  • [27] NEW LEP BOUNDS ON B-VIOLATING SCALAR COUPLINGS - R-PARITY VIOLATING SUPERSYMMETRY OR DIQUARKS
    BHATTACHARYYA, G
    CHOUDHURY, D
    SRIDHAR, K
    [J]. PHYSICS LETTERS B, 1995, 355 (1-2) : 193 - 198
  • [28] NEW LEP CONSTRAINTS ON SOME SUPERSYMMETRIC YUKAWA INTERACTIONS THAT VIOLATE R-PARITY
    BHATTACHARYYA, G
    ELLIS, J
    SRIDHAR, K
    [J]. MODERN PHYSICS LETTERS A, 1995, 10 (22) : 1583 - 1591
  • [29] D-DECAYS AND TAU-DECAYS - PLACING NEW BOUNDS ON R-PARITY-VIOLATING SUPERSYMMETRIC COUPLINGS
    BHATTACHARYYA, G
    CHOUDHURY, D
    [J]. MODERN PHYSICS LETTERS A, 1995, 10 (23) : 1699 - 1703
  • [30] SEARCH FOR SUPERSYMMETRIC PARTICLES WITH R-PARITY VIOLATION IN Z-DECAYS
    BUSKULIC, D
    CASPER, D
    DEBONIS, I
    DECAMP, D
    GHEZ, P
    GOY, C
    LEES, JP
    MINARD, MN
    ODIER, P
    PIETRZYK, B
    ARIZTIZABAL, F
    CHMEISSANI, M
    CRESPO, JM
    EFTHYMIOPOULOS, I
    FERNANDEZ, E
    FERNANDEZBOSMAN, M
    GAITAN, V
    GARRIDO, LI
    MARTINEZ, M
    ORTEU, S
    PACHECO, A
    PADILLA, C
    PALLA, F
    PASCUAL, A
    PERLAS, JA
    SANCHEZ, F
    TEUBERT, F
    CREANZA, D
    DEPALMA, M
    FARILLA, A
    IASELLI, G
    MAGGI, G
    MARINELLI, N
    NATALI, S
    NUZZO, S
    RANIERI, A
    RASO, G
    ROMANO, F
    RUGGIERI, F
    SELVAGGI, G
    SILVESTRIS, L
    TEMPESTA, P
    ZITO, G
    HUANG, X
    LIN, J
    OUYANG, Q
    WANG, T
    XIE, Y
    XU, R
    XUE, S
    [J]. PHYSICS LETTERS B, 1995, 349 (1-2) : 238 - 252