ALEPH four-jet excess, R-b and R-parity violation

被引：8

作者：

Chankowski, PH

Choudhury, D

Pokorski, S

机构：

[1] UNIV WARSAW,INST THEORET PHYS,PL-00681 WARSAW,POLAND

[2] MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST,D-80805 MUNICH,GERMANY

来源：

PHYSICS LETTERS B | 1996年 / 389卷 / 04期

关键词：

D O I：

10.1016/S0370-2693(96)01335-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We point out that the exotic 4-jet events reported by ALEPH may constitute a signal for supersymmetry with some relatively light superpartners and with explicitly broken R-parity. A parton level simulation shows that production of a pair of light charginos with their subsequent baryon-number violating decays (either through a stop or through a neutralino) could possibly give rise to this excess. The decay chi(1)(-) --> (t) over tilde(1)b --> dsb leads to signatures close to the experimental observations. The additional contributions to R-b in such a scenario are also discussed.

引用

页码：677 / 686

页数：10

共 37 条

[1] 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

[2] THE NEUTRINO AS THE SUPERSYMMETRIC PARTNER OF THE MAJORON [J].

AULAKH, CS ;

MOHAPATRA, RN .

PHYSICS LETTERS B, 1982, 119 (1-3) :136-140

[3] POSSIBLE SNEUTRINO-PAIR SIGNATURES WITH R-PARITY BREAKING [J].

BARGER, V ;

KEUNG, WY ;

PHILLIPS, RJN .

PHYSICS LETTERS B, 1995, 364 (01) :27-32

[4] NEW LEP BOUNDS ON B-VIOLATING SCALAR COUPLINGS - R-PARITY VIOLATING SUPERSYMMETRY OR DIQUARKS [J].

BHATTACHARYYA, G ;

CHOUDHURY, D ;

SRIDHAR, K .

PHYSICS LETTERS B, 1995, 355 (1-2) :193-198

[5] NEW LEP CONSTRAINTS ON SOME SUPERSYMMETRIC YUKAWA INTERACTIONS THAT VIOLATE R-PARITY [J].

BHATTACHARYYA, G ;

ELLIS, J ;

SRIDHAR, K .

MODERN PHYSICS LETTERS A, 1995, 10 (22) :1583-1591

[6] R-PARITY BREAKING AND COSMOLOGICAL CONSEQUENCES [J].

BOUQUET, A ;

SALATI, P .

NUCLEAR PHYSICS B, 1987, 284 (3-4) :557-588

[7] CONSTRAINTS ON BARYON-NONCONSERVING YUKAWA COUPLINGS IN A SUPERSYMMETRIC THEORY [J].

BRAHMACHARI, B ;

ROY, P .

PHYSICAL REVIEW D, 1994, 50 (01) :R39-R42

[8]

BUSKULIC D, PPE96052 CERN

[9]

CAMPBELL BA, 1991, PHYS LETT B, V256, P457, DOI 10.1016/0370-2693(91)91795-W

[10] NEW BOUNDS ON R-PARITY VIOLATING COUPLINGS [J].

CARLSON, CE ;

ROY, P ;

SHER, M .

PHYSICS LETTERS B, 1995, 357 (1-2) :99-104

← 1 2 3 4 →