Supersymmetric interpretation of high-Q{sup 2} DESY HERA events and other related issues

Journal Article · Thu Jan 01 04:00:00 UTC 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.57.489· OSTI ID:566144

Kim, J E ^[1]; Ko, P ^[2]

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1. Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
2. Department of Physics, KAIST, Taejon 305-701 (Korea)

In the framework of the minimal supersymmetric standard model with R-parity violation, the high-Q{sup 2} DESY HERA events can be interpreted as the s-channel production of a single top-squark of M{sub {tilde t}{sub 1}}{approx}200 GeV, whose dominant decay modes are assumed to be the R-parity violating e{sup +}+d and the R-parity conserving {chi}{sup +}+b. Assuming only one coupling {ovr {lambda}{sup {prime}}{sub 131}} is nonzero of order {approximately}0.04{minus}0.12, we find that (i) the high-Q{sup 2} HERA events can be understood as an s-channel top squark production with a subsequent decay into e{sup +}+(singlejet), and (ii) the ALEPH 4-jet events can be understood in the scenario suggested by Carena {ital 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}{sup +}+b followed by {chi}{sup +}{r_arrow}{tilde e}{sup +}+{nu}{sub e} and {tilde e}{sup +}{r_arrow}q+{bar q}{prime} via the R-parity violating coupling. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 566144
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 57; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON-PROTON INTERACTIONS
FERMILAB TEVATRON
MOMENTUM TRANSFER
PARITY
PARTICLE PRODUCTION
S CHANNEL
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY
T QUARKS
UNIFIED GAUGE MODELS
VIOLATIONS