Light-gluino scenario

Barger, V.; Jacobs, Steve; Woodside, Jeffrey; Hagiwara, Kaoru

doi:10.1103/physrevd.33.57

Cited by 24 publications

(11 citation statements)

References 33 publications

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“…For the most part, we agree with the analysis of Barger et al 18 where by "hard," we mean that the transverse momentum of the radiated gluon satisfies PT > 10 GeV. We have computed the distribution of light gluinos inside the proton and have compared processes given by Eqs.…”

Section: The Distribution Of Gluinos Inside a Protonsupporting

confidence: 71%

“…18 in a recent paper. First, they remark that since gluinos in the proton have resulted from g -gg, the process given by Eq.…”

Section: The Distribution Of Gluinos Inside a Protonmentioning

confidence: 99%

“…Two related issues are discussed-the importance of hard gluon bremsstrahlung and the intrinsic gluino content of the proton. Both these issues are particularly relevant if the gluino is "light" (e.g., Mg :,;;;; [10][11][12][13][14][15][16][17][18][19][20] GeV). The Monte Carlo procedure is discussed in detail in Section 4.…”

mentioning

confidence: 99%

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Supersymmetry — lost or found?

1986

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LBL-20102 August 1985We present a comprehensive analysis of missing transverse-energy events at the CERN pp collider which would arise from a supersymmetric theory. This analysis takes into account, the new 1984 UA1 cuts, triggers and resolutions. Our conclusions from the newly reported 1984 data are that any excess number of monojet events is highly unlikely to come from gluino or scalar quark production. The new data lead to the very restrictive limits: M(g) and M(q) > 60-70 GeV. The two intriguing dijet events with Eimissing) > 55 GeV are not inconsistent with an 80 GeV gluino or scalar quark source. The above conclusions have been obtained assuming that photinos are lighter than gluinos and live long enough to escape collider detectors. An alternative picture where the Higgsino is the lightest supersymmetric particle is briefly discussed.

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Section: The Distribution Of Gluinos Inside a Protonsupporting

confidence: 71%

“…18 in a recent paper. First, they remark that since gluinos in the proton have resulted from g -gg, the process given by Eq.…”

Section: The Distribution Of Gluinos Inside a Protonmentioning

confidence: 99%

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Supersymmetry — lost or found?

1986

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“…Note however, that the weak charge Q W can receive compensating contributions from more than one new physics source, which would relax the Z ′ limits. Such cancellation effects are explicitly demonstrated in reference [256].…”

Section: Atomic Parity Violationmentioning

confidence: 78%

The phenomenology of extra neutral gauge bosons

1999

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The phenomenological constraints on extra neutral gauge bosons at present and at future colliders are reviewed. Special attention is paid to the influence of radiative corrections, systematic errors, and kinematic cuts on the Z ′ constraints. Simple estimates of the Z ′ constraints from different reactions are derived. They make the physical origin of these constraints transparent. The results existing in the literature are summarized and compared with the estimates. The consequence of model assumptions on the Z ′ constraints is discussed. The paper starts with an overview of Z ′ parameters and the possible links between them by model assumptions. It continues with a discussion of Z ′ limits and Z ′ measurements in different reactions at e + e − and µ + µ − colliders. It follows an overview of the corresponding limits at proton colliders. Possible Z ′ constraints from other reactions as ep collisions, atomic parity violation, neutrino scattering and cosmology are briefly mentioned.

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“…However, if several terms of different chiralities were simultaneously taken into account, cancellations may occur and the resulting bounds on Λ αβ would be considerably weaker, of the order of 3 − 4 TeV. As an example, the constraints originating from atomic parity violation experiments could be substantially relaxed if there were compensating contributions from different terms [6]. Consequently, a definite improvement of the situation in this regard should be obtained from a procedure of analyzing experimental data that allows to account for the various contact interaction couplings simultaneously as free parameters, and yet to obtain in a model-independent way separate bounds for the corresponding Λ's, not affected by possible accidental cancellations.…”

Section: Introductionmentioning

confidence: 99%

Optimal polarized observables for model-independent new-physics search at e+e− colliders

Бабич¹,

Osland²,

Панков³

et al. 2000

Physics Letters B

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For the processes e + e − → µ + µ − , τ + τ − , bb and cc at a future e + e − collider with √ s = 0.5TeV, we examine the sensitivity of the helicity cross sections to four-fermion contact interactions. If longitudinal polarization of the electron beam were available, two polarized integrated cross sections would offer the opportunity to separate the helicity cross sections and, in this way, to derive model-independent bounds on the relevant parameters. The measurement of these polarized cross sections with optimal kinematical cuts could significantly increase the sensitivity of helicity cross sections to contact interaction parameters and could give crucial information on the chiral structure of such new interactions.

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Light-gluino scenario

Cited by 24 publications

References 33 publications

Supersymmetry — lost or found?

Supersymmetry — lost or found?

The phenomenology of extra neutral gauge bosons

Optimal polarized observables for model-independent new-physics search at e+e− colliders

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