16891404
Drell-Yan and diphoton production at hadron colliders and low scale gravity model
In the model of Arkani-Hamed, Dimopoulos, and Dvali where gravity is allowed to propagate in the extra dimensions of very large size, virtual graviton exchange between the standard model particles can give rise to signatures that can be tested in collider experiments. We study these effects in dilepton and diphoton production at hadron colliders. Specifically, we examine the double differential cross section in the invariant mass and scattering angle, which is found to be useful in separating the gravity effects from the standard model. In this work, sensitivity obtained using the double differential cross section is higher than that in previous studies based on single differential distributions. Assuming no excess of events over the standard model predictions, we obtain the following 95% confidence level lower limits on the effective Planck scale: 0.9\char21{}1.5 TeV in the Fermilab Tevatron run I, 1.3\char21{}2.5 TeV in run IIa, 1.7\char21{}3.5 TeV in run IIb, and 6.5\char21{}12.8 TeV at the CERN LHC. The range of numbers corresponds to the number of extra dimensions $n=7\ensuremath{-}2.$
199680514
Minireview on extra dimensions
119007583
Interplay and Characterization of Dark Matter Searches at Colliders and in Direct Detection Experiments
In this White Paper we present and discuss a concrete proposal for the consistent interpretation of Dark Matter searches at colliders and in direct detection experiments. Based on a specific implementation of simplified models of vector and axial-vector mediator exchanges, this proposal demonstrates how the two search strategies can be compared on an equal footing.
55912405
Kaluza-Klein states of the standard model gauge bosons: Constraints from high energy experiments
In theories with the standard model gauge bosons propagating in TeV 21 -size extra dimensions, their KaluzaKlein states interact with the rest of the SM particles confined to the 3-brane. We look for possible signals for this interaction in the present high-energy collider data, and estimate the sensitivity offered by the next generation of collider experiments. Based on the present data from the CERN LEP 2, Fermilab Tevatron, and DESY HERA experiments, we set a lower limit on the extra dimension compactification scale MC .6.8 TeV at the 95% confidence level~dominated by the LEP 2 results! and quote expected sensitivities in the Tevatron Run 2 and at the CERN LHC.
11502002
Discovering a light Higgs boson with light
We evaluate the prospects for detecting a non-standard light Higgs boson with a significant branching ratio to two photons, in run II of the Fermilab Tevatron. We derive the reach for several channels: 2{gamma} inclusive, 2{gamma}+1 jet, and 2{gamma}+2 jets. We present the expected run II limits on the branching ratio of h{yields}{gamma}{gamma} as a function of the Higgs boson mass, for the case of ''bosonic,'' as well as ''top-color'' Higgs bosons. (c) 2000 The American Physical Society.
119417371
Black holes at future colliders and beyond
One of the most dramatic consequences of low-scale (~1 TeV) quantum gravity in models with large or warped extra dimension(s) is copious production of mini-black holes at future colliders and in ultra-high-energy cosmic ray collisions. Hawking radiation of these black holes is expected to be constrained mainly to our three-dimensional world and results in rich phenomenology. In this topical review we discuss the current status of astrophysical observations of black holes and selected aspects of mini-black-hole phenomenology, such as production at colliders and in cosmic rays, and black-hole decay properties, Hawking radiation as a sensitive probe of the dimensionality of extra space, as well as an exciting possibility of finding new physics in the decays of black holes.
118623789
On some rare weak decays of hyperons in E781
118051879
Radiative decays of hyperons
115236552
Searches for exotic pentaquark baryons with hidden strangeness in experiments at the SPHINX facility
122685247
Search for exotic baryons with the SPHINX facility
118922675
Study of diffractive production processes in proton-nucleon and proton-nucleus interactions and search for exotic baryons