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Title: Monojet and single photon signals from universal extra dimensions

Abstract

The usual universal extra dimensions scenario does not allow for single production of first level Kaluza-Klein (KK) excitations of matter due to the KK number conservation. However, if the matter fields are localized on a fat rane embedded in a higher dimensional space, matter-gravitation interactions violate KK number, and the production of single KK excitations becomes possible. In this paper we analyze the production of a single KK matter excitation together with a graviton in the final state, and study the potential for discovery at the Tevatron and Large Hadron Collider.

Authors:
 [1];  [2];  [2];  [3]
  1. Department of Physics, Syracuse University, Syracuse, New York 13244 (United States)
  2. Department of Physics, Oklahoma State University, Stillwater, Oklahoma, 74078 (United States)
  3. (Romania)
Publication Date:
OSTI Identifier:
20782847
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.73.076001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BASIC INTERACTIONS; CERN LHC; CONSERVATION LAWS; EXCITATION; FERMILAB TEVATRON; GRAVITATION; JET MODEL; KALUZA-KLEIN THEORY; PHOTONS; SPACE

Citation Formats

Macesanu, Cosmin, Nandi, Satyanarayan, Rujoiu, Marius, and Institute of Space Sciences, Bucharest-Magurele, 76900. Monojet and single photon signals from universal extra dimensions. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.73.076001.
Macesanu, Cosmin, Nandi, Satyanarayan, Rujoiu, Marius, & Institute of Space Sciences, Bucharest-Magurele, 76900. Monojet and single photon signals from universal extra dimensions. United States. doi:10.1103/PHYSREVD.73.076001.
Macesanu, Cosmin, Nandi, Satyanarayan, Rujoiu, Marius, and Institute of Space Sciences, Bucharest-Magurele, 76900. Sat . "Monojet and single photon signals from universal extra dimensions". United States. doi:10.1103/PHYSREVD.73.076001.
@article{osti_20782847,
title = {Monojet and single photon signals from universal extra dimensions},
author = {Macesanu, Cosmin and Nandi, Satyanarayan and Rujoiu, Marius and Institute of Space Sciences, Bucharest-Magurele, 76900},
abstractNote = {The usual universal extra dimensions scenario does not allow for single production of first level Kaluza-Klein (KK) excitations of matter due to the KK number conservation. However, if the matter fields are localized on a fat rane embedded in a higher dimensional space, matter-gravitation interactions violate KK number, and the production of single KK excitations becomes possible. In this paper we analyze the production of a single KK matter excitation together with a graviton in the final state, and study the potential for discovery at the Tevatron and Large Hadron Collider.},
doi = {10.1103/PHYSREVD.73.076001},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 73,
place = {United States},
year = {Sat Apr 01 00:00:00 EST 2006},
month = {Sat Apr 01 00:00:00 EST 2006}
}
  • Minimal universal extra dimensions (mUED) is often thought to predict that the lightest Kaluza-Klein particle (LKP) is the Kaluza-Klein gauge boson B{sup 1}, leading to conventional missing energy signals at colliders and weakly interacting massive particle (WIMP) dark matter. In fact, the implications of mUED are far richer: the B{sup 1}, charged Higgs boson H{sup {+-}}{sup 1}, and graviton G{sup 1} are all possible LKPs, leading to many different phases with distinct signatures. Considering the complete phase diagram, we find predictions for charged or neutral particles with decay lengths of microns to tens of meters; WIMP, superWIMP, or charged relicmore » particles; metastable particles with lifetimes of the order of or in excess of the age of the Universe; and scenarios combining two or more of these phenomena. In the cosmologically preferred region, the Higgs boson mass is between 180 and 245 GeV, the LKP mass is between 810 and 1400 GeV, and the maximal splitting between first Kaluza-Klein modes is less than 320 GeV. This region predicts a variety of exotic collider signals, such as slow charged particles, displaced vertices, tracks with nonvanishing impact parameters, track kinks, and even vanishing charged tracks, all of which provide early discovery possibilities at the Large Hadron Collider.« less
  • We explore the properties of dark matter in theories with two universal extra dimensions, where the lightest Kaluza-Klein state is a spin-0 neutral particle, representing a six-dimensional photon polarized along the extra dimensions. Annihilation of this 'spinless photon' proceeds predominantly through Higgs boson exchange, and is largely independent of other Kaluza-Klein particles. The measured relic abundance sets an upper limit on the spinless photon mass of 500 GeV, which decreases to almost 200 GeV if the Higgs boson is light. The phenomenology of this dark matter candidate is strikingly different from Kaluza-Klein dark matter in theories with one universal extramore » dimension. Elastic scattering of the spinless photon with quarks is helicity suppressed, making its direct detection challenging, although possible at upcoming experiments. The prospects for indirect detection with gamma rays and antimatter are similar to those of neutralinos. The rates predicted at neutrino telescopes are below the sensitivity of next-generation experiments.« less
  • No abstract prepared.