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Title: Graviton production by two photon and electron-photon processes in Kaluza-Klein theories with large extra dimensions

Abstract

We consider the production of gravitons via two photon and electron-photon fusion in Kaluza-Klein theories which allow TeV scale gravitational interactions. We show that at electron-positron colliders, the processes l{sup +}l{sup -}{yields}l{sup +}l{sup -}+graviton, with l=e, {mu}, can lead to a new signal of low energy gravity of the form l{sup +}l{sup -}{yields}l{sup +}l{sup -}+missing energy which is well above the standard model background. For example, with two extra dimensions, at the Next Linear Collider with a center of mass energy of 500 or 1000 GeV, hundreds to thousands such l{sup +}l{sup -}+graviton events may be produced if the scale of the gravitational interactions, M{sub D}, is around a few TeV. At a gamma-electron collider, more stringent bounds may be placed on M{sub D} via the related reaction e{sup -}{gamma}{yields}e{sup -}G. For instance, if a 1 TeV e{sup +}e{sup -} collider is converted to an electron-photon collider, a bound of {approx}10(14) TeV may be placed on the scale M{sub D} if the number of extra dimensions {delta}=2, while a bound of {approx}4(5) TeV may be placed if {delta}=4, with unpolarized (right polarized) electron beams. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [3]
  1. Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
  2. Department of Physics, University of California, Riverside, California 92521 (United States)
  3. Theory Group, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Publication Date:
OSTI Identifier:
20216481
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 11; Other Information: PBD: 1 Jun 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; KALUZA-KLEIN THEORY; GRAVITONS; PHOTON-ELECTRON INTERACTIONS; LEPTON-LEPTON INTERACTIONS; THEORETICAL DATA; MANY-DIMENSIONAL CALCULATIONS; PARTICLE PRODUCTION

Citation Formats

Atwood, David, Bar-Shalom, Shaouly, and Soni, Amarjit. Graviton production by two photon and electron-photon processes in Kaluza-Klein theories with large extra dimensions. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.116011.
Atwood, David, Bar-Shalom, Shaouly, & Soni, Amarjit. Graviton production by two photon and electron-photon processes in Kaluza-Klein theories with large extra dimensions. United States. doi:10.1103/PhysRevD.61.116011.
Atwood, David, Bar-Shalom, Shaouly, and Soni, Amarjit. Thu . "Graviton production by two photon and electron-photon processes in Kaluza-Klein theories with large extra dimensions". United States. doi:10.1103/PhysRevD.61.116011.
@article{osti_20216481,
title = {Graviton production by two photon and electron-photon processes in Kaluza-Klein theories with large extra dimensions},
author = {Atwood, David and Bar-Shalom, Shaouly and Soni, Amarjit},
abstractNote = {We consider the production of gravitons via two photon and electron-photon fusion in Kaluza-Klein theories which allow TeV scale gravitational interactions. We show that at electron-positron colliders, the processes l{sup +}l{sup -}{yields}l{sup +}l{sup -}+graviton, with l=e, {mu}, can lead to a new signal of low energy gravity of the form l{sup +}l{sup -}{yields}l{sup +}l{sup -}+missing energy which is well above the standard model background. For example, with two extra dimensions, at the Next Linear Collider with a center of mass energy of 500 or 1000 GeV, hundreds to thousands such l{sup +}l{sup -}+graviton events may be produced if the scale of the gravitational interactions, M{sub D}, is around a few TeV. At a gamma-electron collider, more stringent bounds may be placed on M{sub D} via the related reaction e{sup -}{gamma}{yields}e{sup -}G. For instance, if a 1 TeV e{sup +}e{sup -} collider is converted to an electron-photon collider, a bound of {approx}10(14) TeV may be placed on the scale M{sub D} if the number of extra dimensions {delta}=2, while a bound of {approx}4(5) TeV may be placed if {delta}=4, with unpolarized (right polarized) electron beams. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.116011},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 11,
volume = 61,
place = {United States},
year = {2000},
month = {6}
}