NLO polarized chargino pair production in electron positron annihilation
NLO polarized chargino pair production in electron positron annihilation
We calculate the complete one-loop quantum corrections to the helicity eigenstate chargino pair production cross sections in polarized electron positron collisions, within the Minimal Supersymmetric Standard Model. We calculate the non-QED corrections using the helicity amplitudes formalism, and Dimensional Regularization to deal with ultraviolet divergences. We calculate QED corrections using the dipole subtraction formalism to extract soft and collinear divergences in Bremsstrahlung, canceling them with the infrared divergences from virtual QED corrections. We show numerical results for the Focus Point scenario in mSUGRA, where we find important quantum corrections for differential cross-sections with definite chargino helicities.
beyond standard model, supersymmetric standard model, NLO computations
1-26
Díaz, Marco A.
9e5b4fe6-a14f-4297-be85-4ed6029946d7
Rivera, Maximiliano A.
a3b3d2bb-cacc-45cb-9438-a03501d788dc
Ross, Douglas A.
eb79bbfe-fb97-4bb3-813c-98f278e5a55f
April 2010
Díaz, Marco A.
9e5b4fe6-a14f-4297-be85-4ed6029946d7
Rivera, Maximiliano A.
a3b3d2bb-cacc-45cb-9438-a03501d788dc
Ross, Douglas A.
eb79bbfe-fb97-4bb3-813c-98f278e5a55f
Díaz, Marco A., Rivera, Maximiliano A. and Ross, Douglas A.
(2010)
NLO polarized chargino pair production in electron positron annihilation.
Journal of High Energy Physics, 2010 (4), .
(doi:10.1007/JHEP04(2010)098).
Abstract
We calculate the complete one-loop quantum corrections to the helicity eigenstate chargino pair production cross sections in polarized electron positron collisions, within the Minimal Supersymmetric Standard Model. We calculate the non-QED corrections using the helicity amplitudes formalism, and Dimensional Regularization to deal with ultraviolet divergences. We calculate QED corrections using the dipole subtraction formalism to extract soft and collinear divergences in Bremsstrahlung, canceling them with the infrared divergences from virtual QED corrections. We show numerical results for the Focus Point scenario in mSUGRA, where we find important quantum corrections for differential cross-sections with definite chargino helicities.
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Published date: April 2010
Keywords:
beyond standard model, supersymmetric standard model, NLO computations
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Local EPrints ID: 153459
URI: http://eprints.soton.ac.uk/id/eprint/153459
PURE UUID: 5b7b95c4-9d00-4362-b859-81edee62616a
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Date deposited: 20 May 2010 08:41
Last modified: 14 Mar 2024 01:28
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Author:
Marco A. Díaz
Author:
Maximiliano A. Rivera
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