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Supersymmetric Pati-Salam models from intersecting D- branes

Supersymmetric Pati-Salam models from intersecting D- branes
Supersymmetric Pati-Salam models from intersecting D- branes
We explore supersymmetric Type I string-motivated three-family scenarios in which the Standard Model is embedded within two sets of intersecting D-branes with U(1)-extended Pati–Salam gauge groups. We study a model inspired by the Shiu–Tye Type IIB orientifold, in which a three-family scenario is obtained by assuming that the gauge symmetry breaking takes place in two stages; the Pati–Salam group arises from diagonal breaking of the U(N) gauge groups, which is then broken to the SM gauge group. We investigate the diagonal breaking scenario in detail and find that generically there are difficulties involved in decoupling the exotic Higgs remnants. On the phenomenological side, proper low energy gauge coupling predictions effectively lead to a “single brane” scenario for MStringMU1016 GeV. The soft parameters in this limit are constrained by a well-known sum rule, leading to a distinctive phenomenological pattern for the low energy mass spectrum.
0370-2693
263-275
Everett, L.L.
4d409bb5-4593-4332-b4aa-05678253f0b4
Kane, G.L.
3629b271-2d86-445d-af04-c37936e8f74f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Rigolin, S.
bc9cb11f-1723-4335-8428-c10a2f42cc1f
Wang, L.-T.
092bb855-0edc-44f7-bede-3a2bae88a690
Everett, L.L.
4d409bb5-4593-4332-b4aa-05678253f0b4
Kane, G.L.
3629b271-2d86-445d-af04-c37936e8f74f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Rigolin, S.
bc9cb11f-1723-4335-8428-c10a2f42cc1f
Wang, L.-T.
092bb855-0edc-44f7-bede-3a2bae88a690

Everett, L.L., Kane, G.L., King, S.F., Rigolin, S. and Wang, L.-T. (2002) Supersymmetric Pati-Salam models from intersecting D- branes. Physics Letters B, 531 (3-4), 263-275. (doi:10.1016/S0370-2693(02)01491-0).

Record type: Article

Abstract

We explore supersymmetric Type I string-motivated three-family scenarios in which the Standard Model is embedded within two sets of intersecting D-branes with U(1)-extended Pati–Salam gauge groups. We study a model inspired by the Shiu–Tye Type IIB orientifold, in which a three-family scenario is obtained by assuming that the gauge symmetry breaking takes place in two stages; the Pati–Salam group arises from diagonal breaking of the U(N) gauge groups, which is then broken to the SM gauge group. We investigate the diagonal breaking scenario in detail and find that generically there are difficulties involved in decoupling the exotic Higgs remnants. On the phenomenological side, proper low energy gauge coupling predictions effectively lead to a “single brane” scenario for MStringMU1016 GeV. The soft parameters in this limit are constrained by a well-known sum rule, leading to a distinctive phenomenological pattern for the low energy mass spectrum.

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More information

Published date: 11 April 2002

Identifiers

Local EPrints ID: 57215
URI: http://eprints.soton.ac.uk/id/eprint/57215
ISSN: 0370-2693
PURE UUID: d88cb12b-94e5-4c18-a9ab-fbcfb3ab0cab

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Date deposited: 14 Aug 2008
Last modified: 13 Mar 2019 20:34

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