A three-family standard-like orientifold model: Yukawa couplings and hierarchy

Mirjam Cvetič; Paul Langacker; Gary Shiu

doi:10.1016/S0550-3213(02)00684-3

A three-family standard-like orientifold model: Yukawa couplings and hierarchy

Mirjam Cvetič
, Paul Langacker
, Gary Shiu

Physics

Research output: Contribution to journal › Article › peer-review

78 Scopus citations

Abstract

We discuss the hierarchy of Yukawa couplings in a supersymmetric three family standard-like string model. The model is constructed by compactifying type IIA string theory on a Z₂ × Z₂ orientifold in which the standard model matter fields arise from intersecting D6-branes. When lifted to M-theory, the model amounts to compactification of M-theory on a G₂ manifold. While the actual fermion masses depend on the vacuum expectation values of the multiple Higgs fields in the model, we calculate the leading worldsheet instanton contributions to the Yukawa couplings and examine the implications of the Yukawa hierarchy.

Original language	English (US)
Pages (from-to)	139-156
Number of pages	18
Journal	Nuclear Physics B
Volume	642
Issue number	1-2
DOIs	https://doi.org/10.1016/S0550-3213(02)00684-3
State	Published - Oct 21 2002

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/S0550-3213(02)00684-3

Cite this

@article{deee1cc4822645468870de4ec256806e,

title = "A three-family standard-like orientifold model: Yukawa couplings and hierarchy",

abstract = "We discuss the hierarchy of Yukawa couplings in a supersymmetric three family standard-like string model. The model is constructed by compactifying type IIA string theory on a Z2 × Z2 orientifold in which the standard model matter fields arise from intersecting D6-branes. When lifted to M-theory, the model amounts to compactification of M-theory on a G2 manifold. While the actual fermion masses depend on the vacuum expectation values of the multiple Higgs fields in the model, we calculate the leading worldsheet instanton contributions to the Yukawa couplings and examine the implications of the Yukawa hierarchy.",

author = "Mirjam Cveti{\v c} and Paul Langacker and Gary Shiu",

note = "Funding Information: We are especially grateful to Angel Uranga for many discussions and collaboration at an early stage. We would also like to thank Jing Wang for useful discussions and collaborations on related work. This work was supported by the DOE grants EY-76-02-3071 and DE-FG02-95ER40896; by the National Science Foundation Grant No. PHY99-07949; by the University of Pennsylvania School of Arts and Sciences Dean's fund (M.C. and G.S.) and Class of 1965 Endowed Term Chair (M.C.); by the University of Wisconsin at Madison (P.L.); by the W.M. Keck Foundation as a Keck Distinguished Visiting Professor at the Institute for Advanced Study (P.L.). We would also like to thank ITP, Santa Barbara, during the “Brane World” workshop (M.C., P.L. and G.S.), and the Isaac Newton Institute for Mathematical Sciences, Cambridge, during the M-theory workshop (M.C.), for hospitality during the course of the work. ",

year = "2002",

month = oct,

day = "21",

doi = "10.1016/S0550-3213(02)00684-3",

language = "English (US)",

volume = "642",

pages = "139--156",

journal = "Nuclear Physics B",

issn = "0550-3213",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - A three-family standard-like orientifold model

T2 - Yukawa couplings and hierarchy

AU - Cvetič, Mirjam

AU - Langacker, Paul

AU - Shiu, Gary

N1 - Funding Information: We are especially grateful to Angel Uranga for many discussions and collaboration at an early stage. We would also like to thank Jing Wang for useful discussions and collaborations on related work. This work was supported by the DOE grants EY-76-02-3071 and DE-FG02-95ER40896; by the National Science Foundation Grant No. PHY99-07949; by the University of Pennsylvania School of Arts and Sciences Dean's fund (M.C. and G.S.) and Class of 1965 Endowed Term Chair (M.C.); by the University of Wisconsin at Madison (P.L.); by the W.M. Keck Foundation as a Keck Distinguished Visiting Professor at the Institute for Advanced Study (P.L.). We would also like to thank ITP, Santa Barbara, during the “Brane World” workshop (M.C., P.L. and G.S.), and the Isaac Newton Institute for Mathematical Sciences, Cambridge, during the M-theory workshop (M.C.), for hospitality during the course of the work.

PY - 2002/10/21

Y1 - 2002/10/21

N2 - We discuss the hierarchy of Yukawa couplings in a supersymmetric three family standard-like string model. The model is constructed by compactifying type IIA string theory on a Z2 × Z2 orientifold in which the standard model matter fields arise from intersecting D6-branes. When lifted to M-theory, the model amounts to compactification of M-theory on a G2 manifold. While the actual fermion masses depend on the vacuum expectation values of the multiple Higgs fields in the model, we calculate the leading worldsheet instanton contributions to the Yukawa couplings and examine the implications of the Yukawa hierarchy.

AB - We discuss the hierarchy of Yukawa couplings in a supersymmetric three family standard-like string model. The model is constructed by compactifying type IIA string theory on a Z2 × Z2 orientifold in which the standard model matter fields arise from intersecting D6-branes. When lifted to M-theory, the model amounts to compactification of M-theory on a G2 manifold. While the actual fermion masses depend on the vacuum expectation values of the multiple Higgs fields in the model, we calculate the leading worldsheet instanton contributions to the Yukawa couplings and examine the implications of the Yukawa hierarchy.

UR - https://www.scopus.com/pages/publications/0037152319

UR - https://www.scopus.com/pages/publications/0037152319#tab=citedBy

U2 - 10.1016/S0550-3213(02)00684-3

DO - 10.1016/S0550-3213(02)00684-3

M3 - Article

AN - SCOPUS:0037152319

SN - 0550-3213

VL - 642

SP - 139

EP - 156

JO - Nuclear Physics B

JF - Nuclear Physics B

IS - 1-2

ER -

A three-family standard-like orientifold model: Yukawa couplings and hierarchy

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this