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Distinguishing flavor nonuniversal colorons from Z′ bosons at the LHC

Autor: Chivukula, RS, Ittisamai, P, Simmons, EH

Publikováno v: Physical Review D, vol 91, iss 5
Physical Review D-Particles, Fields, Gravitation and Cosmology, vol 91, iss 5

Electrically neutral massive color-singlet and color-octet vector bosons, which are often predicted in theories beyond the Standard Model, have the potential to be discovered as dijet resonances at the LHC. A color-singlet resonance that has leptopho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b5d5208c9dc7fa1600415e28d36df4ce
https://escholarship.org/uc/item/9zp3z06p

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Topcolor in the LHC Era

Autor: Simmons, EH, Chivukula, RS, Coleppa, B, Logan, HE, Martin, A

Ongoing LHC searches for the standard model Higgs Boson in WW or ZZ decay modes strongly constrain the top-Higgs state predicted in many models with new dynamics that preferentially affects top quarks. Such a state couples strongly to top-quarks, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::9fc753e62312182b9b622e3bdbdff5b3
https://escholarship.org/uc/item/6tj5w28t

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Four-site Higgsless model with wave function mixing

Autor: Chivukula, RS, Simmons, EH

Publikováno v: Physical Review D, vol 78, iss 7
Physical Review D-Particles, Fields, Gravitation and Cosmology, vol 78, iss 7

Motivated by models of holographic technicolor, we discuss a four-site deconstructed Higgsless model with nontrivial wave function mixing. We compute the spectrum of the model, the electroweak triple gauge-boson vertices, and, for brane-localized fer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2735e7e41b157dccf8fd6dacfd10561f
https://escholarship.org/uc/item/88c0b3wp

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Electroweak limits on nonuniversal Z(') bosons

Autor: Chivukula, RS, Simmons, EH

Publikováno v: PHYSICAL REVIEW D, vol 66, iss 1
Physical Review D, vol 66, iss 1

Many types of physics beyond the standard model include an extended electroweak gauge group. If these extensions are associated with flavor symmetry breaking, the gauge interactions will not be flavor-universal. In this note we update the bounds plac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::cf605d9efec70302c9ca721e2b45700f
https://escholarship.org/uc/item/7sr1n297

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Top Theories

Autor: Simmons, EH

As the most recently discovered and heaviest quark, the top presents us with theoretical challenges. How are we to understand its properties within the larger effort to explain the origins of electroweak and flavor symmetry breaking ? This talk discu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::ce808e55be6562d84e3962fa7937682f
https://escholarship.org/uc/item/11k7q2g3

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Z-->bb-bar in U(1)R symmetric supersymmetry

Autor: Simmons, EH, Su, Y

Publikováno v: Physical review. D, Particles and fields, vol 54, iss 5

We compute the one-loop corrections to the $Z \to b\bar{b}$ vertex in the $U(1)_R$ symmetric minimal supersymmetric extension of the standard model. We find that the predicted value of $R_b$ is consistent with experiment if the mass of the lighter to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::63a1ee42fa1db632b9dab51f6ae50eb3
https://escholarship.org/uc/item/6gd242qw

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Searching for G3 in tt-bar production

Autor: Cho, P, Simmons, EH

Publikováno v: Physical review. D, Particles and fields, vol 51, iss 5

The triple gluon field strength operator $G^3$ represents the only genuinely gluonic CP conserving term which can appear at dimension-6 within an effective strong interaction Lagrangian. Previous studies of this operator have revealed that its effect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::7b57307ae45e90cc400065812f36d411
https://escholarship.org/uc/item/80m524g8

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A heavy top quark and the Zbb vertex in non-commuting extended technicolor

Autor: Chivukula, RS, Simmons, EH, Terning, J

Publikováno v: Physics Letters B, vol 331, iss 3-4

We explore corrections to electroweak parameters in the context of Extended Technicolor (ETC) models in which the ETC gauge-boson which generates the top-quark mass carries weak SU(2) charge. For mt≈150 GeV there exist potentially large corrections

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3f2ddea211b88f12330a486867591008
https://escholarship.org/uc/item/0qv9852x

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Walking technicolor and the Zbb vertex

Autor: Chivukula, RS, Gates, E, Simmons, EH, Terning, J

Publikováno v: Physics Letters B, vol 311, iss 1-4

A slowly running technicolor coupling will affect the size of non-oblique corrections to the Zbb vertex from extended technicolor dynamics. We show that, while "walking technicolor" reduces the magnitude of the corrections, they generally remain larg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6ec3194c030d968009045ebadcd4ec8a
https://escholarship.org/uc/item/4sp6h94b

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Nonoblique effects in the Zbb-bar vertex from extended technicolor dynamics

Autor: Chivukula, RS, Selipsky, SB, Simmons, EH

Publikováno v: Physical review letters, vol 69, iss 4

Extended technicolor theories generate potentially large corrections to the Zbb» vertex which can be observed in current experiments at the CERN e+e- collider LEP. © 1992 The American Physical Society.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______325::804006850d446b081a73a18720995a5c
https://escholarship.org/uc/item/8sw33186

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