Hadronic resonances with exotic electric charge

Conto, G. De; Pleitez, V.

doi:10.1103/physrevd.96.075028

Cited by 8 publications

(8 citation statements)

References 24 publications

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“…On the other hand, it has been observed that in the m331 and the 331HL models (both with β = − √ 3 and X = 0) there is one quark with electric charge 5/3 and two with −4/3 (in units of |e|). Hence it is possible the existence of a replica of the flavor SU (3) F symmetry of the light quarks u, d, s but now with the heavy quarks J, j 1 , j 2 which would imply the existence of hadrons with exotic quarks [93]. It means that SU (3) F → SU (3) H making u, d, s → J, j 1 , j 2 .…”

Section: B Do Exotic Bound States Exist?mentioning

confidence: 99%

Challenges for the 3-3-1 models

Pleitez¹

2021

Preprint

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The so-called 3-3-1 models have been widely studied in the literature. However, in almost all cases, as with other models, just simplified versions have been consider. On the other hand, the LHC has not neither confirmed nor rejected any model. In this paper we consider some aspects of the 3-3-1 models that must be investigated, or be re-analyzed, firstly theoretically and, eventually, experimentally. Some of these issues are independent of the representation content of the particular model, that is, they are independent of the value of the β parameter. However, others strongly depend on the particular model considered.

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Section: B Do Exotic Bound States Exist?mentioning

confidence: 99%

Challenges for the 3-3-1 models

Pleitez¹

2021

Preprint

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“…The CMDM of the top quark has already been studied in the context of an early version of the 331 model [9], and more recently the contributions to the electron and muon anomalous MDM were studied in the RM331 [40] and another 331 realization [41]. In this work we present a study on the contributions of the RM331 to the top quark CMDM and CEDM.…”

Section: Introductionmentioning

confidence: 97%

Chromomagnetic and chromoelectric dipole moments of quarks in the reduced 331 model

Hernández-Juárez,

Moyotl,

Tavares-Velasco

2020

Preprint

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The one-loop contributions to the chromomagnetic dipole moment μt(q 2 ) and electric dipole moment dt(q 2 ) of the top quark are calculated within the reduced 331 model (RM331) in the general case of an off-shell gluon. It is argued that the results are gauge independent for q 2 = 0 and represent valid observable quantities. In the RM331 μt(q 2 ) receives new contributions from two heavy gauge bosons Z and V + and a new neutral scalar boson h2, along with a new contribution from the standard model Higgs boson via flavor changing neutral currents. The latter, which are also mediated by the Z gauge boson and the scalar boson h2, can give a non-vanishing dt provided that there is a CP -violating phase. The analytical results are presented in terms of both Feynman parameter integrals and Passarino-Veltman scalar functions, which are useful to cross-check the numerical results. Both μt( q2 ) and dt are numerically evaluated for parameter values still allowed by the constraints from experimental data. It is found that the new one-loop contributions of the RM331 to μt(q 2 ) are of the same order of magnitude or larger than in other standard model extensions, with the dominant contribution arising from the V + gauge boson for q in the 30-1000 GeV interval and a mass mV of the order of a few hundreds of GeVs. As for dt(q 2 ), it receives the largest contribution from h2 exchange and can reach values of the order of 10 −20 , which is smaller than the contributions predicted by other standard model extensions.

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Section: Introductionmentioning

confidence: 98%

Chromomagnetic and chromoelectric dipole moments in the 4GTHDM

Hernández-Juárez

Tavares

Moyotl

2017

J. Phys.: Conf. Ser.

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The one-loop contributions to the chromomagnetic dipole momentμt(q 2) and electric dipole momentdt(q 2) of the top quark are calculated within the reduced 331 model (RM331) in the general case of an off-shell gluon. It is argued that the results are gauge independent for q 2 = 0 and represent valid observable quantities. In the RM331μt(q 2) receives new contributions from two heavy gauge bosons Z and V + and a new neutral scalar boson h2, along with a new contribution from the standard model Higgs boson via flavor changing neutral currents. The latter, which are also mediated by the Z gauge boson and the scalar boson h2, can give a non-vanishingdt provided that there is a CP-violating phase. The analytical results are presented in terms of both Feynman parameter integrals and Passarino-Veltman scalar functions, which are useful to cross-check the numerical results. Bothμt(q 2) anddt are numerically evaluated for parameter values still allowed by the constraints from experimental data. It is found that the new one-loop contributions of the RM331 toμt(q 2) are of the same order of magnitude or larger than in other standard model extensions, with the dominant contribution arising from the V + gauge boson for q in the 30-1000 GeV interval and a mass mV of the order of a few hundreds of GeVs. As fordt(q 2), it receives the largest contribution from h2 exchange and can reach values of the order of 10 −20 , which is smaller than the contributions predicted by other standard model extensions.

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Hadronic resonances with exotic electric charge

Cited by 8 publications

References 24 publications

Challenges for the 3-3-1 models

Challenges for the 3-3-1 models

Chromomagnetic and chromoelectric dipole moments of quarks in the reduced 331 model

Chromomagnetic and chromoelectric dipole moments in the 4GTHDM

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