5th ComHEP: Colombian Meeting on High Energy Physics

Session

Formal theory

30 Nov 2020, 15:00

Conveners

Formal theory: Phenomenology

• José David Ruiz Álvarez (Universidad de Antioquia)
• Carlos Sandoval Usme (Universidad Nacional de Colombia)
• Carlos Andres Florez Bustos (Universidad de los Andes (CO))
• Gabriela Alejandra Navarro (Universidad Antonio Narino (CO))

Formal theory: Theory

• Alexander Moreno Briceño (Universidad Antonio Nariño)
• Andrés Fernando Castillo Ramirez (Universidad Nacional de Colombia)

70. 3-3-1 model with right neutrinos, implemented in SARAH and SPheno

Dr Alex Tapia (University of Medellin)

30/11/2020, 15:00

Higgs / Standard model

Regular Talk (15'+5')

In this work, for the first time the implementation of the 3-3-1 model with right-handed neutrinos without exotic electric charges in SARAH package of MATHEMATICA is presented, and it shows how it correctly reproduces the analytical results of the model. As proof of this, we present the mass matrices for the quark sectors, where a Higgs sector with three scalar triplets has been used. Then,...

19. Explaining muon g-2 anomaly in a non-universal U(1)X extended SUSY theory

Juan Sebastian Alvarado Galeano (Universidad Nacional de Colombia)

30/11/2020, 15:20

Higgs / Standard model

Regular Talk (15'+5')

It is presented a non-universal $U(1{)}_X$ extension to the Standard Model with two scalar doublets, two scalar singlets, three additional quark singlets, two lepton singlets and three generations of right-handed and Majorana neutrinos is made to explain lepton mass hierarchy and muon anomalous magnetic moment in a chiral anomaly free framework. Besides, neutrino mass generation is achieved by...

30. External Momentum Dependence from the Higgs Boson Mass

Edilson Alfonso Reyes Rojas (UNAL, DESY)

30/11/2020, 15:40

Higgs / Standard model

Regular Talk (15'+5')

The three-loop corrections to the Higgs boson mass are usually computed in the on-shell scheme using the effective potential approach, where the external momentum are put equal to zero. In this presentation we are going to discuss the technical details for the Feynman diagrammatic computation of the external momentum dependence coming from the three-loop self-energy corrections to the Higgs...

20. Quantum Machine Learning concepts for HEP

Ms Vijayasri Iyer (Department of Information Technology)

30/11/2020, 16:00

Higgs / Standard model

Regular Talk (15'+5')

This contribution explores the Machine Learning techniques and Quantum Computing concepts and applications in High Energy Physics considering a phenomenological and theoretical view. Besides, we show the main tools to explore the Standard Model extensions, decay process and the parameter space. With this set of tools, we want to explore the bounds and define exclusion regions, those bounds...

94. Discussion

30/11/2020, 16:20

76. EFTs: Bounding the systematic uncertainties of the Inverse Amplitude Method

Felipe J. Llanes-Estrada

01/12/2020, 08:00

77. Scattering Amplitudes: QCD and gravity applications

Dr William J. Torres Bobadilla (IFIC CSIC-UV)

01/12/2020, 08:40

1. Algebraic approach to scattering amplitudes

Cristhiam Lopez Arcos

01/12/2020, 09:35

Formal theory

Regular Talk (15'+5')

In this talk I will present our recent advances in the calculation of scattering amplitudes using strong homotopy algebras. This prescription inspired from string field theory allows to construct a generating function for all the tree-level scattering amplitudes. Several examples will be presented.

8. Non-linear Regge trajectories with AdS/QCD

Miguel Angel Martín Contreras (Universidad de Valparaíso)

01/12/2020, 09:55

Formal theory

Regular Talk (15'+5')

In this work, we consider a non-quadratic dilaton $\mathrm{\Phi }(z)=(\kappa z{)}^{2-\alpha }$ in the context of the static soft wall model to describe the mass spectrum of a wide range of vector mesons from the light up to the heavy sectors. The effect of this non-quadratic approach is translated into non-linear Regge trajectories with the generic form $M^2=a(n+b{)}^{\nu }$. We apply this sort of fits for...

11. Noncommutative momentum and torsional regularization

Nikodem Poplawski

01/12/2020, 10:15

Formal theory

Regular Talk (15'+5')

We show that in the presence of the torsion tensor $S_{\phantom{k}ij}^k$, the quantum commutation relation for the four-momentum, traced over spinor indices, is given by $[p_i,p_j]=2i\hslash S_{\phantom{k}ij}^k{p}_k$.
In the Einstein--Cartan theory of gravity, in which torsion is coupled to spin of fermions, this relation in a coordinate frame reduces to a commutation relation of noncommutative...

34. Generation of Carroll-Field-Jackiw term in Horava-Lifshitz z=3 CPT-violating QED

Mr Ricardo Martínez (Universidade Federal de Alagoas)

01/12/2020, 10:35

Formal theory

Regular Talk (15'+5')

Theories with anisotropy between space and time, also called Horava-Lifshtiz (HL) theories, has been studied in many works since the seminal paper of P. Horava was published, where the Lifshitz scaling is used to construct a power counting renormalizable gravity model. The Lifshitz scaling is described by the transformation $x\to bx$, $t\to b^{z}t$, where the integer $z$ is...

95. Discussion

01/12/2020, 10:55