Theoretical High Energy Physics

Because of its achievements, the Theoretical High Energy Physics Group at BUAP, could be considered as one of the research bodies with largest impact at BUAP. The group is devoted to study the fundamental laws that describe the most intimate structure of matter and the universe, as well as its tests at colliders and the cosmos.

These laws are based on the principles of quantum mechanics and relativity, two of the pillars of modern physics; the tools used in our work employ mathematical methods that describe the evolution of quantum systems at relativistic energies, by incorporating the symmetries of such systems.

Research Interest

  1. Higgs physics within the SM and beyond. This includes work on multi-Higgs models, its formulation and the search for signals of the complete Higgs spectrum at current (LHC) and future colliders (VLHC, ILC).
  2. Supersymmetric models. Our work in this area deals with the Higgs sector, of the minimal SUSY extension of the SM (MSSM) and with the possible dark matter candidates, such as the neutralino and the gravitino.
  3. Astroparticles. Our work here deals with the construction of extensions of the Standard Model that include a dark matter candidate, as well as new sources of CP violation, which could have some impact on cosmology.
  4. Astroparticles. Our work here deals with the construction of extensions of the Standard Model that include a dark matter candidate, as well as new sources of CP violation, which could have some impact on cosmolog



All of members of this group has been recognized with the highest honors of the National Research System (S.N.I. - Level 3), and have published highly cites papers, including several dozens of them ranked in the SLAC Hep-Inspire database within the top50 and top100 papers, there is also a couple of top250 papers and one top500 paper. Some of our papers on rare Higgs and top quark decays have motivated experimental searches at the accelerators Fermilab Tevatron and CERN-LHC, which cite our work. In addition, the research of Dr. JL Diaz Cruz on Vacuum Alignment and Higgs Physics, has motivated new research lines at several institutions in the world.

Senior Researchers

J. Lorenzo Diaz Cruz Ph.D. (Principal Investigator)

Prof. Díaz Cruz has a Ph.D. in Theoretical Physics from the University of Michigan (1989); he also holds a M.SC degree from CINVESTAV-IPN (México) and Undergraduate degree from Universidad Autónoma Metropolitana (México). After a postdoctoral position at Universidad Autónoma de Barcelona (1990-1992), he returned to México for a research position at the Physics Department of CINVESTAV-IPN (México). Currently, he has a permanent position as “Profesor-Investigador Titular C” at Benemerita Universidad Autónoma de Puebla (México). Dr Diaz-Cruz is member of the “Academia Mexicana de Ciencias, and acted as President of the Division of Particles and Fields of the Mexican Physical Society for the period 2000-2002. As member of “Sistema Nacional de Investigadores” (SNI, level 3), he has also been part of the SNI and CONACYT evaluation committee. His research work in the area of Elementary Particle Physics has produced over 130 papers, 89 of them being published in international indexed journals. Some of his papers dealing with the properties of Higgs particles have inspired searches at experimental facilities, such as Fermilab (USA) and CERN (Europe). His complete papers have generated over 3400 citations. Dr Diaz-Cruz has delivered seminars and talks at universities in USA, Spain, Japan, England, Italy, Poland, Russia, Brazil and Taiwan. He has been visiting professor at University of California (Berkeley), Michigan State University (USA), Warsaw University (Poland) and Universidad de Zaragoza (Spain). He received a Honorary Mention at Premio Nacional de la Juventud (1985, México) and the Puebla Prize for Science and Technology Achievements in 2009.

Alfonso Rosado Ph.D.

Alfonso Rosado Sánchez obtained a degree in Physics in the Faculty of Cs. Physical-Mathematics of the BUAP. He did postgraduate studies in the Physics Department of the Cinvestav-IPN (M. en C .: 1981 and D. en C .: 1984). He did a postdoctoral stay from April 1985 to March 1987, at the Physikalisches Institut der Universität Würzburg, Germany. He worked as Professor-Researcher from March 1987 to February 1991 in the Physics Department of CINVESTAV-IPN. Since March 1, 1991, he is Professor-Researcher, at the Institute of Physics of the BUAP. He is a member of the National System of Researchers (Level III). His research area is the Physics of elementary particles and currently has more than 60 publications (more than 50 articles published in international journals with arbitration). He has given specialized and divulgation conferences in Mexico and abroad. He has directed 9 bachelor's, 11 master's and 10 doctoral theses. Of its 10 doctoral students, 7 belong to the SNI: One is Level III, two are Level II, three are Level I and one is Candidate for Researcher. He has taught more than 100 undergraduate and postgraduate courses in the Cinvestav of the IPN, in the BUAP and in the UDLAP. He is a member of the Mexican Academy of Sciences, AC (Before: Academy of Scientific Research, AC), date of entry: January 1991. In recognition of his academic and scientific work he received the State Prize for Science and Technology 2010, in the Area of Exact Sciences of the Council of Science and Technology of the State of Puebla, on January 17, 2011 and the "Medal of Performance and Teaching Trajectory", granted by the Benemérita Autonomous University of Puebla, on May 20, 2015.

Gilberto Tavares Ph.D.

Dr. Tavares-Velasco graduated as a bachelor of science degree in engineering physics at Universidad Autónoma Metropolitana, with a final project on numerical solutions to Navier-Stokes equations by the finite element method. He then went on to pursue a Ph. D at the Physics Department of Cinvestav IPN under the advice of  Dr. Miguel Angel Pérez Angón, and he graduated in 2001 with the  thesis entitled “New physics in rare process involving the Z gauge boson, the top quark and the photon”, out of which 7 research articles were published in peer-reviewed international journals. After a short stint as a postdoctoral fellow at Instituto de Física de la Universidad Michoacana de San Nicolas de Hidalgo, Dr. Tavares-Velasco incorporated in 2003 as a full-time professor at the Facultad de Ciencias Físico Matemáticas de la Benemérita Universidad Autónoma Metropolitana. The bulk of the research work of Dr. Tavares-Velasco has been focused on the study of the phenomenology of the weak interaction in the standard model and extension theories, with special emphasis on the calculation of radiative corrections at the one-loop level.  As of 2018, Dr. Tavares-Velasco has advised the thesis projects of 12 bachelor students, 9 master of science students and 5 Ph. D students. His scientific production consists of 49 research articles published in peer-reviewed international journals such as Physical Review D (33), Physics Letter B (5), Journal of Physics G (5), International Journal of Modern Physics A (4), Europhysical Journal C (1) and Europhysics Letters (1). According to the INSPIRE preprint database, as of november 2018, Dr. Tavares-Velasco’s articles had received 469 citations,  excluding self-citations. In 2015, Dr. Tavares-Velasco was promoted to national researcher level III in Sistema Nacional de Investigadores of Conacyt (México).

Associated researchers at BUAP


Centro Internacional de Física Fundamental (CIFFU)


Graduate Students

Bryan Larios (PhD, completed in 2018)

C. Arellano (PhD, in progress)

Mario Perez de León (PhD, in progress)

Victor Manuel Lopez (PhD. In progress)

M. Zeleny (PhD. In progress)

In addition, the group includes 3 MSc students and 5 Undergrads, that are working for their thesis under the supervision of group members.

Collaborative Networks

International collaborations



National collaborations



Lorenzo Diaz

Diffraction of particles in free fall
D. Condado, J.L. Díaz-Cruz, A. Rosado, E. Sadurní. Jun 6, 2018. 10 pp. Published in Phys.Rev. A98 (2018) no.4, 043618. DOI: 10.1103/PhysRevA.98.043618

HAWC Contributions to the 36th International Cosmic Ray Conference
(ICRC2019).  A.U. Abeysekara, A. Albert, R. Alfaro, C. Alvarez, J.D. ÁlvarezShow
e-Print: 1909.01808 [astro-ph.HE]. View in: ADS Abstract Service

The Higgs profile in the standard model and beyond
J. Lorenzo Díaz-Cruz(Puebla U., Mexico), Apr 15, 2019, 21 pages.
Published in: Rev.Mex.Fis. 65 (2019) 5, 419-439. DOI: 10.31349/RevMexFis.65.419  


Sent manuscripts

Very long-lived Stop NLSP in MSSM scenarios with Gravitino LSP
J. Lorenzo Diaz-Cruz(Puebla U., Mexico), Bryan O. Larios(Puebla U., Mexico), Jan 18, 2019, 21 pages. e-Print: 1901.06352 [hep-ph]

A Private SUSY 4HDM with FCNC in the Up-sector
J.Lorenzo Díaz-Cruz(Puebla U., Mexico), Bryan O. Larios-Lopez(Puebla U.), M.A. Perez-de Leon(Puebla U.),Jan 4, 2019, 14 pages. e-Print: 1901.01304 [hep-ph]
El texto debe conducir a este link:


Alfonso Rosado

Phenomenology of the Partially Aligned 2HDM with leptonic decay of mesons

A. Carrillo-Monteverde (Sussex U.), S. Gómez-Ávila (UAEH, Pachuca), R. Gómez-Rosas (Puebla U., Inst. Fis.), L. Lopez-Lozano (UAEH, Pachuca), A. Rosado (Puebla U., Inst. Fis.). Dec 4, 2018. 21 pp.


Gilberto Tavares

Chromomagnetic and chromoelectric dipole moments of the top quark in the fourth-generation THDM

A.I. Hernández-Juárez, A. Moyotl, G. Tavares-Velasco (Puebla U., Mexico). May 2, 2018. 19 pp. Published in Phys.Rev. D98 (2018) no.3, 035040. DOI: 10.1103/PhysRevD.98.035040




  1. Workshop on CP Studies and Non-Standard Higgs Physics
    E. Accomando et al.. Jul 2006. 542 pp.
    DOI: 10.5170/CERN-2006-009
    e-Print: hep-ph/0608079 | PDF
    Detailed record - Cited by 376 records


  2. Report of the Tevatron Higgs working group
    Higgs Working Group (Marcela Carena (Fermilab) et al.). Oct 2000. 185 pp.
    FERMILAB-CONF-00-279-T, SCIPP-00-37
    e-Print: hep-ph/0010338 | PDF
    Detailed record - Cited by 509 records


  3. Lepton flavor violating decays of Higgs bosons beyond the standard model
    J.Lorenzo Diaz-Cruz, J.J. Toscano (Puebla U., Mexico). Oct 1999. 11 pp.
    Published in Phys.Rev. D62 (2000) 116005
    DOI: 10.1103/PhysRevD.62.116005
    e-Print: hep-ph/9910233 | PDF
    Detailed record - Cited by 131 records


  4. Probing Higgs bosons with large bottom Yukawa coupling at hadron colliders
    C. Balazs (Michigan State U. & Fermilab), J.L. Diaz-Cruz (Puebla U., Inst. Fis.), H.J. He (Michigan State U. & Fermilab), Timothy M.P. Tait (Fermilab& Argonne), C.P. Yuan (Fermilab). Jul 1998. 49 pp.
    Published in Phys.Rev. D59 (1999) 055016
    MSUHEP-80515, FERMILAB-PUB-98-182-T, ANL-HEP-PR-98-55
    DOI: 10.1103/PhysRevD.59.055016
    e-Print: hep-ph/9807349 | PDF
    Detailed record - Cited by 110 records


  5. Flavor Changing Radiative Decay of Thf T Quark
    J.L. Diaz-Cruz (Michigan U.), R. Martinez, M.A. Perez, A. Rosado (CINVESTAV, IPN). Oct 27, 1989. 16 pp.
    Published in Phys.Rev. D41 (1990) 891-894
    DOI: 10.1103/PhysRevD.41.891
    Detailed record - Cited by 124 records

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