Pub Date : 2022-06-29DOI: 10.31349/suplrevmexfis.3.0308012
Lei Xia
The strangeonium state φ(2170) is studied and presented. The processes of e +e − → K+K−, e +e − → K0 SK0 L, e +e − → φK+K− /K+K−K+K−, e +e − → φη, e +e − → φη0 , e +e − → K+K−π 0π 0 and e +e − → ωη are investigated. And the cross sections are measured precisely in the center-of-mass (c.m.) energy region from 2.00 to 3.08 GeV. The parameters of φ(2170) have been extracted from the lineshapes where applicable
{"title":"Study of φ(2170) at BESIII","authors":"Lei Xia","doi":"10.31349/suplrevmexfis.3.0308012","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308012","url":null,"abstract":"The strangeonium state φ(2170) is studied and presented. The processes of e +e − → K+K−, e +e − → K0 SK0 L, e +e − → φK+K− /K+K−K+K−, e +e − → φη, e +e − → φη0 , e +e − → K+K−π 0π 0 and e +e − → ωη are investigated. And the cross sections are measured precisely in the center-of-mass (c.m.) energy region from 2.00 to 3.08 GeV. The parameters of φ(2170) have been extracted from the lineshapes where applicable","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134485538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-27DOI: 10.31349/suplrevmexfis.3.020725
M. Arroyo-Ureña, R. Gaitan, J. Lamprea, J. H. Montes de Oca Yemha, T. A. Valencia-Pérez
We discussed the feasibility of including dark matter in the Left-Right Mirror Model with an additional discrete Z2 symmetry. The Z2 symmetry helps to prevent any decay of the possible dark matter candidate, that is, guarantees the stability of the dark matter. The dark matter candidate is proposed as the lightest mirror neutrino. This Z2 discrete symmetry not only guarantees the stability of the dark matter but also controls the free parameters of the model such that they are significantly reduced. Then, mass spectrum of neutrinos is also discussed in two possible scenarios obtained by assigning charge under Z2 symmetry. For one of the scenarios we obtain the relic density for the dark matter candidate and the spin independent scattering cross section between dark matter and proton (neutron).
{"title":"Dark matter and neutrinos in Left-Right Mirror Model with Z2 symmetry","authors":"M. Arroyo-Ureña, R. Gaitan, J. Lamprea, J. H. Montes de Oca Yemha, T. A. Valencia-Pérez","doi":"10.31349/suplrevmexfis.3.020725","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020725","url":null,"abstract":"We discussed the feasibility of including dark matter in the Left-Right Mirror Model with an additional discrete Z2 symmetry. The Z2 symmetry helps to prevent any decay of the possible dark matter candidate, that is, guarantees the stability of the dark matter. The dark matter candidate is proposed as the lightest mirror neutrino. This Z2 discrete symmetry not only guarantees the stability of the dark matter but also controls the free parameters of the model such that they are significantly reduced. Then, mass spectrum of neutrinos is also discussed in two possible scenarios obtained by assigning charge under Z2 symmetry. For one of the scenarios we obtain the relic density for the dark matter candidate and the spin independent scattering cross section between dark matter and proton (neutron).","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132602433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-27DOI: 10.31349/suplrevmexfis.3.020726
Stefan Daniel Nellen Mondragón
A model is presented, where the Froggatt-Nielsen and Peccei-Quinn symmetries are identified. This provides a solution to the strong CP problem and an explanation to the fermion mass hierarchy. At leading order, the quark mass matrix possess a Nearest-Neighbour-Interaction structure, while the neutrino mass matrix has a Majorana A2 texture. From a thorough numerical analysis the viability of this model is asserted, by comparing against current measurements. The data obtained from this analysis is then used to study properties from the axion.
{"title":"Flavourful axion and the Peccei-Quinn symmetry","authors":"Stefan Daniel Nellen Mondragón","doi":"10.31349/suplrevmexfis.3.020726","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020726","url":null,"abstract":"A model is presented, where the Froggatt-Nielsen and Peccei-Quinn symmetries are identified. This provides a solution to the strong CP problem and an explanation to the fermion mass hierarchy. At leading order, the quark mass matrix possess a Nearest-Neighbour-Interaction structure, while the neutrino mass matrix has a Majorana A2 texture. From a thorough numerical analysis the viability of this model is asserted, by comparing against current measurements. The data obtained from this analysis is then used to study properties from the axion.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133782801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-24DOI: 10.31349/suplrevmexfis.3.010605
Alejandro Campos Rodríguez, L. Fuentes-Montero, L. F. Fuentes Cobas, Juan Narváez Monroy, E. Villalobos-Portillo
Crystallographic algorithms and computer programs play significant roles in materials’ characterization. A software package for the quantitative characterization of crystallographic texture, under axial symmetry conditions, is presented. The proposed methodology is intended for use with both electrons and high-energy synchrotron X-rays. Three different programs are introduced. Anaelu and Grazing are based on the Rietveld modelling approach. Dianne follows the Bunge’s symmetrized spherical harmonics method. A SrTiO3 model sample is proposed as a hypothetical study case.
{"title":"System of methods and programs for the characterization of axial textures by synchrotron light and electrons","authors":"Alejandro Campos Rodríguez, L. Fuentes-Montero, L. F. Fuentes Cobas, Juan Narváez Monroy, E. Villalobos-Portillo","doi":"10.31349/suplrevmexfis.3.010605","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.010605","url":null,"abstract":"Crystallographic algorithms and computer programs play significant roles in materials’ characterization. A software package for the quantitative characterization of crystallographic texture, under axial symmetry conditions, is presented. The proposed methodology is intended for use with both electrons and high-energy synchrotron X-rays. Three different programs are introduced. Anaelu and Grazing are based on the Rietveld modelling approach. Dianne follows the Bunge’s symmetrized spherical harmonics method. A SrTiO3 model sample is proposed as a hypothetical study case.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116103780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-24DOI: 10.31349/suplrevmexfis.3.010607
Ó. E. López-López, R. Domínguez-García, M. E. Montero-Cabrera, L. Pardo, L. Fuentes-Cobas
This work presents the results of a simulation by the Monte Carlo method, performed through the GEANT4 code, of the irradiation and energy deposition by high flux X-rays on the piezoelectric ceramic Bismuth-Sodium Titanate doped with Barium. X-rays energies were around the Ti-K absorption edge emulating a transmission experiment, and the irradiation with 5300 eV X-rays for a fluorescence experiment. The method consists of introducing the data that describes a characteristic R3c structure of the polarized ceramic, reported in the literature. The absorption coefficients for the energies of interest, as well as the energy deposited in the form of radiation doses, are calculated. Intensity changes for specific energy lines in the micro-fluorescence spectra, which suggest the presence of vacancies in the crystal structure, are verified via simulation. The vacancy density produced by a typical photon flux of a fourth-generation synchrotron beam is calculated through the threshold displacement energy for vacancy production. Consequently, the simulation is carried out for a structure with appropriate Bi and O vacancies, and the ability to detect the radiation damage is verified by comparison with micro-XRF and XAFS experimental results. The simulation predicts a maximum dose of 1.21-1.27x105 Gy irradiating 107 photons for the given energy and a maximum vacancy density of 1.10x108 / micron3 for oxygen atoms and 6.90x107 /micron3 for bismuth atoms.
{"title":"Monte Carlo simulation of vacancies produced in lead-free piezo-ceramics by X-ray radiation damage","authors":"Ó. E. López-López, R. Domínguez-García, M. E. Montero-Cabrera, L. Pardo, L. Fuentes-Cobas","doi":"10.31349/suplrevmexfis.3.010607","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.010607","url":null,"abstract":"This work presents the results of a simulation by the Monte Carlo method, performed through the GEANT4 code, of the irradiation and energy deposition by high flux X-rays on the piezoelectric ceramic Bismuth-Sodium Titanate doped with Barium. X-rays energies were around the Ti-K absorption edge emulating a transmission experiment, and the irradiation with 5300 eV X-rays for a fluorescence experiment. The method consists of introducing the data that describes a characteristic R3c structure of the polarized ceramic, reported in the literature. The absorption coefficients for the energies of interest, as well as the energy deposited in the form of radiation doses, are calculated. Intensity changes for specific energy lines in the micro-fluorescence spectra, which suggest the presence of vacancies in the crystal structure, are verified via simulation. The vacancy density produced by a typical photon flux of a fourth-generation synchrotron beam is calculated through the threshold displacement energy for vacancy production. Consequently, the simulation is carried out for a structure with appropriate Bi and O vacancies, and the ability to detect the radiation damage is verified by comparison with micro-XRF and XAFS experimental results. The simulation predicts a maximum dose of 1.21-1.27x105 Gy irradiating 107 photons for the given energy and a maximum vacancy density of 1.10x108 / micron3 for oxygen atoms and 6.90x107 /micron3 for bismuth atoms.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121623428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-24DOI: 10.31349/suplrevmexfis.3.010606
Victoria Pérez-Reyes, R. M. Cabral-Lares, C. Méndez-García, C. Caraveo-Castro, I. Reyes-Cortés, Jorge Carrillo-Flores, M. E. Montero-Cabrera
In Chihuahua, an important source of environmental radioactivity is found in the Sierra Peña Blanca, in the center of the state. The site comprises about 70% of uranium reserves in Mexico. The uranium of Peña Blanca was explored and partially exploited in the '80s. Due to the closure of operations, the extracted and unprocessed ore (hundreds of tons) was confined to rocky stacks, exposed to weathering. Subject to leaching, this uranium is transported from the mountains to Laguna del Cuervo. The mineral exposed in the repository and the uranium transport by surface water and recent sediments must be studied, to assess the effects on the environment, with radiometric and materials science techniques in conventional laboratories and synchrotron light. This work presents the study of sediment and pore water samples at various points along the lagoon, and the values of the activity ratio of the 234U/238U isotopes and the sediment-water distribution coefficient of these isotopes, obtained by applying uranium liquid scintillation alpha spectrometry, gamma-ray spectrometry, scanning electron microscopy and X-ray diffraction methods.
{"title":"Transport and concentration of uranium isotopes in the Laguna del Cuervo, Chihuahua, Mexico","authors":"Victoria Pérez-Reyes, R. M. Cabral-Lares, C. Méndez-García, C. Caraveo-Castro, I. Reyes-Cortés, Jorge Carrillo-Flores, M. E. Montero-Cabrera","doi":"10.31349/suplrevmexfis.3.010606","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.010606","url":null,"abstract":"In Chihuahua, an important source of environmental radioactivity is found in the Sierra Peña Blanca, in the center of the state. The site comprises about 70% of uranium reserves in Mexico. The uranium of Peña Blanca was explored and partially exploited in the '80s. Due to the closure of operations, the extracted and unprocessed ore (hundreds of tons) was confined to rocky stacks, exposed to weathering. Subject to leaching, this uranium is transported from the mountains to Laguna del Cuervo. The mineral exposed in the repository and the uranium transport by surface water and recent sediments must be studied, to assess the effects on the environment, with radiometric and materials science techniques in conventional laboratories and synchrotron light. This work presents the study of sediment and pore water samples at various points along the lagoon, and the values of the activity ratio of the 234U/238U isotopes and the sediment-water distribution coefficient of these isotopes, obtained by applying uranium liquid scintillation alpha spectrometry, gamma-ray spectrometry, scanning electron microscopy and X-ray diffraction methods.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116120143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-23DOI: 10.31349/suplrevmexfis.3.020722
J. F. Benitez, H. Encinas Acosta, A. Sehrawat, C. Oropeza Barrera
The design and expected performance for precision luminosity measurement of the Tracker Endcap Pixel (TEPX) detector for the CMS experiment at the upcoming High-Luminosity LHC (HL-LHC) is described. The TEPX detector is composed of 4 double-sided double disks at each end of CMS covering the range of | z | from 175 to 265 cm, each disk made of 5 rings composed of silicon sensors, with a total of 800 million pixels distributed across the 8 disks. Disk 4 Ring 1 (TEPXD4R1) will be dedicated to luminosity and beam-induced background measurements, utilising the same method as that of the rest of TEPX, namely pixel cluster counting. For the HL-LHC, the goal is to achieve a final uncertainty of 1% for offline luminosity measurements. The expected performance of the TEPX and TEPXD4R1 luminometers in terms of statistical precision for van der Meer scan calibration and for physics conditions, as well as the linearity performance of each disk are presented.
{"title":"Design of the TEPX luminometer for the CMS experiment at the HL-LHC","authors":"J. F. Benitez, H. Encinas Acosta, A. Sehrawat, C. Oropeza Barrera","doi":"10.31349/suplrevmexfis.3.020722","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020722","url":null,"abstract":"The design and expected performance for precision luminosity measurement of the Tracker Endcap Pixel (TEPX) detector for the CMS experiment at the upcoming High-Luminosity LHC (HL-LHC) is described. The TEPX detector is composed of 4 double-sided double disks at each end of CMS covering the range of | z | from 175 to 265 cm, each disk made of 5 rings composed of silicon sensors, with a total of 800 million pixels distributed across the 8 disks. Disk 4 Ring 1 (TEPXD4R1) will be dedicated to luminosity and beam-induced background measurements, utilising the same method as that of the rest of TEPX, namely pixel cluster counting. For the HL-LHC, the goal is to achieve a final uncertainty of 1% for offline luminosity measurements. The expected performance of the TEPX and TEPXD4R1 luminometers in terms of statistical precision for van der Meer scan calibration and for physics conditions, as well as the linearity performance of each disk are presented. \u0000 ","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134401831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-23DOI: 10.31349/suplrevmexfis.3.020721
J. Illana
After introducing the basic symmetry principles, the full Lagrangian is derived in detail and the most relevant aspects of the electroweak phenomenology are discussed with special emphasis on the determination of the input parameters and the consistency checks of the model.
{"title":"The electroweak standard model","authors":"J. Illana","doi":"10.31349/suplrevmexfis.3.020721","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020721","url":null,"abstract":"After introducing the basic symmetry principles, the full Lagrangian is derived in detail and the most relevant aspects of the electroweak phenomenology are discussed with special emphasis on the determination of the input parameters and the consistency checks of the model.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129443547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-23DOI: 10.31349/suplrevmexfis.3.020723
Sergio Sicairos-Paez, Roger Hernández Pinto
The phenomenological analysis of an extension of the Standard Model is analyzed in this manuscript. The Two Higgs Doublet Model is a simple way to incorporate a second extra doublet to the Standard Model to reduce the tension between experimental measurements and theoretical predictions. This model presents a large phenomenological signals which could guide the search for new physics at hadron colliders. In particular, we study the transverse momentum, the rapidity and the angular distributions of the jets in the $pp to j j h$ channel within the Standard Model and the Two Higgs Doublet Model in the LHC and FCC environment by means of Monte Carlo simulations made in MadGraph 5.
{"title":"Phenomenological studies in the 2HDM and SM using Madgraph 5","authors":"Sergio Sicairos-Paez, Roger Hernández Pinto","doi":"10.31349/suplrevmexfis.3.020723","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020723","url":null,"abstract":"The phenomenological analysis of an extension of the Standard Model is analyzed in this manuscript. The Two Higgs Doublet Model is a simple way to incorporate a second extra doublet to the Standard Model to reduce the tension between experimental measurements and theoretical predictions. This model presents a large phenomenological signals which could guide the search for new physics at hadron colliders. In particular, we study the transverse momentum, the rapidity and the angular distributions of the jets in the $pp to j j h$ channel within the Standard Model and the Two Higgs Doublet Model in the LHC and FCC environment by means of Monte Carlo simulations made in MadGraph 5.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126893882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-22DOI: 10.31349/suplrevmexfis.3.020719
Jesús Alejandro Miranda Hernández, Pablo Roig Garcés, Pablo Sánchez Puertas
We review the axial-vector meson contributions to the HFS of muonic hydrogen. We evaluate the impact of the singly- and doubly-virtual asymptotic behavior of the transition form factors of the axial-vector mesons. As our main result, we find an opposite sign (and a factor of 2 difference) concerning previous analyses and a novel discussion of the hadronic modeling.
{"title":"Axial-vector contributions to the HFS of muonic hydrogen","authors":"Jesús Alejandro Miranda Hernández, Pablo Roig Garcés, Pablo Sánchez Puertas","doi":"10.31349/suplrevmexfis.3.020719","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020719","url":null,"abstract":"We review the axial-vector meson contributions to the HFS of muonic hydrogen. We evaluate the impact of the singly- and doubly-virtual asymptotic behavior of the transition form factors of the axial-vector mesons. As our main result, we find an opposite sign (and a factor of 2 difference) concerning previous analyses and a novel discussion of the hadronic modeling.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123224290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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