Pub Date : 2024-03-19DOI: 10.31349/suplrevmexfis.4.021136
Antonio Enrique Cárcamo Hernández, María Catalina Espinoza Hernández, Juan Carlos Gómez-Izquierdo, Myriam Mondragón
We describe the phenomenology of the scalar and dark matter sectors of a BSM theory with Q4 symmetry among the SM fermions. The model features a Higgs portal to a dark sector comprised of heavy right handed neutrinos. We discuss relic abundance as well as direct detection constraints on the DM candidate.
我们描述了一个具有 SM 费米子 Q4 对称性的 BSM 理论的标量和暗物质部门的现象学。该模型的特点是希格斯门户通向由重右手中微子组成的暗物质部门。我们讨论了DM候选粒子的遗迹丰度和直接探测约束。
{"title":"Dark sector of a Higgs portal with Q4 symmetric matter","authors":"Antonio Enrique Cárcamo Hernández, María Catalina Espinoza Hernández, Juan Carlos Gómez-Izquierdo, Myriam Mondragón","doi":"10.31349/suplrevmexfis.4.021136","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021136","url":null,"abstract":"We describe the phenomenology of the scalar and dark matter sectors of a BSM theory with Q4 symmetry among the SM fermions. The model features a Higgs portal to a dark sector comprised of heavy right handed neutrinos. We discuss relic abundance as well as direct detection constraints on the DM candidate.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228950","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 : 2024-03-19DOI: 10.31349/suplrevmexfis.4.021135
Michael Wilkinson
We present the motivation and use-case for the proposed CODEX-b detector, as well as its description. We also describe the design and status of a smaller demonstrator detector, CODEX-beta, as of the time of the conference associated with these proceedings.
{"title":"Overview of the CODEX-b experiment","authors":"Michael Wilkinson","doi":"10.31349/suplrevmexfis.4.021135","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021135","url":null,"abstract":"We present the motivation and use-case for the proposed CODEX-b detector, as well as its description. We also describe the design and status of a smaller demonstrator detector, CODEX-beta, as of the time of the conference associated with these proceedings.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140229558","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 : 2024-01-26DOI: 10.31349/suplrevmexfis.4.021133
Jalil Villalobos Alva, C. U. Estrada, C. A. Ángeles, M. R. García
In this article, two image reconstruction techniques for radiography and tomography using cosmic ray muons are presented. The simulation is carried out using the Geant4 package, simulating a multiple coincidence system of four RPCs (Resistive Plate Chambers). The reconstruction techniques presented are based on particle trajectory reconstruction and localization of a single center of dispersion. Two functional cases are displayed for each technique.
{"title":"Implementation and improvement of image reconstruction techniques using muons from cosmic rays","authors":"Jalil Villalobos Alva, C. U. Estrada, C. A. Ángeles, M. R. García","doi":"10.31349/suplrevmexfis.4.021133","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021133","url":null,"abstract":"In this article, two image reconstruction techniques for radiography and tomography using cosmic ray muons are presented. The simulation is carried out using the Geant4 package, simulating a multiple coincidence system of four RPCs (Resistive Plate Chambers). The reconstruction techniques presented are based on particle trajectory reconstruction and localization of a single center of dispersion. Two functional cases are displayed for each technique.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140493658","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 : 2023-11-09DOI: 10.31349/suplrevmexfis.4.021129
Inti Ernesto Chávez Ménez, J. H. Montes de Oca Yemha, Estela Alejandra Garcés García, Ricardo Gaitán Lozano
In this work we briefly review dark matter evidence, in the Weakly Interacting Massive Particles (WIMP) paradigm we study the cases of scalar and fermion dark matter candidates. Our study introduces effective couplings between dark matter and Standard Model matter, it is intended as an exercise for academic purposes setting up the required tools for a further analysis. Under the last assumption, we calculate the relic density in order to constrain the model parameter space.
{"title":"Dark matter from an effective couplings approach","authors":"Inti Ernesto Chávez Ménez, J. H. Montes de Oca Yemha, Estela Alejandra Garcés García, Ricardo Gaitán Lozano","doi":"10.31349/suplrevmexfis.4.021129","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021129","url":null,"abstract":"In this work we briefly review dark matter evidence, in the Weakly Interacting Massive Particles (WIMP) paradigm we study the cases of scalar and fermion dark matter candidates. Our study introduces effective couplings between dark matter and Standard Model matter, it is intended as an exercise for academic purposes setting up the required tools for a further analysis. Under the last assumption, we calculate the relic density in order to constrain the model parameter space.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139282039","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 : 2023-11-09DOI: 10.31349/suplrevmexfis.4.021130
I. Pacheco
By understanding neutrino masses via an inverse seesaw mechanism, the Littlest Higgs model with T parity is enlarged. Promising predictions for lepton flavor violating processes within this setting (see refs.~cite{IvanPachecoZ,Ivan2}) are reviewed.
{"title":"New limits on lepton flavour violating processes in the Littlest Higgs model with T-parity","authors":"I. Pacheco","doi":"10.31349/suplrevmexfis.4.021130","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021130","url":null,"abstract":"By understanding neutrino masses via an inverse seesaw mechanism, the Littlest Higgs model with T parity is enlarged. Promising predictions for lepton flavor violating processes within this setting (see refs.~cite{IvanPachecoZ,Ivan2}) are reviewed.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139281960","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}
We discuss the conditions for QGP formation under the Color String Percolation Model. Since the observables in the percolation theory are sensitive to the system size, we expect the finite size effects take a relevant contribution to the estimation of the color string observables, such as the transition temperature or the center of mass energy needed for the QGP formation. We observe that pp collisions (small systems) require around 20 times bigger center of mass energy than heavy ion collisions. Our results are consistent with the experiments claiming that the QGP has been observed.
{"title":"Minimal center-of-mass energy required for QGP formation in pp and AA collisions","authors":"Diana Rosales Herrera, Arturo Fernández Téllez, Jhony Ramírez","doi":"10.31349/suplrevmexfis.4.021125","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021125","url":null,"abstract":"We discuss the conditions for QGP formation under the Color String Percolation Model. Since the observables in the percolation theory are sensitive to the system size, we expect the finite size effects take a relevant contribution to the estimation of the color string observables, such as the transition temperature or the center of mass energy needed for the QGP formation. We observe that pp collisions (small systems) require around 20 times bigger center of mass energy than heavy ion collisions. Our results are consistent with the experiments claiming that the QGP has been observed.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723791","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 : 2023-11-06DOI: 10.31349/suplrevmexfis.4.021127
Aldair Hernández Cruz, Jose Halim Montes de Oca Yemha, Ricardo Gaitán Lozano
We discuss extensions to the Standard Model that increase only the scalar sector, specifically with a singlet and doublet fields. We consider the current values and limits for the Dark Matter (DM) observables in order to constraint the model parameters. We also take into account the latest data related to the physics of the Higgs. We find an update allowed regions for the masses of the DM particle for each extended model in this work.
{"title":"Update on the parameter space for the dark matter with extended scalar sector","authors":"Aldair Hernández Cruz, Jose Halim Montes de Oca Yemha, Ricardo Gaitán Lozano","doi":"10.31349/suplrevmexfis.4.021127","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021127","url":null,"abstract":"We discuss extensions to the Standard Model that increase only the scalar sector, specifically with a singlet and doublet fields. We consider the current values and limits for the Dark Matter (DM) observables in order to constraint the model parameters. We also take into account the latest data related to the physics of the Higgs. We find an update allowed regions for the masses of the DM particle for each extended model in this work.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723789","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 : 2023-11-06DOI: 10.31349/suplrevmexfis.4.021126
Antonio Enrique Cárcamo Hernández, María Catalina Espinoza Hernández, Juan Carlos Gómez-Izquierdo, Juan Marchant González, Myriam Mondragón
Discrete Flavor Symmetries are often employed in BSM constructions to successfully recreate fermion masses and mixing patterns through several known mechanisms. Obvious constraints on these types of scenarios are the non-observation of Flavour Changing Neutral Currents which set stringent limits. In this talk I will discuss the strategy of using the scalar sector phenomenology predicted by such BSM models, and its correlation with the dark matter sector, to further strengthen the constraints by exploiting the large data available from heavy scalar searches in colliders including recent likelihood profiles provided by ATLAS and CMS.
{"title":"Constraining BSM discrete flavor symmetries with heavy scalar searches at colliders","authors":"Antonio Enrique Cárcamo Hernández, María Catalina Espinoza Hernández, Juan Carlos Gómez-Izquierdo, Juan Marchant González, Myriam Mondragón","doi":"10.31349/suplrevmexfis.4.021126","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021126","url":null,"abstract":"Discrete Flavor Symmetries are often employed in BSM constructions to successfully recreate fermion masses and mixing patterns through several known mechanisms. Obvious constraints on these types of scenarios are the non-observation of Flavour Changing Neutral Currents which set stringent limits. In this talk I will discuss the strategy of using the scalar sector phenomenology predicted by such BSM models, and its correlation with the dark matter sector, to further strengthen the constraints by exploiting the large data available from heavy scalar searches in colliders including recent likelihood profiles provided by ATLAS and CMS.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135723790","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 : 2023-11-06DOI: 10.31349/suplrevmexfis.4.021128
A. Bouzas, Francisco Larios
Collisions of electrons against muons provide a very clean environment for many beyond SM signals. We consider the case of two-to-two flavor changing processes that are absent in the SM. The sensitivity of the e-muon collider to the four-fermion dimension six operators is about the same order of magnitude as the one based on low energy measurements.
电子与μ介子的碰撞为许多超越SM的信号提供了一个非常干净的环境。我们考虑的是 SM 中不存在的二对二味道变化过程。电子μ介子对撞机对四费米子六维度算子的灵敏度与基于低能测量的灵敏度在数量级上差不多。
{"title":"An electron-muon collider: what can be probed with it?","authors":"A. Bouzas, Francisco Larios","doi":"10.31349/suplrevmexfis.4.021128","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021128","url":null,"abstract":"Collisions of electrons against muons provide a very clean environment for many beyond SM signals. We consider the case of two-to-two flavor changing processes that are absent in the SM. The sensitivity of the e-muon collider to the four-fermion dimension six operators is about the same order of magnitude as the one based on low energy measurements.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139287968","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}
We report on the core-corona model developed to describe the main features of hyperon global polarization in semicentral relativistic heavy-ion collisions as a function of the collision energy. We first neglect the contribution to polarization from hyperons produced in the corona. In this scenario, the global polarization turns out to be described by a delicate balance between the vorticity-to-spin transferring reactions in the core and the predominance of corona over core matter at low energies. We show how this last feature provides a key ingredient missing in our original model that helps to better describe the excitation function for Λ and Λ global polarization. To improve the description, we then introduce the contribution to the global polarization coming from the transverse polarization of Λs produced in the corona, which is hereby assumed to be similar to the well-known polarization produced in p + p reactions. The results show a small positive contribution to the global polarization, however they are not yet conclusive due to the small size of the MC sample used in the analysis.
{"title":"Core-corona approach to describe hyperon global polarization in semi-central relativistic heavy-ion collisions","authors":"Alejandro Ayala, Isabel Domínguez, Ivonne Alicia Maldonado Cervantes, María-Elena Tejeda-Yeomans","doi":"10.31349/suplrevmexfis.4.021109","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.4.021109","url":null,"abstract":"We report on the core-corona model developed to describe the main features of hyperon global polarization in semicentral relativistic heavy-ion collisions as a function of the collision energy. We first neglect the contribution to polarization from hyperons produced in the corona. In this scenario, the global polarization turns out to be described by a delicate balance between the vorticity-to-spin transferring reactions in the core and the predominance of corona over core matter at low energies. We show how this last feature provides a key ingredient missing in our original model that helps to better describe the excitation function for Λ and Λ global polarization. To improve the description, we then introduce the contribution to the global polarization coming from the transverse polarization of Λs produced in the corona, which is hereby assumed to be similar to the well-known polarization produced in p + p reactions. The results show a small positive contribution to the global polarization, however they are not yet conclusive due to the small size of the MC sample used in the analysis.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136336321","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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