Advances in High Energy Physics最新文献

{"title":"Coherent Photoproduction of Low-\u0000 \u0000 \u0000 p\u0000 \u0000 \u0000 T\u0000 \u0000 \u0000 Charmonium in Peripheral Heavy Ion Collisions ","authors":"Gongming Yu, Yanbing Cai, Yongping Fu, Haitao Yang, Q. Gao, Q. Hu, Liyuan Hu, W. Li, Yushou Song","doi":"10.1155/2022/1561632","DOIUrl":"https://doi.org/10.1155/2022/1561632","url":null,"abstract":"<jats:p>We calculate the centrality dependence for coherent photoproduction of very low-<jats:inline-formula>\u0000 <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\">\u0000 <msub>\u0000 <mrow>\u0000 <mi>p</mi>\u0000 </mrow>\u0000 <mrow>\u0000 <mi>T</mi>\u0000 </mrow>\u0000 </msub>\u0000 </math>\u0000 </jats:inline-formula>\u0000 <jats:inline-formula>\u0000 <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M3\">\u0000 <mi>J</mi>\u0000 <mo>/</mo>\u0000 <mi>ψ</mi>\u0000 </math>\u0000 </jats:inline-formula> at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies within the impact parameter-dependent saturated color dipole model. By using the large equivalent photon fluxes, we present the differential cross-section of very low-<jats:inline-formula>\u0000 <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M4\">\u0000 <msub>\u0000 <mrow>\u0000 <mi>p</mi>\u0000 </mrow>\u0000 <mrow>\u0000 <mi>T</mi>\u0000 </mrow>\u0000 </msub>\u0000 </math>\u0000 </jats:inline-formula>\u0000 <jats:inline-formula>\u0000 <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M5\">\u0000 <mi>J</mi>\u0000 <mo>/</mo>\u0000 <mi>ψ</mi>\u0000 </math>\u0000 </jats:inline-formula> produced by coherent photonuclear in peripheral heavy ion collisions. The numerical results demonstrate that our calculation agrees with <jats:inline-formula>\u0000 <math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M6\">\u0000 <mi>J</mi>\u0000 <mo>/</mo>\u0000 <mi>ψ</mi>\u0000 </math>\u0000 </jats:inline-formula> data in peripheral heavy ion collisions at Relativistic Heavy Ion Collider (RHIC) energies.</jats:p>","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47939455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC","authors":"O. M. Ozsimsek, V. Ari, O. University, A. University","doi":"10.1155/2022/4299254","DOIUrl":"https://doi.org/10.1155/2022/4299254","url":null,"abstract":"We investigate the potential of the HL-LHC for discovering new physics effects via the same-sign top pair signatures. We focus on the semileptonic (electron and muon) decay of the top quarks and study the reach for a simplified model approach where top quark flavor changing could occur through a neutral scalar exchange. A relatively smaller background contribution and clean signature are the advantages of the leptonic decay mode of the same-sign \u0000 \u0000 W\u0000 \u0000 bosons in the same-sign production processes of top quark pairs. Assuming the FCNC between top quark, up-type quark, and scalar boson from the new physics interactions, the branchings could be excluded of the order \u0000 \u0000 O\u0000 \u0000 \u0000 1\u0000 \u0000 \u0000 0\u0000 \u0000 \u0000 −\u0000 4\u0000 \u0000 \u0000 \u0000 \u0000 \u0000 . We use angular observables of the same-sign lepton pairs and the top quark kinematics in the process which provide the possibility of separation of new physics signal from the SM backgrounds using machine-learning techniques. We find that the same-sign top quark pair production is quite capable of testing the top-Higgs FCNCs at the HL-LHC.","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49577796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Effective Model for Glueballs and Dual Superconductivity at Finite Temperature","authors":"A. Issifu, F. A. Brito","doi":"10.1155/2021/5658568","DOIUrl":"https://doi.org/10.1155/2021/5658568","url":null,"abstract":"&lt;jats:p&gt;The glueballs lead to gluon and QCD monopole condensations as by-products of color confinement. A color dielectric function &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"&gt;\u0000 &lt;mi&gt;G&lt;/mi&gt;\u0000 &lt;mfenced open=\"(\" close=\")\"&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;∣&lt;/mo&gt;\u0000 &lt;mi&gt;ϕ&lt;/mi&gt;\u0000 &lt;mo&gt;∣&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/mfenced&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt; coupled with a Abelian gauge field is properly defined to mediate the glueball interactions at confining regime after spontaneous symmetry breaking (SSB) of the gauge symmetry. The particles are expected to form through the quark-gluon plasma (QGP) hadronization phase where the free quarks and gluons start clamping together to form hadrons. The QCD-like vacuum &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\"&gt;\u0000 &lt;mfenced open=\"〈\" close=\"〉\"&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msup&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;η&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msup&gt;\u0000 &lt;msubsup&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;m&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;η&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msubsup&gt;\u0000 &lt;msup&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;F&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;μ&lt;/mi&gt;\u0000 &lt;mi&gt;ν&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msup&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;F&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;μ&lt;/mi&gt;\u0000 &lt;mi&gt;ν&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/mfenced&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, confining potential &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M3\"&gt;\u0000 ","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43763247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Initial- and Final-State Temperatures of Emission Source from Differential Cross-Section in Squared Momentum Transfer in High-Energy Collisions","authors":"Qi Wang, Fu-Hu Liu, K. Olimov","doi":"10.1155/2021/6677885","DOIUrl":"https://doi.org/10.1155/2021/6677885","url":null,"abstract":"&lt;jats:p&gt;The differential cross-section in squared momentum transfer of &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M1\"&gt;\u0000 &lt;mi&gt;ρ&lt;/mi&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M2\"&gt;\u0000 &lt;msup&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;ρ&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msup&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M3\"&gt;\u0000 &lt;mi&gt;ω&lt;/mi&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M4\"&gt;\u0000 &lt;mi&gt;ϕ&lt;/mi&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M5\"&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;f&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mfenced open=\"(\" close=\")\"&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;980&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/mfenced&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M6\"&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;f&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mfenced open=\"(\" close=\")\"&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;1285&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/mfenced&gt;\u0000 &lt;/math&gt;\u0000 &lt;/jats:inline-formula&gt;, &lt;jats:inline-formula&gt;\u0000 &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\" id=\"M7\"&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;f&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mfenced open=\"(\" close=\")\"&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;1370&lt;/mn&gt;\u0000 ","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41451138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transverse Momentum and Pseudorapidity Spectrum of the Top Quark, Lepton, and \u0000 b\u0000 Jet in Proton-Proton Collisions at LHC","authors":"Li-Na Gao, E. Wang","doi":"10.1155/2021/6660669","DOIUrl":"https://doi.org/10.1155/2021/6660669","url":null,"abstract":"We study the transverse momentum and pseudorapidity spectrum of the top quark and their decay products, the system, and the total number of jets in proton-proton (pp) collisions at 13 TeV by using the Tsallis-Pareto-type function and the three-source Landau hydrodynamic model, respectively. The related parameters, such as the effective temperature of the interacting system ( ), the nonextensivity of the process ( ), and the width ( ) of pseudorapidity distribution, are extracted.","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":"2021 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64763461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cosmic Consequences of Kaniadakis and Generalized Tsallis Holographic Dark Energy Models in the Fractal Universe","authors":"A. Jawad, A. M. Sultan","doi":"10.1155/2021/5519028","DOIUrl":"https://doi.org/10.1155/2021/5519028","url":null,"abstract":"We investigate the recently proposed holographic dark energy models with the apparent horizon as the IR cutoff by assuming Kaniadakis and generalized Tsallis entropies in the fractal universe. The implications of these models are discussed for both the interacting (Γ = 3Hbρm) and noninteracting (b2 = 0) cases through different cosmological parameters. Accelerated expansion of the universe is justified for both models through deceleration parameter q. In this way, the equation of state parameter ωd describes the phantom and quintessence phases of the universe. However, the coincidence parameter ~r =Ωm/Ωd shows the dark energyand dark matter-dominated eras for different values of parameters. It is also mentioned here that the squared speed of sound gives the stability of the model except for the interacting case of the generalized Tsallis holographic dark energy model. It is mentioned here that the current dark energy models at the apparent horizon give consistent results with recent observations.","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":"2021 1","pages":"1-12"},"PeriodicalIF":1.7,"publicationDate":"2021-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49536239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expression of Concern on “Antigravity, an Answer to Nature’s Phenomena including the Expansion of the Universe”","authors":"Advances in","doi":"10.1155/2021/9380814","DOIUrl":"https://doi.org/10.1155/2021/9380814","url":null,"abstract":"<jats:p />","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2021-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44786828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feasibility Study of an Alcohol-Based Liquid Scintillation Detector and Its Application","authors":"B. Kim, J. Choi, K. Joo, Seon Yeong Park, Ye Sung Song, H. J. Woo","doi":"10.1155/2021/6672655","DOIUrl":"https://doi.org/10.1155/2021/6672655","url":null,"abstract":"This paper proposes a new base material, a mixture of alcohol and water, for liquid scintillators. A possibility of using alcohol as a new detection solution in a particle detector is described. A liquid scintillator is widely used in various fields because of its high light yield. In addition, it is very important to develop a stable liquid scintillator for particle detectors or other medical applications. To date, there have been no previous R&D studies elsewhere for the use of alcohol in particle detectors, and no market products are available of this type. Thus, there is a room for improvement. This paper describes the brief synthesizing process of the alcohol-based liquid scintillator by varying the mixing ratio of each component that makes up the liquid scintillator. The several feasible physical and optical properties of an alcohol-based liquid scintillator were investigated and presented. Finally, as one of its applications, a range (beam-path length) measurement using an electron beam in medical physics is introduced after irradiating an alcohol-based liquid scintillator with electron beam energies of 6~12 MeV. The measurement results were compared with a Monte Carlo simulation, Novalis Tx, a phantom, and a CT image. In the near future, the new alcohol-based liquid scintillator could be used for particle detector or medical imaging applications.","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":"2021 1","pages":"1-10"},"PeriodicalIF":1.7,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41682772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Electromagnetic Vacuum Origins of Dark Energy, Dark Matter, and Astrophysical Jets","authors":"S. Marongwe","doi":"10.1155/2021/5588662","DOIUrl":"https://doi.org/10.1155/2021/5588662","url":null,"abstract":"We use a semiclassical version of the Nexus paradigm of quantum gravity in which the quantum vacuum at large scales is dominated by the second quantized electromagnetic field to demonstrate that a virtual photon field can affect the geometric evolution of Einstein manifolds or Ricci solitons. This phenomenon offers a cogent explanation of the origins of astrophysical jets, the cosmological constant, and a means of detecting galactic dark matter.","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":"2021 1","pages":"1-8"},"PeriodicalIF":1.7,"publicationDate":"2021-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44030173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bound State Solution Schrödinger Equation for Extended Cornell Potential at Finite Temperature","authors":"A. Ahmadov, K. H. Abasova, M. Orucova","doi":"10.1155/2021/1861946","DOIUrl":"https://doi.org/10.1155/2021/1861946","url":null,"abstract":"In this paper, we study the finite temperature-dependent Schrödinger equation by using the Nikiforov-Uvarov method. We consider the sum of the Cornell, inverse quadratic, and harmonic-type potentials as the potential part of the radial Schrödinger equation. Analytical expressions for the energy eigenvalues and the radial wave function are presented. Application of the results for the heavy quarkonia and \u0000 \u0000 \u0000 \u0000 B\u0000 \u0000 \u0000 c\u0000 \u0000 \u0000 \u0000 meson masses are in good agreement with the current experimental data except for zero angular momentum quantum numbers. Numerical results for the temperature dependence indicates a different behaviour for different quantum numbers. Temperature-dependent results are in agreement with some QCD sum rule results from the ground states.","PeriodicalId":7498,"journal":{"name":"Advances in High Energy Physics","volume":"2021 1","pages":"1-13"},"PeriodicalIF":1.7,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46050530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}