arXiv - PHYS - High Energy Physics - Phenomenology最新文献_第3页

Probing dark-matter effects with gravitational waves using the parameterized post-Einsteinian framework 利用参数化后爱因斯坦框架用引力波探测暗物质效应

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-17 DOI: arxiv-2409.10846

Eileen Wilcox, David Nichols, Kent Yagi

{"title":"Probing dark-matter effects with gravitational waves using the parameterized post-Einsteinian framework","authors":"Eileen Wilcox, David Nichols, Kent Yagi","doi":"arxiv-2409.10846","DOIUrl":"https://doi.org/arxiv-2409.10846","url":null,"abstract":"A massive black hole can develop a dark-matter overdensity, and the dark\u0000matter changes the evolution of a stellar-mass compact object inspiraling\u0000around the massive black hole through the dense dark-matter environment.\u0000Specifically, dynamical friction speeds up the inspiral of the compact object\u0000and causes feedback on the dark-matter distribution. These intermediate\u0000mass-ratio inspirals with dark matter are a source of gravitational waves\u0000(GWs), and the waves can dephase significantly from an equivalent system in\u0000vacuum. Prior work has shown that this dephasing needs to be modeled to detect\u0000the GWs from these systems with LISA (the Laser Interferometer Space Antenna);\u0000it also showed that the density and distribution of dark matter can be inferred\u0000from a GW measurement. In this paper, we study whether the parametrized\u0000post-Einsteinian (ppE) framework can be used to infer the presence of dark\u0000matter in these systems. We confirm that if vacuum waveform templates are used\u0000to model the GWs from an inspiral in a dark-matter halo, then the resulting\u0000parameter estimation is biased. We then apply the ppE framework to determine\u0000whether it can reduce the parameter-estimation biases, and we find that adding\u0000one ppE phase term to a waveform template eliminates the parameter-estimation\u0000biases (statistical errors become larger than the systematic ones), but the\u0000effective post-Newtonian order in the ppE framework must be specified without\u0000uncertainties. When the post-Newtonian order has uncertainty, we find that the\u0000systematic errors on the ppE and the binary's parameters exceed the statistical\u0000errors. Thus, the simplest ppE framework would not give unbiased results for\u0000these systems, and a further extension of it, or dedicated parameter estimation\u0000with gravitational waveforms that include dark-matter effects would be needed.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258866","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}

引用次数: 0

Exploring Single-Flavor Dibaryons: A lattice perspective 探索单味二重子：晶格视角

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10167

Navdeep Singh Dhindsa, Nilmani Mathur, M. Padmanath

引用次数: 0

Status of tension between NO$ν$A and T2K after Neutrino 2024 and possible role of non-standard neutrino interactions 中微子 2024 之后 NO$ν$A 与 T2K 之间的紧张状态以及非标准中微子相互作用的可能作用

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10599

Sabya Sachi Chatterjee, Antonio Palazzo

{"title":"Status of tension between NO$ν$A and T2K after Neutrino 2024 and possible role of non-standard neutrino interactions","authors":"Sabya Sachi Chatterjee, Antonio Palazzo","doi":"arxiv-2409.10599","DOIUrl":"https://doi.org/arxiv-2409.10599","url":null,"abstract":"In a previous work we have shown that the data presented by the two\u0000long-baseline accelerator experiments NO$nu$A and T2K at the Neutrino 2020\u0000conference displayed a tension, and that it could be alleviated by non-standard\u0000neutrino interactions (NSI) of the flavor changing type involving the $e-mu$\u0000or the $e-tau$ sectors with couplings $|varepsilon_{emu}| sim\u0000|varepsilon_{etau}|sim 0.1$. As a consequence a hint in favor of NSI\u0000emerged. In the present paper we reassess the issue in light of the new data\u0000released by the two experiments at the Neutrino 2024 conference. We find that\u0000the tension in the determination of the standard CP-phase $delta_{mathrm\u0000{CP}}$ extracted by the two experiments in the normal neutrino mass ordering\u0000persists and has a statistical significance of $sim2sigma$. Concerning the\u0000NSI, we find that including their effects in the fit, the two values of\u0000$delta_{mathrm {CP}}$ preferred by NO$nu$A and T2K return in very good\u0000agreement. The current statistical significance of the hint of non zero NSI is\u0000$sim1.8sigma$. Further experimental data are needed in order to settle the\u0000issue.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258864","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}

引用次数: 0

SpectrAx: Spectral Search of Axion-Like Particles Using Multi-Band Observations of Galaxy Clusters from SKA, SO, CMB-S4 and eROSITA SpectrAx：利用SKA、SO、CMB-S4和eROSITA对星系团的多波段观测，对类轴粒子进行光谱搜索

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10632

Harsh Mehta, Suvodip Mukherjee

{"title":"SpectrAx: Spectral Search of Axion-Like Particles Using Multi-Band Observations of Galaxy Clusters from SKA, SO, CMB-S4 and eROSITA","authors":"Harsh Mehta, Suvodip Mukherjee","doi":"arxiv-2409.10632","DOIUrl":"https://doi.org/arxiv-2409.10632","url":null,"abstract":"The existence of axions or Axion-Like Particles (ALPs) has been predicted by\u0000various Beyond Standard Model (BSM) theories, and the proposed photon-ALP\u0000interaction is one of the ways to probe them. Such an interaction will lead to\u0000photon-ALP resonant conversion in galaxy clusters, resulting in a polarized\u0000spectral distortion in the CMB along the cluster line of sight. The estimation\u0000of this signal from galaxy clusters requires an estimation of the electron\u0000density and magnetic field in galaxy clusters. We have developed a new Bayesian\u0000framework texttt{SpectrAx} that can use observations from different\u0000electromagnetic bands such as radio, CMB, optical, and X-ray to infer the\u0000astrophysical properties of a galaxy cluster, such as cluster its redshift,\u0000electron density and magnetic field, along with the BSM physics such as ALPs.\u0000By using the simulated data for upcoming CMB surveys such as Simons Observatory\u0000(SO) and CMB-S4 in combination with Square Kilometer Array (SKA) and extended\u0000ROentgen Survey with an Imaging Telescope Array (eROSITA) we demonstrate the\u0000capability in accurately inferring the ALPs coupling strength along with the\u0000radial profile of electron density and magnetic field from galaxy clusters. The\u0000application of this framework to the data from future surveys by combining\u0000SKA+SO+eROSITA and SKA+CMB-S4+eROSITA will make it possible for the first time\u0000to explore both astrophysics and BSM physics from low-redshift galaxy clusters\u0000using a multi-band approach.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258984","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}

引用次数: 0

Improved $π^0,η,η^{prime}$ transition form factors in resonance chiral theory and their $a_μ^{rm{HLbL}}$ contribution 共振手性理论中改进的 $π^0,η,η^{prime}$ 过渡形式因子及其 $a_μ^{rm{HLbL}}$ 贡献

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10503

Emilio J. Estrada, Sergi Gonzàlez-Solís, Adolfo Guevara, Pablo Roig

{"title":"Improved $π^0,η,η^{prime}$ transition form factors in resonance chiral theory and their $a_μ^{rm{HLbL}}$ contribution","authors":"Emilio J. Estrada, Sergi Gonzàlez-Solís, Adolfo Guevara, Pablo Roig","doi":"arxiv-2409.10503","DOIUrl":"https://doi.org/arxiv-2409.10503","url":null,"abstract":"Working with Resonance Chiral Theory, within the two resonance multiplets\u0000saturation scheme, we satisfy leading (and some subleading) chiral and\u0000asymptotic QCD constraints and accurately fit simultaneously the\u0000$pi^{0},eta,eta^{prime}$ transition form factors, for single and double\u0000virtuality. In the latter case, we supplement the few available measurements\u0000with lattice data to ensure a faithful description. Mainly due to the new\u0000results for the doubly virtual case, we improve over existing descriptions for\u0000the $eta$ and $eta^prime$. Our evaluation of the corresponding pole\u0000contributions to the hadronic light-by-light piece of the muon $g-2$ read:\u0000$a_mu^{pi^{0}text{-}rm{pole}}=left(60.4pm0.5^{+3.2}_{-1.8}right)times10^{-11}$,\u0000$a_mu^{etatext{-}mathrm{pole}}=left(15.2pm0.5^{+1.1}_{-0.7}right)times10^{-11}$\u0000and\u0000$a_mu^{eta^primetext{-}rm{pole}}=left(14.4pm0.8^{+1.4}_{-1.0}right)times10^{-11}$,\u0000for a total of\u0000$a_mu^{pi^0+eta+eta^{prime}text{-}rm{pole}}=left(90.0pm1.1^{+3.7}_{-2.2}right)times10^{-11}$,\u0000where the first and second error are the statistical and systematic\u0000uncertainties, respectively.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258817","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}

引用次数: 0

Probing dimension-8 SMEFT operators through neutral meson mixing 通过中性介子混合探测八维 SMEFT 算子

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10305

Yi LiaoSouth China Normal U., Xiao-Dong MaSouth China Normal U., Hao-Lin WangSouth China Normal U.

{"title":"Probing dimension-8 SMEFT operators through neutral meson mixing","authors":"Yi LiaoSouth China Normal U., Xiao-Dong MaSouth China Normal U., Hao-Lin WangSouth China Normal U.","doi":"arxiv-2409.10305","DOIUrl":"https://doi.org/arxiv-2409.10305","url":null,"abstract":"We investigate the impact of effective interactions of dimension-8 (dim-8)\u0000operators in the standard model effective field theory (SMEFT) on neutral meson\u0000mixing, focusing on the $K^0-bar K^0$, $B_{d,s}-bar B_{d,s}$, and $D^0-bar\u0000D^0$ systems. Within the framework of the low energy effective field theory\u0000(LEFT), each system is governed by eight dim-6 operators, with four originating\u0000at tree level from dim-6 SMEFT operators and the other four from dim-8 SMEFT\u0000operators. Notably, in certain UV complete models those dim-8 operators instead\u0000of the dim-6 ones are generated at the leading order. Our analysis focuses on\u0000those dim-8 operators and includes their one-loop QCD renormalization group\u0000running effects. By leveraging the LEFT master formula we impose stringent\u0000constraints on the effective scales associated with these dim-8 operators. We\u0000find that neutral meson mixing can probe an effective scale up to 50 TeV for\u0000some operators, surpassing the constraints imposed on other dim-8 operators by\u0000other observables. Lastly, we present a UV complete model capable of generating\u0000dim-8 operators at the leading order, thus offering a unique perspective on the\u0000interplay between different operator dimensions in probing new physics\u0000phenomena.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258873","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}

引用次数: 0

Detection of Dark Matter Coherent Scattering via Torsion Balance with Test Bodies of Different Sizes 通过不同尺寸测试体的扭转平衡探测暗物质相干散射

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.09950

Shigeki Matsumoto, Jie Sheng, Chuan-Yang Xing

引用次数: 0

$J/ψ$ photoproduction near threshold and signals for the hidden charm pentaquarks 阈值附近的J/ψ$光生成和隐藏的粲五夸克信号

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10364

Ming-Xiao Duan, Chang Gong, Lin Qiu, Qiang Zhao

{"title":"$J/ψ$ photoproduction near threshold and signals for the hidden charm pentaquarks","authors":"Ming-Xiao Duan, Chang Gong, Lin Qiu, Qiang Zhao","doi":"arxiv-2409.10364","DOIUrl":"https://doi.org/arxiv-2409.10364","url":null,"abstract":"We study the $J/psi$ photoproduction $gamma pto J/psi p$ near threshold\u0000to investigate the role played by the open charm channels and possible signals\u0000from the hidden charm $P_c$ pentaquark states. With the diffractive mechanism\u0000described by a Pomeron exchange model extrapolated from high energies to the\u0000lower energy region, it shows that the differential cross sections compared\u0000with the recent results from the GlueX Collaboration have apparent deficits in\u0000the large scattering angles. The inclusion of the open charm channels and\u0000intermediate $P_c$ states can significantly improve the descriptions of the\u0000differential cross section data, in particular, at the energy regions of the\u0000$Lambda_cbar{D}^{(*)}$ thresholds. This can explain the structures observed\u0000by the GlueX Collaboration at the $Lambda_cbar{D}^{(*)}$ thresholds as the\u0000open charm CUSP effects. Given that these $P_c$ pentaquark states are hadronic\u0000molecules dynamically generated by the $Sigma_cbar{D}^{(*)}$, we find that\u0000the production of these $P_c$ states should be suppressed at leading order\u0000since their couplings to both $gamma p$ and $J/psi p$ are through loop\u0000transitions. This can explain why no obvious signals for the $P_c$ states are\u0000observed by the present datasets. In order to further disentangling the role\u0000played by $s$-channel mechanisms, we also investigate the polarized beam\u0000asymmetry which shows sensitivities to the open charm threshold effects and\u0000interferences from the $P_c$ productions. Experimental measurement of this\u0000observable at the Jefferson Laboratory is strongly encouraged.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258867","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}

引用次数: 0

Primordial black hole from domain wall fluctuations 来自域壁波动的原始黑洞

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.09986

Bo-Qiang Lu, Cheng-Wei Chiang, Tianjun Li

引用次数: 0

The higher $χ_{cJ}(nP)$, $h_c(nP)$ states and the role of the gluon-exchange potential 更高的 $χ_{cJ}(nP)$、$h_c(nP)$ 状态和胶子交换势的作用

arXiv - PHYS - High Energy Physics - Phenomenology Pub Date : 2024-09-16 DOI: arxiv-2409.10761

A. M. Badalian

{"title":"The higher $χ_{cJ}(nP)$, $h_c(nP)$ states and the role of the gluon-exchange potential","authors":"A. M. Badalian","doi":"arxiv-2409.10761","DOIUrl":"https://doi.org/arxiv-2409.10761","url":null,"abstract":"The masses, the fine-structure splitting, and two-photon decay widths of the\u0000higher $nP$-charmonium states are calculated in the relativistic string model,\u0000reduced to the spinless Salpeter equation, where the static potential has no\u0000fitting parameters and the $c-$quark mass has the physical value. The resulting\u0000masses of $h_c(3P)$, $chi_{c1}(3P)$, $chi_{c0}(4P)$, $chi_{c0}(5P)$,\u0000$chi_{c1}(5P)$ are obtained in a good agreement with the experimental masses\u0000of the LHCb resonances: $h_c(4300)$, $chi_{c1}(4274)$, $X(4500)$, $X(4700)$,\u0000$X(4685)$. To test sensitivity of results to a chosen gluon-exchange (GE)\u0000potential, three types of $V_{ge}(r)$ are considered. In first case the\u0000non-screened GE potential with large vector coupling at asymptotic,\u0000$alpha_{rm V}(rm asym.)=0.635$, and the $c$-quark mass $m_c=1.430$ GeV are\u0000taken; in second case a screened $V_{ge}$ and $m_c=1.385$ are investigated, and\u0000in third case the GE potential is totally suppressed, $V_{ge}=0$, and\u0000$m_c=1.32$ GeV. The agreement with experiment is reached only if the same\u0000(universal) flattened confining potential, introduced in the analysis of the\u0000radial Regge trajectories of light mesons, is used. The unobserved $6P,0^+$\u0000resonance with the mass $cong 4.81$ GeV, near $J/psiphi(1680)$ threshold, is\u0000predicted. Our analysis shows that the screening of the GE potential is\u0000possible but weakly affects the physical results obtained. The calculated\u0000two-photon decay widths weakly differ in the three cases but may become an\u0000important factor, which distinguishes $cbar c$ and four-quark states.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258811","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}

引用次数: 0