2025粒子物理标准模型及新物理精细计算研讨会

28 Mar 2025, 10:00 → 1 Apr 2025, 18:00 Asia/Shanghai

                                  2025粒子物理标准模型及新物理精细计算研讨会会议通知

尊敬的各位专家、学者：

为促进国内同行间更好地交流合作，我们计划于2025年3月28日至4月1日在河北大学举办“2025粒子物理标准模型及新物理精细计算研讨会”，欢迎参会。会议由河北大学与重庆大学联合主办，河北大学承办。会议得到国家基金委理论物理专款“西南理论物理中心”项目资助。会议将围绕强与电弱相互作用的精细计算、超出标准模型的新物理、重味物理等方面的最新进展展开交流讨论，欢迎与会学者报告自己在上述方面的最新研究成果以及介绍国际上该领域的新进展。

会议时间：2025年3月28日至4月1日（28日报到，29-30号报告，31号自由讨论交流，1号离会）

报到地点：保定卓正国际酒店一楼大厅

会议统一安排食宿，费用自理。会议收取注册费1000元/人。

会议网站：https://indico.ihep.ac.cn/event/24626/，会议注册截止日期：2025年3月14日。

 

举办单位：    河北大学，重庆大学，西南理论物理中心，河北省物理学会

会议组委会：吴兴刚、秦思学、边立功、郭磊、郑绪昌、张生辉（重庆大学）

                        冯太傅、王国利、张海斌、展希杰、杨金磊、王亚乾、王波、张忻怿、张文星、胡畅（河北大学）       

会议联系人：张海斌（hbzhang@hbu.edu.cn）

                         展希杰（zhanxj@hbu.edu.cn）

                         杨金磊（jlyang@hbu.edu.cn）

Friday, 28 March

10:00 → 21:00 注册

Saturday, 29 March

08:00 → 08:30 欢迎致辞+合影

08:30 → 09:30 Chair：曹庆宏

08:30 轴子物理：理论探索与实验探测

Speaker: 佳 刘 (北京大学)

刘佳2025-03-29-JL-Baoding-Axion.pdf

08:50 Precision Calculations for Hard Exclusive Reactions: An Everlasting Beautiful Journey

Speaker: 玉明 王 (南开大学)

王玉明Radiative-B-meson-Decays.pdf

09:10 Complete computation of planar two-loop six-point massless integrals

We compute all planar two-loop six-point massless integrals via canonical differential equations. The integral basis with uniform transcendentality is determined via the D-dimensional upgrading of dual conformal integrals and the Baikov representation analysis. The analytic boundary values are determined and all planar two-loop six-point massless planar are calculated as iterative integrals. This is a milestone of Feynman integral computation, and paves the way for two-loop six-point amplitude studies and the NNLO four-final-state precision computations.

Speaker: 扬 张 (中国科学技术大学)

2025_precision_yang_zhang.pdf

09:30 → 09:50 茶歇

09:50 → 10:50 Chair：岳崇兴

09:50 Effective Field Theory from Scattering Amplitude View

Speaker: 江浩 于 (中国科学院理论物理研究所)

10:10 矢量Bc介子与全粲四夸克态衰变过程的极化分析

Speaker: 瑞林 朱 (南京师范大学)

朱瑞林 矢量Bc介子与全粲四夸克态衰变过程的极化分析.pdf

10:30 Exclusive quarkonium production in Z decays

Speaker: 绪昌 郑 (重庆大学)

ExclusiveQuarkonium_Zheng.pdf

10:50 → 11:10 茶歇

11:10 → 12:10 Chair：刘玉斌

11:10 Leptogenesis from symmetry non-restoration

In this talk, I will present a Leptogenesis scenario, which does not need primordial B-L asymmetry in the early Universe, and does not need the existence of right-handed neutrinos. In this case, the baryon asymmetry is generated by the requirement that the electron Yukawa interction enters thermal equilibrium after the quench of the electroweak sphaleron.

Speaker: 伟 晁 (北京师范大学)

chaoweiHeBEI.pdf

11:30 D介子单举衰变理论进展

Speaker: 溱 秦 (华中科技大学)

Inclusive_Qin.pdf

11:50 Higgs physics highlights at the LHC experiments

Speaker: 辰 周 (北京大学)

chenzhou_20250329.pdf

14:00 → 15:20 Chair：吴兴刚

14:00 重味夸克衰变的次次次领头阶微扰QCD修正

Speaker: 龙 陈 (山东大学)

2025_BaoDing_LongChen.pdf

14:20 轻赝标介子形状因子的微扰QCD计算进展

Speaker: 山 程 (湖南大学)

pionFFs-2025HBU_scheng.pdf

14:40 Bs meson decays to even-parity charmed mesons

Speaker: 志清 张 (河南工业大学)

2025粒子物理标准模型与新物理精细计算研讨会-张志清.pdf

15:00 Novel approach to probing top-philic resonances with boosted four-top tagging

We introduce a novel search strategy for heavy top-philic resonances that induce new contributions to four-top production at the LHC. We capitalize on recent advances in top-tagging performance to demonstrate that the final state, that is expected to be boosted based on current limits, can be fully reconstructed and exploited. Notably, our approach promises bounds on new physics cross sections that are a few to 60 times stronger than those obtained with existing searches showcasing its unprecedented effectiveness in probing top-philic new physics.

Speaker: Dr 浩林 李 (中山大学)

李浩林topphilic_Haolin.pdf

15:20 → 15:40 茶歇

15:40 → 16:40 Chair：李营

15:40 Search for Exotic Gauge Particles at the Future Colliders

The study of exotic gauge bosons beyond the Standard Model have always been of great interest. Future muon colliders will have a significant advantage in discovering exotic particles. We study the properties of $Z^\prime$ boson with the process of $\mu^+ \mu^- \rightarrow q \bar{q}$, $\mu^+ \mu^- \rightarrow l^+ l^-$, $\mu^+ \mu^- \rightarrow Z H$ and $\mu^+ \mu^- \rightarrow W^+ W^-$. Through studying the $\mu^+ \mu^- \to W^{\prime +} W^{\prime -} \to e^+ e^- n_e \bar{n}_e$ process, we explore the properties of $W^\prime$ in the alternative left-right model as well.

Speaker: 洪蕾 李 (济南大学)

16:00 2HDMS中的有限温自发CP破坏和重子不对称

Speaker: 磊 王 (烟台大学)

王磊-保定.pdf

16:20 celestial massive amplitudes

Here we discuss the 3pt celestial amplitude of two massive scalars and one massless scalar. In the massless limit $m\to 0$ for one of the massive scalars, the gamma function $\Gamma(1-\Delta)$ appears. By requiring the resulting amplitude to be well-defined, that is it goes to the 3pt amplitude of arXiv:2312.08597, the scaling dimension of this massive scalar has to be conformally soft $\Delta \to 1$. The pole $1/(1-\Delta)$ coming from $\Gamma(1-\Delta)$ is crucial for this massless limit. Without it the resulting amplitude would be zero. The phase factors in the massless limit of massive conformal primary wave functions, discussed in arXiv:1705.01027, plays an import and consistent role in the celestial massive amplitudes. Furthermore, the subleading orders $m^{2n}$ can also contribute poles when the scaling dimension is analytically continued to $\Delta=1-n$ or $\Delta = 2$. This consistent massless limit only exists for dimensions belonging to the generalized conformal primary operators $\Delta \in 2-\mathbb{Z}_{\geq 0}$ of massless bosons.

Speaker: 炜 樊 (江苏科技大学)

樊炜-celestial+massive+amplitude (3).pdf

16:40 → 17:00 茶歇

17:00 → 18:30 Chair：王玉明

17:00 New version of NeatIBP: a novel tool for Feynman integral computation

The integration-by-parts (IBP) reduction is one of the bottleneck steps in the evaluation of multi-loop Feynman integrals. NeatIBP is a program based on the syzygy method for IBP reduction. It generates much smaller IBP systems compared to traditional Laporta's algorithm, which helps reduce the computation cost of IBP reduction. In this talk, I will present the new version of NeatIBP. It is with multiple useful new features. These features include: the automated interface with the popular Feynman integral reduction software Kira, the implementation of IBP reduction using the idea of spanning cuts, the algorithm of syzygy vector simplification, and more. I will also introduce some recent works in amplitude computation that is supported by NeatIBP.

Speaker: 子昊 吴 (国科大杭州高等研究院)

NeatIBP.pdf

NeatIBP.pptx

17:15 An Analytic Computation of Three-Loop Five-Point Feynman Integrals

We evaluate the three-loop five-point pentagon-box-box massless integral family in the dimensional regularization scheme, via canonical differential equation. We use tools from computational algebraic geometry to enable the necessary integral reductions. The boundary values of the differential equation are determined analytically in the Euclidean region. To express the final result, we introduce a new representation of weight six functions in terms of one-fold integrals over the product of weight-three functions with weight-two kernels that are derived from the differential equation. Our work paves the way to the analytic computation of three-loop multi-leg Feynman integrals.

Speaker: Mr 涌群 徐 (中国科学技术大学)

Hebei-3L5P.pdf

17:30 Next-to-next-to-leading order threshold soft function for tW production

Speaker: 家乐 丁 (山东大学)

丁家乐soft+function_JLDing.pptx

17:45 Heavy meson DA from LQCD

Speaker: 浩飞 高 (上海交通大学)

Heavy meson LCDAs from LQCD .pptx

18:00 基于 QCD 因子化方案 B → ππ 中色八重态的贡献

Speaker: 冰冰 杨 (河南师范大学)

杨冰冰.pdf

18:15 Categorizing representations of scalar SU(3)_f mesons by decays

The scalar mesons are established for a long time, but their nature is still an open question. In this paper, we investigate the potential of categorizing their $SU(3)_f$ representations via $J/\psi \to SV $and $\gamma S$, offering a criterion that may illuminate this issue. Here, $S (V)$ denotes scalar (vector) mesons. Using the $SU(3)_f$ symmetry with the current data, we find that $f_0(500)$ and $f_0(980)$ are mostly made of singlet and octet $SU(3)_f$ representations, respectively, with the singlet-octet mixing angle of $\theta=(82.9\pm 4.4)^{\circ}$. This conclusion is consistent with the caculations of the quark-antiquark ($q\bar{q}$) hypothesis. For the scalar mesons in the range of 1-2 GeV, we discuss the mixings between qq¯ and glueballs. Our numerical results suggest that $f_0(1710)$ is likely composed of the scalar glueball. We urge our experimental colleagues to measure $J/\psi \to \rho a_0(980, 1450, 1710), K^∗(892)^{\pm} K^∗(700, 1430, 1950)^{\mp}$ and $\omega f_0(500)$, which provide useful information in the SU(3)f analysis.

Speaker: 晓 喻 (国科大杭州高等研究院)

喻晓.pdf

Sunday, 30 March

08:00 → 09:20 Chair：王建雄

08:00 Analytic decay width of the Higgs boson to massive bottom quarks at order alpha_s^3

Speaker: 烨凡 王 (南京师范大学)

Hbb_als3_Wang.pdf

08:20 Loop corrections to tW production

Speaker: 海涛 李 (山东大学)

tW-loops.pdf

08:40 Analytic results for Some types of Feyanman integrals at any loop order

Speaker: 龙斌 陈 (广州大学)

09:00 Precision Gravitational Inspiral Dynamics from Feynman Integrals

Speaker: 正文 刘 (东南大学)

Baoding2025-Liu.pdf

09:20 → 09:40 茶歇

09:40 → 11:00 Chair：杨茂志

09:40 利用QCD求和规则研究五夸克态

Speaker: 志刚 王 (华北电力大学)

王志刚2025-Hebei(WZG).pdf

10:00 模味道框架下解决超对称mu问题及相关的模场稳定机制

Speaker: 飞 王 (郑州大学)

10:20 Master integrals for two-loop gg->HH induced by light quark

Speaker: 正宏 胡 (中国科学院高能物理研究所)

The gg-HH amplitude induced by bottom.pdf

10:40 Long-lived heavy neutral leptons from axionlike particles at the LHC and Belle II

In hidden-sector models, axion-like particles (ALPs) can couple to heavy neutral
leptons (HNLs), leading to rich phenomenologies. We study ALPs produced from D- and B-meson decays via quark-favor-violating couplings, and decaying exclusively into a pair of HNLs which mix with active neutrinos. The ALP can be either short- or long-lived, depending on the masses of the ALP and the HNL, as well as the corresponding coupling strength. Such GeV-scale HNLs are necessarily long-lived given the current bounds on their mixing parameters. We assess the sensitivities of the LHC far detectors, SHiP, and Belle II, to the long-lived HNLs in such theoretical scenarios. We fnd that for currently allowed values of the ALP couplings, most of the LHC experiments can probe the active-sterile-neutrino mixing parameters multiple orders of magnitude beyond the present bounds, covering large parameter region targeted with the type-I seesaw mechanism, while the Belle II experiment can test the mixing parameters up to two orders of magnitude below the existing limits.

Speaker: 泽人 王 (合肥工业大学)

alp_hnl.pdf

11:00 → 11:20 茶歇

11:20 → 12:20 Chair：毕效军

11:20 The Effects of Early Kinetic Decoupling on the Dark Matter Relic Density

Speaker: 学文 刘 (烟台大学)

EKD-BD-250330-XWL.pdf

11:40 非弹性暗物质模型的多手段协同探测

Speaker: 致廷 卢 (南京师范大学)

卢致廷_InelasticDM_2025粒子物理精细计算研讨会.pdf

12:00 Synergies in the Searches for Neutrino NSIs and Dark Matter

Speaker: 刚 李 (中山大学)

Hebei_NSI-DM_Gang_Li.pdf

14:00 → 15:00 Chair：司宗国

14:00 Next-to-leading order QCD corrections to Bc* → J/ψ form factors

Within the framework of Non-Relativistic Quantum Chromodynamics (NRQCD) factorization,
we calculate the next-to-leading order (NLO) perturbative QCD corrections to the form factors for
the semileptonic decays of Bc into J/ψ via (axial-)vector and (axial-)tensor currents. We obtain the
complete analytical results for the form factors up to NLO, and provide their asymptotic expressions
in the hierarchical heavy quark limit. The NLO corrections are found to be both significant and
convergent in the relatively small squared transfer momentum （q2）region, while also reducing the
dependence on the renormalization scale µ. Finally, the theoretical predictions for Bc → J/ψ form
factors over the full q2 range are provided.

Speaker: Dr 伟 陶 (河南师范大学)

河北保定报告-陶伟.pdf

14:20 b→c transition form factors in the perturbative QCD approach

Speaker: 芝田 邹 (烟台大学)

2025-保定-Λb→Λc Form Factor in PQCD.pptx

14:40 QCD corrections of e^+ e^- to J/psi + c + cbar using the principle of maximum conformality

Speaker: 旭东 黄 (重庆师范大学)

Jpsiccbar.pptx

15:00 → 15:20 茶歇

15:20 → 16:20 Chair：马滟青

15:20 双粲和全粲四夸克态在高能对撞机上间接产生机制的研究

X（3872），作为四夸克的候选者，其产生和衰变等性质被实验和理论广泛研究。我们在NRQCD框架下，通过Higgs和弱玻色子衰变研究了双粲紧致四夸克态的间接产生机制，并分别在LHC和CEPC上预言了其分支比和产生率等。基于共线因子化，利用两种碎裂函数方法，我们对全粲四夸克态的间接产生性质也进行了深入的研究。通过此报告将详细介绍近期我们关于四夸克态间接产生的理论研究工作。

Speaker: Dr 鸿浩 马 (广西师范大学)

NRQCD_四夸克态_河北大学.pptx

15:40 Unified interpretation of the muon g − 2 anomaly and 95 GeV excesses in the general next-to-minimal supersymmetric standard model

We investigate three intriguing anomalies within the framework of the general next-to-minimal supersymmetric standard model. These anomalies include a significant deviation of the experimental results for the muon anomalous magnetic moment from its standard model prediction, with a confidence level of 5.1σ; a joint observation by the CMS and ATLAS Collaborations of a diphoton excess with a local significance of 3.1σ in the invariant mass distribution around 95.4 GeV; and a reported excess in the bb ̄ production at the Large Electron-Positron Collider with a local significance of 2.3σ. Through analytical and numerical analyses, we provide unified interpretations across an extensive parameter space that remain consistent with current experimental restrictions from data on the Higgs boson at 125 GeV, B-physics measurements, and dark matter observables, as well as existing searches for supersymmetry and extra Higgs bosons. We attribute the muon anomaly to loops involving muon-smuon-neutralino and muon- sneutrino-chargino interactions, while attributing the diphoton and bb ̄ excesses to the resonant production of a singlet-dominated scalar. These proposed solutions are poised for experimental tests at the high- luminosity LHC and future linear colliders.

Speaker: 经伟 连 (河南科技学院 and 河南师范大学)

2025保定-连经纬.pdf

16:00 Footprints of vector-like quark models

Vector-like quarks (VLQs) are ubiquitous in many new physics models, such as grand unified theory, composite Higgs models, extra dimension theory, and so on. In minimal VLQ models, only seven types of representations can induce the mixing with standard model quarks. In non-minimal VLQ models, we can also introduce new scalar fields. The VLQ models can lead to rich phenomenology in electroweak precision observables, Higgs physics, flavour physics. In this talk, we will summarize our previous studies on the STU parameters, Higgs physics, and muon g-2 in the VLQ extended models.

Speaker: Dr 世平 和 (太原理工大学)

VLQ phenomenology.pdf

16:20 → 16:40 茶歇

16:40 → 18:10 Chair：朱瑞林

16:40 Probing the couplings of axion-like particle with leptons at future e^+e^− and e^−p colliders

Speaker: 欣洋 李 (辽宁师范大学)

Probing the couplings of axion-like particle with leptons at future e^+e^− and e^−p colliders.pptx

16:55 Tree-level soft emission for two pairs of quarks

Speaker: 信光 陈 (中国科学技术大学)

Tree-level soft emission for two pairs of quarks.pdf

17:10 Asymptotic grand unification in SO(10) with one extra dimension

Speaker: 高祥 方 (国科大杭州高等研究院)

方高祥_aSO10.pdf

17:25 Gravitational Waves of GUT Phase Transition during Inflation

Speaker: 禧贺 胡 (国科大杭州高等研究院)

胡禧贺_河北_2024.3.30.pdf

17:40 An explicit parameterization of minimal seesaw model

Speaker: 子强 陈 (国科大杭州高等研究院)

陈子强ziqiang_Pre+3.28.pdf

17:55 B介子三体含粲半轻衰变的QED非因子化修正

Speaker: 佳芝 李 (河南师范大学)

李佳芝.pdf

Monday, 31 March

09:00 → 18:00 自由讨论

Tuesday, 1 April

09:00 → 18:00 离会