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SUMMARY:Bottom baryon mass and sigma term contribution
DTSTART;VALUE=DATE-TIME:20261011T084000Z
DTEND;VALUE=DATE-TIME:20261011T085500Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2834@indico.itp.ac.cn
DESCRIPTION:Speakers: 海洋 杜 (ITP\, CAS)\nUsing anisotropic clover act
 ion for valence bottom quark on CLQCD 2+1 flavor ensembles\,we present the
  accurately prediction of ground state spin-1/2 and spin-3/2 baryon masses
  containing bottom quark\,and extract sigma term contribution to bottom ha
 dron masses using Feynman-Hellman method.\n\nhttps://indico.itp.ac.cn/even
 t/437/contributions/2834/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2834/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Contributions of Electromagnetic Interaction to Hadron Masses
DTSTART;VALUE=DATE-TIME:20261011T082500Z
DTEND;VALUE=DATE-TIME:20261011T084000Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2837@indico.itp.ac.cn
DESCRIPTION:Speakers: 奕扬 刘 (ITP\, CAS)\nElectromagnetic effects are 
 increasingly relevant to precision hadron spectroscopy\, yet their evoluti
 on across the light\, strange\, charm\, and bottom sectors remains poorly 
 mapped. We calculate the leading QED corrections to meson and baryon masse
 s using electroquenched photons on nine 2+1-flavor\, tadpole-improved clov
 er ensembles at three lattice spacings\, with pion masses from 135 to 316 
 MeV and spatial extents from approximately 2.5 to 6.7 fm. The quark masses
  are matched in the Dashen scheme\, and the results are extrapolated joint
 ly to the physical pion mass\, continuum limit\, and infinite volume. Reso
 lving each mass shift into quark self-energy and pairwise interaction term
 s\, we find that attractive electromagnetic interactions lower hadron mass
 es\, whereas repulsive interactions raise them. Most neutral hadrons recei
 ve corrections below 1 MeV\, while singly charged states receive correctio
 ns of at most about 5 MeV.\n\nhttps://indico.itp.ac.cn/event/437/contribut
 ions/2837/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2837/
END:VEVENT
BEGIN:VEVENT
SUMMARY:基于梯度流的LQCD直接计算：胶子迹反常对重子质
 量的贡献
DTSTART;VALUE=DATE-TIME:20261011T081000Z
DTEND;VALUE=DATE-TIME:20261011T082500Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2819@indico.itp.ac.cn
DESCRIPTION:Speakers: 晨宇 章 (ITP)\n本工作在2+1味clover系综上
 用LQCD梯度流方法直接计算胶子迹反常对重子质量的贡献
 ，并匹配到MSbar方案。结果显示，胶子迹反常贡献显著且
 非平庸。且直接计算得到的_H与求和规则自洽\n\nhttps://ind
 ico.itp.ac.cn/event/437/contributions/2819/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2819/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Finite-Volume Gluon Trace-Anomaly Matrix Elements in the \\(\\rho\
 \)-Resonant \\(\\pi\\pi\\) Channel
DTSTART;VALUE=DATE-TIME:20261011T075500Z
DTEND;VALUE=DATE-TIME:20261011T081000Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2851@indico.itp.ac.cn
DESCRIPTION:Speakers: 啸岚 蒙 (ITP-CAS)\nUnderstanding how gluonic dyna
 mics manifests itself in unstable hadrons remains an important challenge i
 n studies of hadron mass generation. We investigate the gluon trace anomal
 y in the isovector \\(P\\)-wave \\(\\pi\\pi\\) channel containing the \\(\
 \rho\\) resonance using lattice QCD. A variational basis composed of quark
 -antiquark \\(\\rho\\) operators and two-pion operators projected onto the
  appropriate finite-volume irreducible representations is employed. Solvin
 g the generalized eigenvalue problem isolates a tower of interacting finit
 e-volume energy eigenstates. For each optimized state\, we calculate a vac
 uum-subtracted gluonic insertion proportional to \\(\\beta(g)F_{\\mu\\nu}F
 _{\\mu\\nu}/(2g)\\) and extract the corresponding diagonal matrix element 
 using the summed-ratio method. Away from the resonance region\, the matrix
  elements approximately follow the behavior expected for weakly interactin
 g two-pion states. Near the \\(\\rho\\) resonance\, however\, we observe a
  pronounced peak in the gluon trace-anomaly contribution\, correlated with
  the resonant behavior of the finite-volume spectrum and the changing \\(\
 \rho\\)- and \\(\\pi\\pi\\)-operator overlaps. The enhancement indicates t
 hat the gluonic response of the interacting two-pion system is significant
 ly stronger in the resonance region than the approximate sum of the indivi
 dual-pion contributions. Our results demonstrate that gluonic trace operat
 ors provide a sensitive probe of resonance formation and establish a frame
 work for studying the gluonic structure of unstable hadrons through finite
 -volume matrix elements.\n\nhttps://indico.itp.ac.cn/event/437/contributio
 ns/2851/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2851/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quark-Gluon Vertex under Complete Tensor Basis
DTSTART;VALUE=DATE-TIME:20261011T074000Z
DTEND;VALUE=DATE-TIME:20261011T075500Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2823@indico.itp.ac.cn
DESCRIPTION:Speakers: 力军 周 (Dalian University of Technology)\nThe qu
 ark gluon vertex is a fundamental quantity in unquenched QCD\, where as th
 e "classical" channel\, i.e. the spinor structure of $\\gamma_\\mu$ is rel
 ated to strong coupling constants $\\alpha_s$. Higher order loop correlati
 on would introduce other non-perturbative non-classical structures to the 
 3-pt correlation function of $\\left$. In this work\, we carried out compu
 tation under the complete tensor basis to see whether they are non-negligi
 ble or not.\n\nhttps://indico.itp.ac.cn/event/437/contributions/2823/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2823/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gradient-Flow Renormalization of Nonlocal Quasi Operators in Latti
 ce QCD
DTSTART;VALUE=DATE-TIME:20261011T072500Z
DTEND;VALUE=DATE-TIME:20261011T074000Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2847@indico.itp.ac.cn
DESCRIPTION:Speakers: 俊元 黄 ()\nLarge-momentum effective theory (LaME
 T) enables first-principles studies of hadron structure from spatially non
 local quasi observables\, for which renormalization is essential to connec
 t lattice calculations to continuum perturbative schemes. While the renorm
 alization of local operators has been extensively studied using methods su
 ch as RI/MOM and gradient flow\, nonlocal quasi operators containing space
 -like Wilson lines involve additional linear divergences and require dedic
 ated renormalization strategies. Conventional self-renormalization can pro
 perly remove these divergences\, but in practice the extraction of lattice
 -spacing-dependent renormalization factors is entangled with discretizatio
 n effects and typically relies on simultaneous analyses at multiple lattic
 e spacings. In this work\, we develop a gradient-flow-based renormalizatio
 n strategy for nonlocal quasi operators. The flow-dependent Wilson-line se
 lf energy is extracted from gauge-fixed Wilson lines and then applied as a
  common long-distance renormalization factor for different quasi matrix el
 ements. After subtracting the linear divergence\, the flowed operators are
  perturbatively matched to the \\(\\overline{\\mathrm{MS}}\\) scheme\, the
 reby separating the Wilson-line self-energy subtraction from the remaining
  lattice-spacing dependence. Gradient flow also improves the long-distance
  signal of Wilson-line observables while retaining a controlled field-theo
 retic interpretation. We implement the procedure on two CLQCD ensembles wi
 th different lattice spacings. The extracted self-energy correction shows 
 mild lattice-spacing dependence and yields well-behaved renormalized quasi
  matrix elements at large separations.\n\nhttps://indico.itp.ac.cn/event/4
 37/contributions/2847/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2847/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A new approach to the flowed quark field renormalization constant 
 $Z_\\chi$ using quark bilinears
DTSTART;VALUE=DATE-TIME:20261011T071000Z
DTEND;VALUE=DATE-TIME:20261011T072500Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2835@indico.itp.ac.cn
DESCRIPTION:Speakers: 美琪 高 (华南师范大学)\nThe field renormali
 zation constant of flowed quark fields\, denoted as $Z_\\chi$\, is a criti
 cal component in the non-perturbative renormalization of fermion operators
  within the gradient flow framework. While the conventional ``ringed'' sch
 eme based on the fermion kinetic term provides a theoretically robust defi
 nition\, its practical implementation on the lattice is hampered by signif
 icant statistical noise arising from disconnected contributions. In this w
 ork\, we propose a novel approach to determine $Z_\\chi$ using quark bilin
 ears. To validate our approach\, we use the extracted $Z_\\chi$ to reconst
 ruct the renormalized bilinear matrix elements $O^R$ for the pseudoscalar\
 , scalar\, axial-vector\, and tensor channels in the continuum limit.Our r
 esults demonstrate excellent consistency between the gradient flow and RI/
 MOM frameworks\, confirming that the bilinear-based $Z_\\chi$ provides a r
 eliable and computationally efficient alternative for high-precision latti
 ce QCD calculations.\n\nhttps://indico.itp.ac.cn/event/437/contributions/2
 835/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2835/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Determination of Standard Model Parameters From CLQCD Ensembles
DTSTART;VALUE=DATE-TIME:20261011T065000Z
DTEND;VALUE=DATE-TIME:20261011T071000Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2822@indico.itp.ac.cn
DESCRIPTION:Speakers: 孟初 蔡 (Institute of Theoretical Physics\, Chine
 se Academy of Sciences)\nLattice QCD provides a first-principles framework
  for studying the strong interactions and plays an important role in the p
 recision determination of Standard Model parameters. This talk will review
  the determination of renormalized light and heavy quark masses\, and disc
 uss how lattice QCD calculations of hadronic decay matrix elements enable 
 precise extractions of CKM matrix elements. Particular emphasis will be pl
 aced on recent results obtained with the CLQCD clover ensembles\, illustra
 ting their contributions to precision flavor physics and tests of the Stan
 dard Model.\n\nhttps://indico.itp.ac.cn/event/437/contributions/2822/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2822/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Continuous Renormalization Group Beta Function in Four-Flavor QCD
DTSTART;VALUE=DATE-TIME:20261011T063000Z
DTEND;VALUE=DATE-TIME:20261011T065000Z
DTSTAMP;VALUE=DATE-TIME:20261005T044636Z
UID:indico-contribution-647-2842@indico.itp.ac.cn
DESCRIPTION:Speakers: 雪莹 韩 (SJTU\, Uni. Siegen)\nThe renormalization
  group beta function encodes how the strength of the strong interaction ch
 anges with energy scale\, connecting asymptotic freedom at high energies t
 o the onset of nonperturbative dynamics at low energies. We study the beta
  function of four-flavor QCD using the continuous gradient-flow approach\,
  which provides a nonperturbative definition of the running coupling and i
 ts scale evolution. Our calculation follows the running from the perturbat
 ive regime toward stronger coupling\, with controlled continuum and infini
 te-volume extrapolations. This provides a first-principles view of the tra
 nsition between perturbative and nonperturbative QCD dynamics in a theory 
 with four dynamical sea-quark flavors.\n\nhttps://indico.itp.ac.cn/event/4
 37/contributions/2842/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2842/
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