|
1.
|
|
|
The hadronic vacuum polarization contribution to the muon $g-2$ at long distances
/ Djukanovic, Dalibor (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; von Hippel, Georg (U. Mainz, PRISMA) ; Kuberski, Simon (CERN) ; Meyer, Harvey B. (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA) ; Miller, Nolan (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Parrino, Julian (U. Mainz, PRISMA) ; Risch, Andreas (Wuppertal U.) ; Wittig, Hartmut (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA)
We present our lattice QCD result for the long-distance part of the hadronic vacuum polarization contribution, $(a_\mu^{\rm hvp})^{\rm LD}$, to the muon $g-2$ in the time-momentum representation. [...]
CERN-TH-2024-196 ; MITP-24-080 ; arXiv:2411.07969.
-
55.
Fulltext
|
|
|
2.
|
Hadronic vacuum polarization in the muon $g-2$: The short-distance contribution from lattice QCD
/ Kuberski, Simon (CERN) ; Cè, Marco (INFN, Milan Bicocca) ; von Hippel, Georg (U. Mainz, PRISMA) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Risch, Andreas (Wuppertal U. ; NIC, Zeuthen ; DESY, Zeuthen) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI)
We present results for the short-distance window observable of the hadronic vacuum polarization contribution to the muon $g-2$, computed via the time-momentum representation (TMR) in lattice QCD. A key novelty of our calculation is the reduction of discretization effects by a suitable subtraction applied to the TMR kernel function, which cancels the leading $x_0^4$-behaviour at short distances. [...]
arXiv:2401.11895; MITP-24-011; CERN-TH-2024-011.-
2024-03-29 - 37 p.
- Published in : JHEP 2403 (2024) 172
Fulltext: 2401.11895 - PDF; document - PDF;
|
|
|
3.
|
Hadronic light-by-light contribution to $(g-2)_\mu$ from lattice QCD: a complete calculation
/ Chao, En-Hung (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Hudspith, Renwick J (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Gérardin, Antoine (Aix-Marseille U.) ; Green, Jeremy R (CERN) ; Meyer, Harvey B (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys. ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.)
The tension between the theoretical prediction and the experimental result of the anomalous magnetic moment of the muon, $a_\mu\equiv(g-2)_\mu/2$, is one of the long-standing puzzles of modern particle physics. After the update of the Fermilab E989 experiment in April 2021, the discrepancy between theory and experiment lies at the 4.2-sigma level. [...]
MITP-21-050.-
2022 - 10 p.
- Published in : PoS LATTICE2021 (2022) 209
Fulltext: PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.209
|
|
|
4.
|
HVP contribution to Running Coupling and Electroweak Precision Science
/ Miura, Kohtaroh (Helmholtz Inst., Mainz ; Darmstadt, GSI ; KMI, Nagoya) ; Cè, Marco (CERN) ; Gérardin, Antoine (Aix-Marseille U.) ; von Hippel, Georg (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Meyer, Harvey B (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Ottnad, Konstantin (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Risch, Andreas (NIC, Zeuthen) ; San Jose, Teseo (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Wilhelm, Jonas (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys. ; CERN) ; Wittig, Hartmut (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys. ; CERN)
We investigate the impact of the latest Mainz/CLS collaboration’s result for the hadronic vacuum polarization (HVP) on the electroweak (EW) precision science. The subject is closely related to the muon g-2 via the HVP. [...]
2022 - 9 p.
- Published in : PoS LATTICE2021 (2022) 342
Fulltext: PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.342
|
|
|
5.
|
Window observable for the hadronic vacuum polarization contribution to the muon $g-2$ from lattice QCD
/ Cè, Marco (U. Bern, AEC ; CERN) ; Gérardin, Antoine (Marseille, CPT) ; von Hippel, Georg (U. Mainz, PRISMA) ; Hudspith, Renwick J. (Helmholtz Inst., Mainz) ; Kuberski, Simon (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz) ; Miura, Kohtaroh (Helmholtz Inst., Mainz ; Nagoya U. (main)) ; Mohler, Daniel (Darmstadt, GSI ; Darmstadt, Tech. U.) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Paul Srijit (U. Mainz, PRISMA) et al.
Euclidean time windows in the integral representation of the hadronic vacuum polarization contribution to the muon $g-2$ serve to test the consistency of lattice calculations and may help in tracing the origins of a potential tension between lattice and data-driven evaluations. In this paper, we present results for the intermediate time window observable computed using O($a$) improved Wilson fermions at six values of the lattice spacings below 0.1 fm and pion masses down to the physical value. [...]
arXiv:2206.06582; MITP-22-038; CERN-TH-2022-098; DESY-22-105.-
2022-12-01 - 43 p.
- Published in : Phys. Rev. D 106 (2022) 114502
Fulltext: Publication - PDF; 2206.06582 - PDF;
|
|
|
6.
|
Photon emissivity of the quark-gluon plasma: a lattice QCD analysis of the transverse channel
/ Cè, Marco (U. Bern, AEC ; Bern U. ; CERN) ; Harris, Tim (Edinburgh U.) ; Krasniqi, Ardit (U. Mainz, PRISMA) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Török, Csaba (U. Mainz, PRISMA)
We present results for the thermal photon emissivity of the quark-gluon plasma derived from spatially transverse vector correlators computed in lattice QCD at a temperature of 250 MeV. The analysis of the spectral functions, performed at fixed spatial momentum, is based on continuum-extrapolated correlators obtained with two flavours of dynamical Wilson fermions. [...]
arXiv:2205.02821; MITP-22-032; CERN-TH-2022-070.-
2022-09-01 - 26 p.
- Published in : Phys. Rev. D 106 (2022) 054501
Fulltext: PDF;
|
|
|
7.
|
The hadronic running of the electromagnetic coupling and the electroweak mixing angle from lattice QCD
/ Cè, Marco (U. Bern, AEC ; CERN) ; Gérardin, Antoine (Marseille, CPT) ; von Hippel, Georg (U. Mainz, PRISMA) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Miura, Kohtaroh (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI ; KMI, Nagoya) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Risch, Andreas (DESY, Zeuthen) ; San José, Teseo (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Wilhelm, Jonas (U. Mainz, PRISMA) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI ; CERN)
We compute the hadronic running of the electromagnetic and weak couplings in lattice QCD with $N_{\mathrm{f}}=2+1$ flavors of $\mathcal{O}(a)$ improved Wilson fermions. Using two different discretizations of the vector current, we compute the quark-connected and -disconnected contributions to the hadronic vacuum polarization (HVP) functions $\bar{\Pi}^{\gamma\gamma}$ and $\bar{\Pi}^{\gamma Z}$ for Euclidean squared momenta $Q^2\leq 7\,\mathrm{GeV}^2$. [...]
arXiv:2203.08676; MITP-22-019; CERN-TH-2022-035; DESY-22-050.-
2022-08-22 - 63 p.
Fulltext: 2203.08676 - PDF; document - PDF;
|
|
|
8.
|
Estimating the thermal photon production rate using lattice QCD
/ Török, Csaba (U. Mainz, PRISMA) ; Cè, Marco (CERN) ; Harris, Tim (Edinburgh U.) ; Krasniqi, Ardit (U. Mainz, PRISMA) ; Toniato, Arianna (U. Mainz, PRISMA) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI)
We present results for the photon emission rate determined from the transverse channel vector correlator at fixed spatial momentum using two flavors of dynamical Wilson fermions at $T\sim$250 MeV. We estimate the transverse channel spectral function using the continuum extrapolated correlator by applying various fit ansätze with a smooth matching to the NLO perturbative result. [...]
arXiv:2112.00563; CERN-TH-2021-171.-
2021 - 9 p.
- Published in : PoS LATTICE2021 (2021) 172
Fulltext: document - PDF; 2112.00563 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.172
|
|
|
9.
|
Deep inelastic scattering off quark-gluon plasma and its photon emissivity
/ Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Cè, Marco (CERN) ; Harris, Tim (Edinburgh U.) ; Toniato, Arianna (U. Mainz, PRISMA) ; Török, Csaba (U. Mainz, PRISMA)
The photon emissivity of quark-gluon plasma probes the interactions in the medium and differs qualitatively between a weakly coupled and a strongly coupled plasma in the soft-photon regime. The photon emissivity is given by the product of kinematic factors and a spectral function associated with the two-point correlator of the electromagnetic current at lightlike kinematics. [...]
arXiv:2112.00450; CERN-TH-2021-167.-
2022-05-16 - 8 p.
- Published in : PoS LATTICE2021 (2022) 269
Fulltext: document - PDF; 2112.00450 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.269
|
|
|
10.
|
Vacuum correlators at short distances from lattice QCD
/ Harris, Tim (Edinburgh U.) ; Cè, Marco (CERN) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys. ; Darmstadt, GSI) ; Toniato, Arianna (U. Mainz, PRISMA) ; Török, Csaba (U. Mainz, PRISMA)
We propose a method to help control cutoff effects in the short-distance contribution to integrated correlation functions, such as the hadronic vacuum polarization (HVP), using the corresponding screening correlators computed at finite temperature. The strategy is investigated with Wilson fermions at leading order, which reveals a logarithmically-enhanced lattice artifact in the short-distance contribution, whose coefficient is determined at this order. [...]
arXiv:2111.07948; CERN-TH-2021-189.-
2022-05-16 - 9 p.
- Published in : PoS: LATTICE2021 (2021) , pp. 572
Fulltext: document - PDF; 2111.07948 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.572
|
|