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1.
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Isospin-breaking corrections to the muon magnetic anomaly in Lattice QCD
/ Giusti, Davide (Rome III U. ; INFN, Rome3) ; Lubicz, Vittorio (Rome III U. ; INFN, Rome3) ; Martinelli, Guido (Rome U.) ; Sanfilippo, Francesco (INFN, Rome3) ; Simula, Silvano (INFN, Rome3)
In this contribution we present a lattice calculation of the leading-order electromagnetic and strong isospin-breaking (IB) corrections to the quark-connected hadronic-vacuum-polarization (HVP) contribution to the anomalous magnetic moment of the muon. The results are obtained adopting the RM123 approach in the quenched-QED approximation and using the QCD gauge configurations generated by the ETM Collaboration with $N_f = 2+1+1$ dynamical quarks, at three values of the lattice spacing ($a \simeq 0.062, 0.082, 0.089$ fm), at several lattice volumes and with pion masses between $\simeq 210$ and $\simeq 450$ MeV. [...]
arXiv:1909.01962.-
SISSA, 2019-09-04 - 11 p.
- Published in : PoS CD2018 (2019) 063
Fulltext: PDF; Fulltext from publisher: PDF;
In : 9th International Workshop on Chiral Dynamics, Durham, NC, USA, 17 - 21 Sep 2018, pp.063
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2.
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Non-perturbative renormalization in QCD+QED and its applications to weak decays
/ Di Carlo, Matteo (Rome U. ; INFN, Rome) ; Martinelli, Guido (Rome U. ; INFN, Rome) ; Giusti, Davide (Rome III U. ; INFM, Trieste) ; Lubicz, Vittorio (Rome III U. ; INFN, Rome3) ; Sachrajda, Christopher T. (Southampton U.) ; Sanfilippo, Francesco (INFN, Rome3) ; Simula, Silvano (INFN, Rome3) ; Tantalo, Nazario (Rome U., Tor Vergata ; INFN, Rome2)
We present a novel strategy to renormalize lattice operators in QCD+QED, including first order QED corrections to the non-perturbative evaluation of QCD renormalization constants. Our procedure takes systematically into account the mixed non-factorizable QCD+QED effects which were neglected in previous calculations, thus significantly reducing the systematic uncertainty on renormalization corrections. [...]
arXiv:1911.00938.-
SISSA, 2019-11-05 - 7 p.
- Published in : PoS LATTICE2019 (2019) 196
Fulltext: PDF; Fulltext from publisher: PDF;
In : 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 16 - 22 Jun 2019, pp.196
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3.
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Radiative corrections to semileptonic decay rates
/ Sachrajda, C.T. (Southampton U.) ; Di Carlo, Matteo (Rome U. ; INFN, Rome) ; Martinelli, Guido (Rome U. ; INFN, Rome) ; Giusti, Davide (Rome III U. ; INFN, Rome3) ; Lubicz, Vittorio (Rome III U. ; INFN, Rome3) ; Sanfilippo, Francesco (INFN, Rome3) ; Simula, Silvano (INFN, Rome3) ; Tantalo, Nazario (Rome U., Tor Vergata ; INFN, Rome2)
We discuss the theoretical framework required for the computation of radiative corrections to semileptonic decay rates in lattice simulations, and in particular to those for $K_{\ell3}$ decays. This is an extension of the framework we have developed and successfully implemented for leptonic decays. [...]
arXiv:1910.07342.-
SISSA, 2019-10-16 - 7 p.
- Published in : PoS LATTICE2019 (2019) 162
Fulltext: PDF; Fulltext from publisher: PDF;
In : 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 16 - 22 Jun 2019, pp.162
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4.
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HVP contribution of the light quarks to the muon $(g - 2)$ including isospin-breaking corrections with Twisted-Mass fermions
/ Giusti, Davide (Rome III U. ; INFN, Rome3) ; Lubicz, Vittorio (Rome III U. ; INFN, Rome3) ; Martinelli, Guido (Rome U. ; INFN, Rome) ; Sanfilippo, Francesco (INFN, Rome3) ; Simula, Silvano (INFN, Rome3) ; Tarantino, Cecilia (Rome III U. ; INFN, Rome3)
We present a preliminary lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the Hadronic Vacuum Polarization (HVP) contribution of the light quarks to the anomalous magnetic moment of the muon. The results are obtained in the quenched-$QED$ approximation using the $QCD$ gauge configurations generated by the European Twisted Mass Collaboration (ETMC) with $N_f = 2 + 1 + 1$ dynamical quarks, at three values of the lattice spacing varying from $0.089$ to $0.062 ~ \mbox{fm}$, at several lattice volumes and with pion masses in the range $M_\pi \simeq 220 \div 490 ~ \mbox{MeV}$..
arXiv:1810.05880.-
SISSA, 2019-05-29 - 7 p.
- Published in : PoS LATTICE2018 (2018) 140
Fulltext: PoS(LATTICE2018)140 - PDF; 1810.05880 - PDF;
In : 36th International Symposium on Lattice Field Theory, East Lansing, MI, USA, 22 - 28 Jul 2018, pp.140
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5.
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6.
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Charm physics with physical light and strange quarks using domain wall fermions
/ Jüttner, Andreas (Southampton U.) ; Del Debbio, Luigi (Edinburgh U.) ; Garron, Nicolas (Cambridge U., DAMTP) ; Khamseh, Ava (Edinburgh U.) ; Marinkovic, Marina (Southampton U. ; CERN) ; Sanfilippo, Francesco (Southampton U.) ; Tsang, Justus Tobias (Southampton U.) ; Boyle, Peter A. (Edinburgh U.)
We present a study of charm physics using RBC/UKQCD 2+1 flavour physical point domain wall fermion ensembles for the light quarks as well as for the valence charm quark. After a brief motivation of domain wall fermions as a suitable heavy quark discretisation we will show first results for masses and matrix elements..
arXiv:1502.00845.-
SISSA, 2015-01-25 - 7 p.
- Published in : PoS: LATTICE2014 (2015) , pp. 380
Fulltext: PDF; Published version from PoS: PDF; External link: PoS server
In : 32nd International Symposium on Lattice Field Theory, Columbia U., New York, NY, USA, 23 - 28 Jun 2014, pp.380
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7.
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Charm physics with Moebius Domain Wall Fermions
/ Tsang, Justus Tobias (Southampton U.) ; Jüttner, Andreas (Southampton U.) ; Sanfilippo, Francesco (Southampton U.) ; Boyle, Peter (Edinburgh U.) ; Marinkovic, Marina (Southampton U. ; CERN) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba) ; Cho, Yong-Gwi (Tsukuba U., GSPAS)
We present results showing that Domain Wall fermions are a suitable discretisation for the simulation of heavy quarks. This is done by a continuum scaling study of charm quarks in a M\"obius Domain Wall formalism using a quenched set-up. [...]
arXiv:1501.00660.-
SISSA, 2014-12-18 - 7 p.
- Published in : PoS LATTICE2014 (2014) 379
Fulltext: arXiv:1501.00660 - PDF; LATTICE2014_379 - PDF; External link: Preprint
In : 32nd International Symposium on Lattice Field Theory, Columbia U., New York, NY, USA, 23 - 28 Jun 2014, pp.379
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8.
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The chiral phase transition in two-flavor QCD from imaginary chemical potential
/ Bonati, Claudio (INFN, Pisa ; Pisa U.) ; de Forcrand, Philippe (CERN ; Zurich, ETH) ; D'Elia, Massimo (INFN, Pisa ; Pisa U.) ; Philipsen, Owe (Frankfurt U.) ; Sanfilippo, Francesco (Southampton U.)
We investigate the order of the finite temperature chiral symmetry restoration transition for QCD with two massless fermions, by using a novel method, based on simulating imaginary values of the quark chemical potential $\mu=i\mu_i,\mu_i\in\mathbb{R}$. Our method exploits the fact that, for low enough quark mass $m$ and large enough chemical potential $\mu_i$, the chiral transition is decidedly first order, then turning into crossover at a critical mass $m_c(\mu)$. [...]
arXiv:1408.5086; CERN-PH-TH-2014-158; IFUP-TH-2014-8; CERN-PH-TH-2014-158; IFUP-TH-2014-8.-
2014-10-23 - 8 p.
- Published in : Phys. Rev. D 90 (2014) 074030
APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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9.
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The chiral phase transition for two-flavour QCD at imaginary and zero chemical potential
/ Bonati, Claudio (INFN, Pisa ; Pisa U.) ; D'Elia, Massimo (INFN, Pisa ; Pisa U.) ; de Forcrand, Philippe (Zurich, ETH ; CERN) ; Philipsen, Owe (Frankfurt U.) ; Sanfilippo, Francesco (Orsay, LPT ; INFN, Rome)
The chiral symmetry of QCD with two massless quark flavours gets restored in a non-analytic chiral phase transition at finite temperature and zero density. Whether this is a first-order or a second-order transition has not yet been determined unambiguously, due to the difficulties of simulating light quarks. [...]
arXiv:1311.0473; CERN-PH-TH-2013-257; CERN-PH-TH-2013-257.-
2014 - 7 p.
- Published in : PoS LATTICE 2013 (2013) 219
Fulltext: PDF; External link: Proceedings of Science Server
In : 31st International Symposium on Lattice Field Theory, Mainz, Germany, 29 Jul - 03 Aug 2013, pp.219
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10.
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Constraints on the two-flavor QCD phase diagram from imaginary chemical potential
/ Bonati, Claudio (Pisa U. ; INFN, Pisa) ; de Forcrand, Philippe (Zurich, ETH ; CERN) ; D'Elia, Massimo (Pisa U. ; INFN, Pisa) ; Philipsen, Owe (Frankfurt U.) ; Sanfilippo, Francesco (Orsay, LPT ; INFN, Rome)
We review our knowledge of the phase diagram of QCD as a function of temperature, chemical potential and quark masses. The presence of tricritical lines at imaginary chemical potential mu=i pi/3 T, with known scaling behaviour in their vicinity, puts constraints on this phase diagram, especially in the case of two light flavors. [...]
arXiv:1201.2769; CERN-PH-TH-2012-003; YITP-12-2; IFUP-TH-2012-01; CERN-PH-TH-2012-003; YITP-12-2; IFUP-TH-2012-01.-
2011 - 7 p.
- Published in : PoS: LATTICE2011 (2011) , pp. 189
Fulltext: Lattice 2011_189 - PDF; arXiv:1201.2769 - PDF; External link: Proceedings of Science Server
In : 29th International Symposium on Lattice Field Theory, Squaw Valley, Lake Tahoe, CA, USA, 10 - 16 Jul 2011, pp.189
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