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Stephan Narison is a Malagasy theoretical high-energy physicist specialized in quantum chromodynamics (QCD), the gauge theory of strong interactions. He is the founder of the Series of International Conferences in Quantum Chromodynamics (QCD-Montpellier) and of the Series of International Conferences in High-Energy Physics (HEPMAD-Madagascar). He is a world expert on QCD spectral sum rules (QSSR) or SVZ sum rules which have been introduced by M.A. Shifman, A.I. Vainshtein and V.I. Zakahrov〔M.A. Shifman, A.I. and Vainshtein and V.I. Zakharov, ''Nucl. Phys. B'' 147 (1979) 385; ''Nucl. Phys. B'' 147 (1979) 448.〕 for studying the non-perturbative dynamics of hadrons. ==Scientific contributions== Among his various publications (237 papers as of January 2014), his most famous work is the first determination of the QCD coupling αs from hadronic heavy lepton τ-decays〔E. Braaten, S. Narison and A. Pich, ''Nucl. Phys. B'' 373 (1992) 581; S. Narison and A. Pich, ''Phys. Lett. B'' 211 (1988) 183.〕 where the running of αs from the τ-mass until the Z-boson mass demonstrates its 1/log Q^2 behavior predicted by asymptotic freedom. He has contributed to the definition of the running and invariant quark masses in QCD〔E.G. Floratos, S. Narison and E. de Rafael, ''Nucl. Phys. B'' 155 (1979) 155; C. Becchi, S. Narison, E. de Rafael and F.J. Yndurain, ''Z. Phys. C'' 8 (1981) 335; S. Narison and E. de Rafael, ''Phys. Lett. B'' 103 (1981) 57.〕 and on the tests of the gluonium/glueball nature of the scalar meson σ/f0(500) using QSSR,〔S. Narison and G. Veneziano, ''Int. J. Mod. Phys. A'' 4 (1988) 2751; S. Narison, ''Nucl. Phys. B'' 509 (1998) 312; ''Phys. Rev. D'' 73 (2006) 114024.〕 ππ and γγ scatterings data.〔G. Mennessier, S. Narison and X.-G. Wang, ''Phys. Lett. B'' 696 (2011) 40; ''Phys. Lett. B'' 688 (2010) 59; R. Kaminski, G. Mennessier and S. Narison, ''Phys. Lett. B'' 680 (2009) 148; G. Mennessier, S. Narison and W. Ochs, ''Phys. Lett. B'' 665 (2008) 205.〕 His important estimates of the light〔S. Narison, ''Phys. Rev. D'' 74 (2006) 034013; ''Phys. Lett. B'' 738 (2014) 346 and references therein.〕 and heavy〔S. Narison, ''Phys. Lett. B'' 693 (2010) 559; Erratum ''ibid'' 705 (2011) 544; ''Phys. Lett. B'' 706 (2012) 412; ''Phys. Lett. B'' 707 (2012) 259 and references therein.〕 quark masses and leptonic heavy-light mesons decay constants〔S. Narison, ''Phys. Lett. B'' 198 (1987) 104; ''Phys. Lett. B'' 605 (2005) 319; ''Phys. Lett. B'' 718 (2013) 1321; ''Phys. Lett. B'' 721 (2013) 269; arXiv:1404.6642().〕 are compiled in the Particle Data Group (PDG).〔K.A. Olive ''et al.'' (Particle Data Group: PDG), Review of Particle Physics, ''Chin. Phys. C'' 38(9) (2014) 090001.〕 He has also contributed to the QCD U(1) anomaly effect in the spin of the proton〔S. Narison, G.M. Shore, G. Veneziano, ''Nucl. Phys. B'' 546 (1999) 235; ''Nucl. Phys. B'' 391 (1993) 69-99; ''Nucl. Phys. B'' 433 (1995) 209-233.〕 and on the parametrization of the non-calculated higher order terms of the perturbative series in terms of the square of the tachyonic gluon mass not included in the standard Wilson Operator Product Expansion (OPE).〔K. Chetyrkin, S. Narison and V.I. Zakharov, ''Nucl. Phys. B'' 550 (1999) 353; S. Narison and V.I. Zakharov, ''Phys. Lett. B'' 522 (2001) 266; ''Phys. Lett. B'' 679 (2009) 355.〕 He has contributed to the estimation of the hadronic contribution to the muon anomalous magnetic moment aμ=(gμ-2)/2.〔J. Calmet, M. Perrottet, S. Narison and E. de Rafael, ''Rev. Mod. Phys.'' 49 (1977) 21; S. Narison, ''Phys. Lett. B'' 513 (2001) 53; Erratum ''ibid'' 526 (2002) 414.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Stephan Narison」の詳細全文を読む スポンサード リンク
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