Interplay among transversity induced asymmetries in hadron leptoproduction

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题名:	Interplay among transversity induced asymmetries in hadron leptoproduction
作者:	彭仁傑;Birsa, R;Buchele, M;Kouznetsov, O;Szameitat, T;Kisselev, Yu;Sozzi, F;Nikolaenko, V.I;Orlov, I;Giordano, F;Schopferer, S;Matousek, J;Dhara, L;Balestra, F;Slunecka, M;Weisrock, T;Eyrich, W;Mikhailov, Yu. V;Khokhlov, Yu. A;Ramos, S;Wolbeek, J. ter;Schmidt, K;Zaremba, K;von Hohenesche, N. du Fresne;Amoroso, A;Austregesilo, A;Sbrizzai, G;Beck, R;Elia, C;Kurek, K;Srnka, A;Gautheron, F;Longo, R;Haas, F;Cicuttin, A;Montuenga, P;Nerling, F;Khaustov, G.V;Grube, B;Sinha, L;Chung, S.U;Rychter, A;Frolov, V;Marzec, J;Eversheim, P.D;Ziembicki, M;Bradamante, F;Bernhard, J;Horikawa, N;Peshekhonov, D.V;Ishimoto, S;Finger, M;Nunes, A.S;Klein, F;Grosse-Perdekamp, M;Meshcheryakov, G;Bisplinghoff, J;Maggiora, A;Herrmann, F;Pereira, F;Joosten, R;Doshita, N;Marchand, C;Peng, J.C;Jorg, P;Polyakov, V.A;Dasgupta, S.S;Jary, V;Suzuki, H;Schiavon, P;Samoylenko, V.D;Makins, N;Ferrero, A;Parsamyan, B;Franco, C;Schonning, K;Sznajder, P;Chiosso, M;Magnon, A;Sandacz, A;Novy, J;Guskov, A;Gnesi, I;Heinsius, F.H;Levillain, M;Kremser, P;Kolosov, V.N;Martin, A;Gavrichtchouk, O.P;Tosello, F;Efremov, A;Kroumchtein, Z.V;Tessarotto, F;Sarkar, S;Ostrick, M;Fuchey, E;Bielert, E.R;Neyret, D;Bicker, K;Pochodzalla, J;Pesek, M
贡献者:	高能與強場物理研究中心
关键词:	Experiment;Nuclear Experiment;Particle Physics;Physics
日期:	2016-02-10
上传时间:	2026-04-23 12:02:59 (UTC+8)
出版者:	Elsevier;Elsevier B.V
摘要:	摘要： In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A phenomenological analysis of the data allows to establish quantitative relationships among them, providing strong indication that the underlying fragmentation mechanisms are all driven by a common physical process. In the fragmentation of a transversely polarized quark several left–right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as the Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A new analysis of the data allows quantitative relationships to be established among them, providing for the first time strong experimental indication that the underlying fragmentation mechanisms are all driven by a common physical process. In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A new analysis of the data allows to establish quantitative relationships among them, providing for the first time strong experimental indication that the underlying fragmentation mechanisms are all driven by a common physical process. 出版者： Elsevier B.V 出版日期： 2016-02-10 出處： Modern physics letters. B, Condensed matter physics, statistical physics, applied physics, 2016-02, Vol.753 (C), p.406-411 資源來源： ScienceDirect 版權： 2015 The Authors 版權： licence_http://creativecommons.org/publicdomain/zero 識別號： ISSN: 0370-2693 識別號： ISSN: 0217-9849 識別號： ISSN: 1873-2445 識別號： EISSN: 1873-2445 識別號： EISSN: 0217-9849 識別號： DOI: 10.1016/j.physletb.2015.12.042
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