Transverse Λ polarization in e+e− collisions
Transverse Λ polarization in e+e− collisions
复制标题
e eâ 碰撞中的横向 δ 极化
DOI:
10.1016/j.physletb.2021.136371
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发表时间:
2021
影响因子:
4.4
通讯作者:
Zhao, Fanyi
中科院分区:
文献类型:
--
作者:
Gamberg, Leonard;Kang, Zhong-Bo;Shao, Ding Yu;Terry, John;Zhao, Fanyi
In this paper we study transverse polarization of Λ hyperons in single-inclusive leptonic annihilation. We show that when the transverse momentum of the Λ baryon is measured with respect to the thrust axis, a transverse momentum dependent (TMD) factorization formalism is required and the polarization is generated by the TMD polarizing fragmentation function (TMD PFF), D 1 T⊥. However, when the transverse momentum of the Λ baryon is measured with respect to the momentum of the initial leptons, a collinear twist-3 formalism is required and the polarization is generated by the intrinsic collinear twist-3 fragmentation function D T. Thus while these measurements differ from one another only by a change in the measurement axis, they probe different distribution functions. Recently, Belle measured a significant polarization in single-inclusive Λ baryon production as a function of the transverse momentum with respect to the thrust axis. However, this data can in principle be re-analyzed to measure the polarization as a function of the transverse momentum of the Λ baryon with respect to the lepton pair. This observable could be the first significant probe of the function, D T. In this paper, we first develop a TMD formalism for Λ polarization; we then present a recent twist-3 formalism that was established to describe Λ polarization. Using the TMD formalism, we demonstrate that the Λ polarization at OPAL and Belle can be described using the twist-2 TMD factorization formalism. Finally, we make a theoretical prediction for this polarization in the collinear twist-3 formalism at Belle.
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影响因子:
4.4
作者:
I. Abt;M. Adams;H. Albrecht;V. Amaral;A. Amorim;S. Aplin;V. Aushev;Y. Bagaturia;V. Balagura;M. Bargiotti;O. Barsukova;J. Bastos;C. Bauer;T. Bauer;A. Belkov;A. Belkov;A. Bertin;B. Bobchenko;M. Boecker;A. Bogatyrev;G. Bohm;M. Braeuer;M. Bruinsma;M. Bruschi;P. Buchholz;T. Buran;J. Carvalho;P. Conde;C. Cruse;M. Dam;K. M. Danielsen;M. Danilov;S. Castro;H. Deppe;X. Dong;H. Dreis;V. Egorytchev;K. Ehret;F. Eisele;D. Emeliyanov;S. Essenov;L. Fabbri;P. Faccioli;M. Feuerstack;J. Flammer;B. Fominykh;M. Funcke;L. Garrido;B. Giacobbe;J. Glaess;D. Goloubkov;Y. Goloubkov;A. Golutvin;I. Golutvin;I. Gorbounov;A. Gorišek;O. Gouchtchine;D. Goulart;S. Gradl;W. Gradl;Y. Guilitsky;J. Hansen;J. Hernández;W. Hofmann;T. Hott;W. Hulsbergen;U. Husemann;O. Igonkina;M. Ispiryan;T. Jagla;C. Jiang;H. Kapitza;S. Karabekyan;N. Karpenko;S. Keller;F. Khasanov;Y. Kiryushin;K. Knöpfle;H. Kolanoski;S. Korpar;S. Korpar;C. Krauss;P. Kreuzer;P. Križan;D. Kruecker;T. Kvaratskheliia;A. Lanyov;K. Lau;B. Lewendel;T. Lohse;R. Maenner;S. Masciocchi;I. Massa;L. Matchikhilian;G. medin;M. Medinnis;M. Mevius;A. Michetti;Y. Mikhailov;R. Mizuk;R. Mureşan;M. Negodaev;M. Noerenberg;S. Nowak;M. T. N. P. D. Vera;M. Ouchrif;F. Ould;C. Padilla;D. Peralta;R. Pernack;R. Pestotnik;M. Piccinini;M. Pleier;M. Poli;V. Popov;D. Pose;D. Pose;V. Pugatch;Y. Pylypchenko;J. Pyrlik;K. Reeves;D. Ressing;I. Riu;P. Robmann;V. Rybnikov;F. Sánchez;A. Sbrizzi;M. Schmelling;B. Schmidt;A. Schreiner;H. Schroeder;A. Schwartz;A. Schwarz;B. Schwenninger;B. Schwingenheuer;F. Sciacca;N. Semprini;S. Shuvalov;S. Shuvalov;L. Sözüer;S. Solunin;A. Somov;S. Somov;J. Spengler;R. Spighi;A. Spiridonov;A. Stanovnik;A. Stanovnik;M. Starič;C. Stegmann;M. Symalla;I. Tikhomirov;M. Titov;I. Tsakov;U. Uwer;C. Eldik;Y. Vassiliev;M. Villa;A. Vitale;I. Vukotic;H. Wahlberg;A. Walenta;M. Walter;J. Wang;D. Wegener;U. Werthenbach;H. Wolters;R. Wurth;A. Wurz;Y. Zaitsev;M. Zavertyaev;T. Zeuner;A. Zhelezov;Z. Zheng;R. Zimmermann;T. Živko;A. Zoccoli;A. Aleksandrov;J. Batista;F. Grimaldi;J. Kessler;S. Kupper;M. Nedden;S. Prystupa;H. Rick;I. Rostovtseva;L. Silva;H. S. Subramania;B. Lomonosov;M. Agari;I. Belotelov;S. Erhan;S. Erhan;A. Gellrich;M. Hohlmann;I. Kisel;E. Klinkby;R. Mankel;B. Petersen;U. Schwanke
通讯作者:
U. Schwanke
影响因子:
8.6
作者:
T. Becher;M. Neubert;L. Rothen;D. Shao
通讯作者:
T. Becher;M. Neubert;L. Rothen;D. Shao
DOI:
10.1103/physrevd.51.5305
发表时间:
1995
期刊:
Physical review. D, Particles and fields
影响因子:
--
作者:
Lu
通讯作者:
Lu
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
Andreas Metz
通讯作者:
Andreas Metz
DOI:
--
发表时间:
1990
期刊:
影响因子:
--
作者:
A. Panagiotou
通讯作者:
A. Panagiotou