Probing transversity by measuring Λ polarisation in SIDIS
Probing transversity by measuring Λ polarisation in SIDIS
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DOI：
10.1016/j.physletb.2021.136834
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发表时间：
2021-04
影响因子：
4.4
通讯作者：
G. Alexeev;M. Alexeev;A. Amoroso;V. Andrieux;V. Anosov;K. Augsten;W. Augustyniak;C. Azevedo;B. Badelek;F. Balestra;M. Ball;J. Barth;R. Beck;Y. Bedfer;J. Berenguer Antequera;J. Bernhard;M. Bodlák;F. Bradamante;A. Bressan;V. Burtsev;W. Chang;C. Chatterjee;M. Chiosso;A. Chumakov;S. Chung;A. Cicuttin;P. Correia;M. Crespo;D. D’Ago;S. Dalla Torre;S. Dasgupta;S. Dasgupta;I. Denisenko;O. Denisov;S. Donskov;N. Doshita;C. Dreisbach;W. Dünnweber;R. Dusaev;A. Efremov;C. Elia;D. Eremeev;P. Eversheim;P. Faccioli;M. Faessler;A. Ferrero;M. Finger;H. Fischer;K. Flöthner;C. Franco;J. Friedrich;V. Frolov;L. G. García Ordóñez;F. Gautheron;O. Gavrichtchouk;S. Gerassimov;J. Giarra;D. Giordano;I. Gnesi;M. Gorzellik;A. Grasso;A. Gridin;M. Grosse Perdekamp;B. Grube;A. Guskov;D. von Harrach;R. Heitz;M. Hoffmann;N. Horikawa;N. d'Hose;C. Hsieh;S. Huber;S. Ishimoto;A. Ivanov;T. Iwata;M. Jandek;V. Jarý;R. Joosten;E. Kabuß;D. Kang;F. Kaspar;A. Kerbizi;B. Ketzer;G. Khaustov;Y. Khokhlov;Y. Kisselev;F. Klein;J. Koivuniemi;V. Kolosov;K. Kondo Horikawa;I. Konorov;V. Konstantinov;A. Kotzinian;O. Kouznetsov;A. Koval;Z. Kral;F. Krinner;Y. Kulinich;F. Kunne;K. Kurek;R. Kurjata;A. Kveton;K. Lavickova;S. Levorato;Y.-S. Lian;J. Lichtenstadt;P. Lin;R. Longo;V. Lyubovitskij;A. Maggiora;A. Magnon;N. Makins;N. Makke;G. Mallot;A. Maltsev;S. Mamon;B. Mariański;A. Martin;J. Marzec;J. Matoušek;T. Matsuda;G. Mattson;G. Meshcheryakov;F. Metzger;M. Meyer;W. Meyer;Y. Mikhailov;M. Mikhasenko;E. Mitrofanov;Y. Miyachi;A. Moretti;A. Nagaytsev;C. Naim;T. Negrini;D. Neyret;J. Nový;W. Nowak;G. Nukazuka;A. S. Nunes;A. Olshevsky;M. Ostrick;D. Panzieri;B. Parsamyan;S. Paul;H. Pekeler;J. Peng;M. Pešek;D. Peshekhonov;M. Pešková;N. Pierre;S. Platchkov;J. Pochodzalla;V. Polyakov;J. Pretz;M. Quaresma;C. Quintans;G. Reicherz;C. Riedl;T. Rudnicki;D. Ryabchikov;A. Rychter;A. Rymbekova;V. Samoylenko;A. Sandacz;S. Sarkar;I. Savin;G. Sbrizzai;P. Schiavon;H. Schmieden;A. Selyunin;K. Sharko;L. Sinha;M. Slunecka;J. Smolík;F. Sozzi;A. Srnka;D. Steffen;M. Stolarski;O. Subrt;M. Sulc;H. Suzuki;P. Sznajder;S. Tessaro;F. Tessarotto;A. Thiel;J. Tomsa;F. Tosello;A. Townsend;V. Tskhay;S. Uhl;B. Vasilishin;A. Vauth;B. M. Veit;J. Veloso;B. Ventura;A. Vidon;M. Virius;M. Wagner;S. Wallner;K. Zaremba;P. Zavada;M. Zavertyaev;M. Zemko;E. Zemlyanichkina;Y. Zhao;M. Ziembicki
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文献类型：
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作者：
G. Alexeev;M. Alexeev;A. Amoroso;V. Andrieux;V. Anosov;K. Augsten;W. Augustyniak;C. Azevedo;B. Badelek;F. Balestra;M. Ball;J. Barth;R. Beck;Y. Bedfer;J. Berenguer Antequera;J. Bernhard;M. Bodlák;F. Bradamante;A. Bressan;V. Burtsev;W. Chang;C. Chatterjee;M. Chiosso;A. Chumakov;S. Chung;A. Cicuttin;P. Correia;M. Crespo;D. D’Ago;S. Dalla Torre;S. Dasgupta;S. Dasgupta;I. Denisenko;O. Denisov;S. Donskov;N. Doshita;C. Dreisbach;W. Dünnweber;R. Dusaev;A. Efremov;C. Elia;D. Eremeev;P. Eversheim;P. Faccioli;M. Faessler;A. Ferrero;M. Finger;H. Fischer;K. Flöthner;C. Franco;J. Friedrich;V. Frolov;L. G. García Ordóñez;F. Gautheron;O. Gavrichtchouk;S. Gerassimov;J. Giarra;D. Giordano;I. Gnesi;M. Gorzellik;A. Grasso;A. Gridin;M. Grosse Perdekamp;B. Grube;A. Guskov;D. von Harrach;R. Heitz;M. Hoffmann;N. Horikawa;N. d'Hose;C. Hsieh;S. Huber;S. Ishimoto;A. Ivanov;T. Iwata;M. Jandek;V. Jarý;R. Joosten;E. Kabuß;D. Kang;F. Kaspar;A. Kerbizi;B. Ketzer;G. Khaustov;Y. Khokhlov;Y. Kisselev;F. Klein;J. Koivuniemi;V. Kolosov;K. Kondo Horikawa;I. Konorov;V. Konstantinov;A. Kotzinian;O. Kouznetsov;A. Koval;Z. Kral;F. Krinner;Y. Kulinich;F. Kunne;K. Kurek;R. Kurjata;A. Kveton;K. Lavickova;S. Levorato;Y.-S. Lian;J. Lichtenstadt;P. Lin;R. Longo;V. Lyubovitskij;A. Maggiora;A. Magnon;N. Makins;N. Makke;G. Mallot;A. Maltsev;S. Mamon;B. Mariański;A. Martin;J. Marzec;J. Matoušek;T. Matsuda;G. Mattson;G. Meshcheryakov;F. Metzger;M. Meyer;W. Meyer;Y. Mikhailov;M. Mikhasenko;E. Mitrofanov;Y. Miyachi;A. Moretti;A. Nagaytsev;C. Naim;T. Negrini;D. Neyret;J. Nový;W. Nowak;G. Nukazuka;A. S. Nunes;A. Olshevsky;M. Ostrick;D. Panzieri;B. Parsamyan;S. Paul;H. Pekeler;J. Peng;M. Pešek;D. Peshekhonov;M. Pešková;N. Pierre;S. Platchkov;J. Pochodzalla;V. Polyakov;J. Pretz;M. Quaresma;C. Quintans;G. Reicherz;C. Riedl;T. Rudnicki;D. Ryabchikov;A. Rychter;A. Rymbekova;V. Samoylenko;A. Sandacz;S. Sarkar;I. Savin;G. Sbrizzai;P. Schiavon;H. Schmieden;A. Selyunin;K. Sharko;L. Sinha;M. Slunecka;J. Smolík;F. Sozzi;A. Srnka;D. Steffen;M. Stolarski;O. Subrt;M. Sulc;H. Suzuki;P. Sznajder;S. Tessaro;F. Tessarotto;A. Thiel;J. Tomsa;F. Tosello;A. Townsend;V. Tskhay;S. Uhl;B. Vasilishin;A. Vauth;B. M. Veit;J. Veloso;B. Ventura;A. Vidon;M. Virius;M. Wagner;S. Wallner;K. Zaremba;P. Zavada;M. Zavertyaev;M. Zemko;E. Zemlyanichkina;Y. Zhao;M. Ziembicki
基于半包容深度非弹性散射测量（SIDIS）中单强子和强子对产生中相当大的靶横自旋不对称性的观测，手征奇横动量夸克分布函数h1 q得到了较好的建立.最初提出了几种可能的渠道来访问这些功能。一个候选方案是测量在SIDIS中产生的Λ超子的极化离开横向极化的核子，其中撞击夸克的横向极化可能转移到末态超子。本文介绍了用COMPASS方法研究横向极化质子在SIDIS中产生的Λ和Λ ′超子的横向诱导极化的结果。在实验不确定度范围内，未观察到与零的显著偏差。结果进行了讨论的背景下，考虑到以前的实验结果，对h 1 u和h 1 d的不同模型。
Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SIDIS), the chiral-odd transversity quark distribution functions h 1 q are nowadays well established. Several possible channels to access these functions were originally proposed. One candidate is the measurement of the polarisation of Λ hyperons produced in SIDIS off transversely polarised nucleons, where the transverse polarisation of the struck quark might be transferred to the final-state hyperon. In this article, we present the COMPASS results on the transversity-induced polarisation of Λ and Λ¯ hyperons produced in SIDIS off transversely polarised protons. Within the experimental uncertainties, no significant deviation from zero was observed. The results are discussed in the context of different models taking into account previous experimental results on h 1 u and h 1 d.