Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order

被引：20

作者：

Gamberg, Leonard ^{[1
]}

Kang, Zhong-Bo ^{[2
,3
,4
]}

Pitonyak, Daniel ^{[1
,5
,6
]}

Schlegel, Marc ^{[7
]}

Yoshida, Shinsuke ^{[4
]}

机构：

[1] Penn State Univ Berks, Div Sci, Reading, PA 19610 USA

[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Mani L Bhaumik Inst Theoret Phys, Los Angeles, CA 90095 USA

[4] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA

[5] Lebanon Valley Coll, Dept Phys, Annville, PA 17003 USA

[6] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA

[7] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 2019卷 / 01期

基金：

美国国家科学基金会;

关键词：

NLO Computations; TRANSVERSE-SPIN ASYMMETRIES; QUARK FRAGMENTATION FUNCTIONS; CHARGED CURRENT INTERACTIONS; LAMBDA-BARYON PRODUCTION; PION-PRODUCTION; CHIRAL-ODD; PARTON DISTRIBUTION; HADRON-PRODUCTION; DRELL-YAN; PROTON;

D O I：

10.1007/JHEP01(2019)111

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the production of polarized -hyperons in electron-positron annihilation. We are particularly interested in the transverse-spin dependence of the cross section for unpolarized incident electron-positron pairs. At high energies this process may be described in the collinear twist-3 framework, where the hadronization transition of partons into a transversely polarized -hyperon can be written in terms of collinear twist-3 fragmentation matrix elements. We calculate the hard partonic cross sections and interference terms in perturbative QCD to next-to-leading order accuracy. We find that the QCD equation of motion plays a crucial role in our analysis. As a byproduct, assuming the validity of QCD factorization for twist-3 observables at next-to-leading order, we derive the evolution equation for the relevant twist-3 fragmentation matrix element.

引用

页数：43

共 50 条

[1] Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order
Leonard Gamberg
Zhong-Bo Kang
Daniel Pitonyak
Marc Schlegel
Shinsuke Yoshida
[J]. Journal of High Energy Physics, 2019
[2] Next-to-leading order QCD corrections to ATT for single-inclusive hadron production
Mukherjee, A
Stratmann, A
Vogelsang, W
[J]. DEEP INELASTIC SCATTERING, 2005, 792 : 997 - 1000
[3] Electron-positron annihilation into four jets at next-to-leading order in alpha(s)
Signer, A
Dixon, L
[J]. PHYSICAL REVIEW LETTERS, 1997, 78 (05) : 811 - 814
[4] Single-inclusive hadron production in polarized pp scattering at next-to-leading logarithmic accuracy
de Florian, Daniel
Vogelsang, Werner
Wagner, Federico
[J]. PHYSICAL REVIEW D, 2007, 76 (09):
[5] Single-inclusive jet production in polarized pp collisions at RHIC to next-to-leading logarithmic accuracy
Daniel de Florian
Federico Wagner
[J]. The European Physical Journal C, 2010, 67 : 367 - 375
[6] Single-inclusive jet production in polarized pp collisions at RHIC to next-to-leading logarithmic accuracy
de Florian, Daniel
Wagner, Federico
[J]. EUROPEAN PHYSICAL JOURNAL C, 2010, 67 (3-4): : 367 - 375
[7] A general algorithm to generate unweighted events for next-to-leading order calculations in electron-positron annihilation
Weinzierl, S
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2001, (08):
[8] Single inclusive forward hadron production at next-to-leading order
Ducloue, B.
Lappi, T.
Zhu, Y.
[J]. PHYSICAL REVIEW D, 2016, 93 (11)
[9] Moments of event shapes in electron-positron annihilation at next-to-next-to-leading order
Weinzierl, Stefan
[J]. PHYSICAL REVIEW D, 2009, 80 (09):
[10] Next-to-leading order calculation of four-jet observables in electron-positron annihilation -: art. no. 014020.
Nagy, Z
Trócsányi, Z
[J]. PHYSICAL REVIEW D, 1999, 59 (01)

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