Pregled bibliografske jedinice broj: 1190571
Single-spin asymmetries at two loops
Single-spin asymmetries at two loops // Physical review. D, 100 (2019), 9; 094027, 18 doi:10.1103/PhysRevD.100.094027 (međunarodna recenzija, članak, znanstveni)
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Naslov
Single-spin asymmetries at two loops
Autori
Benić, Sanjin ; Hatta, Yoshitaka ; Li, Hsiang-nan ; Yang, Dong-Jin
Izvornik
Physical review. D (2470-0010) 100
(2019), 9;
094027, 18
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Single-spin asymmetries
Sažetak
We find a novel mechanism for generating transverse single-spin asymmetry (SSA) in semi- inclusive deep inelastic scattering, distinct from the known ones which involve the Sivers and Collins functions, or their collinear twist-three counterparts. It is demonstrated that a phase needed for SSA can be produced purely within a parton-level cross section starting at two loops. We identify the complete set of two-loop diagrams for SSA, and discuss their gauge invariance and collinear factorization which features the g_T distribution function. In the k_T factorization framework, many more sources for SSA exist, and contributions from all possible two-parton transverse-momentum-dependent parton distribution functions are presented up to two loops and twist three.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- Nature Index
