Sivers and Boer-Mulders observables from lattice QCD
We present a first calculation of transverse momentum-dependent nucleon observables in dynamical lattice QCD employing nonlocal operators with staple-shaped, “process-dependent” Wilson lines. The use of staple-shaped Wilson lines allows us to link lattice simulations to TMD effects determined from e...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/71647 https://orcid.org/0000-0002-5713-0039 |
| _version_ | 1826193305267863552 |
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| author | Musch, B. U. Hagler, Ph. Engelhardt, M. Negele, John W. Schafer, A. |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Musch, B. U. Hagler, Ph. Engelhardt, M. Negele, John W. Schafer, A. |
| author_sort | Musch, B. U. |
| collection | MIT |
| description | We present a first calculation of transverse momentum-dependent nucleon observables in dynamical lattice QCD employing nonlocal operators with staple-shaped, “process-dependent” Wilson lines. The use of staple-shaped Wilson lines allows us to link lattice simulations to TMD effects determined from experiment, and, in particular, to access nonuniversal, naively time-reversal odd TMD observables. We present and discuss results for the generalized Sivers and Boer-Mulders transverse momentum shifts for the SIDIS and DY cases. The effect of staple-shaped Wilson lines on T-even observables is studied for the generalized tensor charge and a generalized transverse shift related to the worm-gear function g[subscript 1T]. We emphasize the dependence of these observables on the staple extent and the Collins-Soper evolution parameter. Our numerical calculations use an n[subscript f]=2+1 mixed action scheme with domain wall valence fermions on an Asqtad sea and pion masses 369 MeV as well as 518 MeV. |
| first_indexed | 2024-09-23T09:36:53Z |
| format | Article |
| id | mit-1721.1/71647 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:36:53Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/716472024-06-26T21:00:37Z Sivers and Boer-Mulders observables from lattice QCD Musch, B. U. Hagler, Ph. Engelhardt, M. Negele, John W. Schafer, A. Massachusetts Institute of Technology. Center for Theoretical Physics Negele, John W. Negele, John W. We present a first calculation of transverse momentum-dependent nucleon observables in dynamical lattice QCD employing nonlocal operators with staple-shaped, “process-dependent” Wilson lines. The use of staple-shaped Wilson lines allows us to link lattice simulations to TMD effects determined from experiment, and, in particular, to access nonuniversal, naively time-reversal odd TMD observables. We present and discuss results for the generalized Sivers and Boer-Mulders transverse momentum shifts for the SIDIS and DY cases. The effect of staple-shaped Wilson lines on T-even observables is studied for the generalized tensor charge and a generalized transverse shift related to the worm-gear function g[subscript 1T]. We emphasize the dependence of these observables on the staple extent and the Collins-Soper evolution parameter. Our numerical calculations use an n[subscript f]=2+1 mixed action scheme with domain wall valence fermions on an Asqtad sea and pion masses 369 MeV as well as 518 MeV. 2012-07-17T14:03:14Z 2012-07-17T14:03:14Z 2012-05 2011-11 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1089-4918 http://hdl.handle.net/1721.1/71647 Musch, B. et al. “Sivers and Boer-Mulders Observables from Lattice QCD.” Physical Review D 85.9 (2012). © 2012 American Physical Society https://orcid.org/0000-0002-5713-0039 en_US http://dx.doi.org/10.1103/PhysRevD.85.094510 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Musch, B. U. Hagler, Ph. Engelhardt, M. Negele, John W. Schafer, A. Sivers and Boer-Mulders observables from lattice QCD |
| title | Sivers and Boer-Mulders observables from lattice QCD |
| title_full | Sivers and Boer-Mulders observables from lattice QCD |
| title_fullStr | Sivers and Boer-Mulders observables from lattice QCD |
| title_full_unstemmed | Sivers and Boer-Mulders observables from lattice QCD |
| title_short | Sivers and Boer-Mulders observables from lattice QCD |
| title_sort | sivers and boer mulders observables from lattice qcd |
| url | http://hdl.handle.net/1721.1/71647 https://orcid.org/0000-0002-5713-0039 |
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