Nucleon to delta transition form factors with NF=2+1 domain wall fermions
We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Δ(1232) transition using two dynamical light degenerate quarks and a dynamical strange quark simulated with the domain wall fermion action. Results are obtained at lattice spacings a=0.114 fm and a=0.084 fm, w...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/64816 https://orcid.org/0000-0002-5713-0039 |
| _version_ | 1826188832825933824 |
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| author | Alexandrou, Constantia Koutsou, Giannis Negele, John W. Proestos, Y. Tsapalis, A. |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Alexandrou, Constantia Koutsou, Giannis Negele, John W. Proestos, Y. Tsapalis, A. |
| author_sort | Alexandrou, Constantia |
| collection | MIT |
| description | We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Δ(1232) transition using two dynamical light degenerate quarks and a dynamical strange quark simulated with the domain wall fermion action. Results are obtained at lattice spacings a=0.114 fm and a=0.084 fm, with corresponding pion masses of 330 MeV and 297 MeV, respectively. High statistics measurements are achieved by utilizing the coherent sink technique. The dominant electromagnetic dipole form factor, the axial form factors and the pseudoscalar coupling are extracted to a good accuracy. This allows the investigation of the nondiagonal Goldberger-Treiman relation. Particular emphasis is given on the extraction of the subdominant electromagnetic quadrupole form factors and their ratio to the dominant dipole form factor, REM and RSM, measured in experiment. |
| first_indexed | 2024-09-23T08:05:25Z |
| format | Article |
| id | mit-1721.1/64816 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:05:25Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/648162022-09-23T10:50:04Z Nucleon to delta transition form factors with NF=2+1 domain wall fermions Nucleon to Δ transition form factors with NF=2+1 domain wall fermions Alexandrou, Constantia Koutsou, Giannis Negele, John W. Proestos, Y. Tsapalis, A. Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Negele, John W. Negele, John W. We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Δ(1232) transition using two dynamical light degenerate quarks and a dynamical strange quark simulated with the domain wall fermion action. Results are obtained at lattice spacings a=0.114 fm and a=0.084 fm, with corresponding pion masses of 330 MeV and 297 MeV, respectively. High statistics measurements are achieved by utilizing the coherent sink technique. The dominant electromagnetic dipole form factor, the axial form factors and the pseudoscalar coupling are extracted to a good accuracy. This allows the investigation of the nondiagonal Goldberger-Treiman relation. Particular emphasis is given on the extraction of the subdominant electromagnetic quadrupole form factors and their ratio to the dominant dipole form factor, REM and RSM, measured in experiment. United States. Dept. of Energy (grant DE-FG02-94ER- 40818) Cyprus Research Promotion Foundation (RPF) (contract ΠENEK/ENIΣX/0505-39) Cyprus Research Promotion Foundation (RPF) (contract EPYAN/0506/08) Cyprus Research Promotion Foundation (RPF) (contract ΔIEΘNHΣ /Σ TOX OΣ /0308/07) 2011-07-15T13:31:40Z 2011-07-15T13:31:40Z 2011-01 2010-11 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/64816 Alexandrou, C. et al. “Nucleon to Delta Transition Form Factors with NF=2+1 Domain Wall Fermions.” Physical Review D 83.1 (2011) : 014501. © 2011 The American Physical Society https://orcid.org/0000-0002-5713-0039 en_US http://dx.doi.org/10.1103/PhysRevD.83.014501 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 | Alexandrou, Constantia Koutsou, Giannis Negele, John W. Proestos, Y. Tsapalis, A. Nucleon to delta transition form factors with NF=2+1 domain wall fermions |
| title | Nucleon to delta transition form factors with NF=2+1 domain wall fermions |
| title_full | Nucleon to delta transition form factors with NF=2+1 domain wall fermions |
| title_fullStr | Nucleon to delta transition form factors with NF=2+1 domain wall fermions |
| title_full_unstemmed | Nucleon to delta transition form factors with NF=2+1 domain wall fermions |
| title_short | Nucleon to delta transition form factors with NF=2+1 domain wall fermions |
| title_sort | nucleon to delta transition form factors with nf 2 1 domain wall fermions |
| url | http://hdl.handle.net/1721.1/64816 https://orcid.org/0000-0002-5713-0039 |
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