Timelike pion form factor in lattice QCD

• 青木, 愼也

• Aoki, Sinya

• Hashimoto, Shoji

• Kaneko, Takashi

抄録

We perform a nonperturbative lattice calculation of the complex phase and modulus of the pion form factor in the timelike momentum region using the finite-volume technique. We use two ensembles of 2+1-flavor overlap fermions at pion masses mπ=380 and 290 MeV. By calculating the I=1 correlators in the center-of-mass and three moving frames, we obtain the form factor at ten different values of the timelike momentum transfer around the vector resonance. We compare the results with the phenomenological model of Gounaris-Sakurai and its variant.

収録刊行物

• Physical Review D

  Physical Review D 91 (5), 054504-, 2015-03-01

  American Physical Society (APS)

キーワード

• Nuclear and High Energy Physics

詳細情報

• CRID: 1050566774706129792
• NII論文ID: 120006826702
• ISSN: 15507998
• ISSN: 15502368
• DOI: 10.1103/physrevd.91.054504
• HANDLE: 2433/250304
• Web Site: http://link.aps.org/accepted/10.1103/PhysRevD.91.054504
• Web Site: http://link.aps.org/article/10.1103/PhysRevD.91.054504
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.91.054504/fulltext
• 本文言語コード: en
• 資料種別: journal article
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