کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1853212 | 1528924 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Light 1â+ exotics: Molecular resonances
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Light 1â+ exotics: Molecular resonances Light 1â+ exotics: Molecular resonances](/preview/png/1853212.png)
چکیده انگلیسی
in the search for nonconventional (non-qq¯) meson states are the Ï1(1400) and Ï1(1600) exotic candidates. Should they exist, mounting theoretical arguments suggest that they are tetraquark molecular resonances excitable by meson rescattering. We report a new tetraquark calculation within a model field theory approximation to Quantum Chromodynamics in the Coulomb gauge supporting this conjecture. We also strengthen this claim by consistently contrasting results with exotic state predictions for hybrid (qq¯g) mesons within the same theoretical framework. Our findings confirm that molecular-like configurations involving two color singlets (a resonance, not a bound state) are clearly favored over hybrid or color-exotic tetraquark meson (qq¯qq¯ atoms) formation. Finally, to assist needed further experimental searches we document a useful off-plane correlator for establishing the structure of these exotic systems along with similar, but anticipated much narrower, states that should exist in the charmonium and bottomonium spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 653, Issues 2â4, 20 September 2007, Pages 216-223
Journal: Physics Letters B - Volume 653, Issues 2â4, 20 September 2007, Pages 216-223
نویسندگان
Ignacio J. General, Ping Wang, Stephen R. Cotanch, Felipe J. Llanes-Estrada,