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Electromagnetic radiation of baryons containing two heavy quarks | | Wu-Sheng Dai
; Xin-Heng Guo
; Hong-Ying Jin
; Xue-Qian Li
; | | Date: |
18 May 2000 | | Journal: | Phys.Rev. D62 (2000) 114026 | | Subject: | hep-ph | | Abstract: | The two heavy quarks in a baryon which contains two heavy quarks and a light one, can constitute a scalar or axial vector diquark. We study electromagnetic radiations of such baryons, (i) Xi_{(bc)_1} -> Xi_{(bc)_0}+gamma, (ii) Xi_{(bc)_1}^* -> Xi_{(bc)_0}+gamma, (iii) Xi_{(bc)_0}^{**}(1/2, l=1) -> Xi_{(bc)_0}+gamma, (iv) Xi_{(bc)_0}^{**}(3/2, l=1) -> Xi_{(bc)_0}+gamma and (v) Xi_{(bc)_0}^{**}(3/2, l=2) -> Xi_{(bc)_0}+gamma, where Xi_{(bc)_{0(1)}}, Xi^*_{(bc)_1} are S-wave bound states of a heavy scalar or axial vector diquark and a light quark, and Xi_{(bc)_0}^{**}(l is bigger than 1) are P- or D-wave bound states of a heavy scalar diquark and a light quark. Analysis indicates that these processes can be attributed into two categories and the physical mechanisms which are responsible for them are completely distinct. Measurements can provide a good judgment for the diquark structure and better understanding of the physical picture. | | Source: | arXiv, hep-ph/0005177 | | Services: | Forum | Review | PDF | Favorites | |
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