Analysis of (1/2)~+ baryon states containing fourth-family quarks from QCD sum rules |
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Authors: | YOU Fu-Yi WANG Zhi-Gang WAN Shao-Long |
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Institution: | 1 Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China 2 Department of Physics,North China Electric Power University,Baoding 071003,China |
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Abstract: | When the fourth generation of quarks have sufficiently small mixing with ordinary standard-model quarks,the hadrons made up from these quarks can be long-lived enough.We analyze the 1 2 + baryon states containing fourth-generation quarks and standard-model quarks,i.e.the charm or bottom quarks,in the QCD sum rules approach.Considering the perturbative and two gluon condensate contributions in the calculation,we give the numerical results of the masses and pole residues. |
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Keywords: | sum rules the fourth generation of quarks baryons |
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