Analysis of (1/2)+ baryon states containing fourth-family quarks from QCD sum rules

  • 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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YOU Fu-Yi, WANG Zhi-Gang and WAN Shao-Long. Analysis of (1/2)+ baryon states containing fourth-family quarks from QCD sum rules[J]. Chinese Physics C, 2012, 36(6): 498-504. doi: 10.1088/1674-1137/36/6/004
YOU Fu-Yi, WANG Zhi-Gang and WAN Shao-Long. Analysis of (1/2)+ baryon states containing fourth-family quarks from QCD sum rules[J]. Chinese Physics C, 2012, 36(6): 498-504.  doi: 10.1088/1674-1137/36/6/004 shu
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Received: 2011-08-31
Revised: 2011-10-08
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Analysis of (1/2)+ baryon states containing fourth-family quarks from QCD sum rules

    Corresponding author: YOU Fu-Yi,

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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