Abstract
Triply heavy baryons are very interesting hadrons to be explored for they provide particular information about strong interactions, hadron structures, and weak decays of heavy baryons. We calculate the hadronic production cross sections of the Ω ccc and the Ω ccb , which are dominated by the gg fusion subprocesses containing 4362 and 1454 Feynman diagrams, respectively. A method for generating and calculating tree level Feynman diagrams automatically is developed to deal with complicated processes containing so many diagrams. Our results show that 104 − 105 events of triply heavy baryons can be accumulated for 10 fb −1 integrated luminosity at LHC. Signatures of the triply heavy baryons are pointed out, with emphasis on the decay modes Ω ccc → Ω sss + 3π + and Ω ccb → Ω sss + 3π + + π −. We conclude that it is quite promising to discover them at LHC.
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References
G.T. Bodwin, E. Braaten and G.P. Lepage, Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium, Phys. Rev. D 51 (1995) 1125 [Erratum ibid. D 55 (1997) 5853] [hep-ph/9407339] [SPIRES].
E. Witten, Baryons in the 1/n Expansion, Nucl. Phys. B 160 (1979) 57 [SPIRES].
P. Hasenfratz, R.R. Horgan, J. Kuti and J.M. Richard, Heavy baryon spectroscopy in the QCD bag model, Phys. Lett. B 94 (1980) 401 [SPIRES].
J.P. Ader, J.M. Richard and P. Taxil, Do narrow heavy multi-quark states exist?, Phys. Rev. D 25 (1982) 2370 [SPIRES].
M. Tsuge, T. Morii and J. Morishita, Baryon spectrum in the potential model with relativistic corrections, Mod. Phys. Lett. A 1 (1986) 131 [Erratum ibid. A 2 (1987) 283] [SPIRES].
F. Becattini, Production of multiply heavy flavoured baryons from quark gluon plasma in relativistic heavy ion collisions, Phys. Rev. Lett. 95 (2005) 022301 [hep-ph/0503239] [SPIRES].
A.P. Martynenko, Ground-state triply and doubly heavy baryons in a relativistic three-quark model, Phys. Lett. B 663 (2008) 317 [arXiv:0708.2033] [SPIRES].
Y. Jia, Variational study of weakly coupled triply heavy baryons, JHEP 10 (2006) 073 [hep-ph/0607290] [SPIRES].
S. Meinel, Prediction of the Omega bbb mass from lattice QCD, Phys. Rev. D 82 (2010) 114514 [arXiv:1008.3154] [SPIRES].
J.D. Bjorken, Is the CCC a New Deal for Baryon Spectroscopy?, in Proceedings of the International Conference on Hadron Spetroscopy, College Park, MD (1985) FERMILAB-CONF-85-069.
N. Brambilla, A. Vairo and T. Rosch, Effective field theory Lagrangians for baryons with two and three heavy quarks, Phys. Rev. D 72 (2005) 034021 [hep-ph/0506065] [SPIRES].
A. Vairo, Effective field theories for baryons with two-and three-heavy quarks, Few Body Syst. 49 (2011) 263 [arXiv:1008.4473] [SPIRES].
J.-R. Zhang and M.-Q. Huang, Deciphering triply heavy baryons in terms of QCD sum rules, Phys. Lett. B 674 (2009) 28 [arXiv:0902.3297] [SPIRES].
B. Patel, A. Majethiya and P.C. Vinodkumar, Masses and Magnetic moments of Triply Heavy Flavour Baryons in Hypercentral Model, Pramana 72 (2009) 679 [arXiv:0808.2880] [SPIRES].
S.P. Baranov and V.L. Slad, Production of Triply Charmed Ω ccc Baryons in e + e − Annihilation, Phys. Atom. Nucl. 67 (2004) 808 [hep-ph/0603090] [SPIRES].
V.A. Saleev, Ω ccc production via fragmentation at LHC, Mod. Phys. Lett. A 14 (1999) 2615 [hep-ph/9906515] [SPIRES].
M.A. Gomshi Nobary and R. Sepahvand, Fragmentation of triply heavy baryons, Phys. Rev. D 71 (2005) 034024 [hep-ph/0406148] [SPIRES].
M.A. Gomshi Nobary and R. Sepahvand, An ivestigation of triply heavy baryon production at hadron colliders, Nucl. Phys. B 741 (2006) 34 [hep-ph/0508115] [SPIRES].
M.A. Gomshi Nobary, Fragmentation Production of Ω ccc and Omega bbb Baryons, Phys. Lett. B 559 (2003) 239 [Erratum ibid. B 598 (2004) 294] [hep-ph/0408122] [SPIRES].
Y.-Q. Chen, Perturbative QCD predictions for the fragmentation functions of the P wave mesons with two heavy quarks, Phys. Rev. D 48 (1993) 5181 [SPIRES].
C.-H. Chang, Y.-Q. Chen and R.J. Oakes, Comparative Study of the Hadronic Production of B c Mesons, Phys. Rev. D 54 (1996) 4344 [hep-ph/9602411] [SPIRES].
C.-H. Chang and Y.-Q. Chen, The Production of B(c) or anti-B(c) meson associated with two heavy quark jets in Z0 boson decay, Phys. Rev. D 46 (1992) 3845 [Erratum ibid. D 50 (1994) 6013] [SPIRES].
V.D. Barger, A.L. Stange and R.J.N. Phillips, Four heavy quark hadroproduction, Phys. Rev. D 44 (1991) 1987 [SPIRES].
C.-H. Chang and Y.-Q. Chen, The hadronic production of the B(c) meson at Tevatron, CERN LHC and SSC, Phys. Rev. D 48 (1993) 4086 [SPIRES].
J. Pumplin et al., New generation of parton distributions with uncertainties from global QCD analysis, JHEP 07 (2002) 012 [hep-ph/0201195] [SPIRES].
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ArXiv ePrint: 1106.0193
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Chen, YQ., Wu, SZ. Production of triply heavy baryons at LHC. J. High Energ. Phys. 2011, 144 (2011). https://doi.org/10.1007/JHEP08(2011)144
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DOI: https://doi.org/10.1007/JHEP08(2011)144