BCVEGPY and GENXICC for the hadronic production of the doubly heavy mesons and baryons

Abstract

Doubly heavy mesons and baryons provide a good platform for testing pQCD. Two generators BCVEGPY and GENXICC for simulating the hadronic production of the doubly heavy mesons and baryons have been developed in recent years. In this talk, we present their main idea and their recent progresses. The dominant gluon-gluon fusion mechanism programmed in those two generators are written based on the improved helicity amplitude approach, in which the hard scattering amplitude are dealt with directly at the amplitude level and the numerical efficiency are greatly improved by properly decomposing the Feynman diagrams and by fully applying the symmetries among them. Moreover, in comparison to the previous versions, we have updated the programs in order to generate the unweighted meson or baryon events much more effectively within various simulation environments. The generators can be conveniently imported into PYTHIA to do further hadronization and decay simulation.

7 pages, 5 figures. Talk presented at ACAT 2013. References updated and discussions improved

References in corpus (17)

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Cited by in corpus (8)

• Electron-Ion Collider in China
• Measurement of the lifetime of the $B_c^{+}$ meson using the $B_c^{+}\to J/\psi {\pi }^{+}$ decay mode
• The $B_c(B_c^{\ast })$ meson production via the proton-nucleus and the nucleus-nucleus collision modes at the colliders RHIC and LHC
• Observation of the $B_c^{+}\to J/\psi {\pi }^{+}{\pi }^0$ decay
• Observation of orbitally excited $B_c^{+}$ states
• Study of $B_c^{+}\to {\chi }_c{\pi }^{+}$ decays
• Study of $B_c(1P{)}^{+}$ states in the $B_c^{+}\gamma$ mass spectrum
• Search for the $B_c^{+}\to {\chi }_{c1}(3872){\pi }^{+}$ decay