Event generators for η/η' rare decays into π+π-l+l- and e+e-μ+μ-

• Study of the rare and forbidden decays of η/η' offers a sensitive probe to test fundamental symmetries of quantum chromodynamics and search for new physics beyond the Standard Model. To study the rare decays of η/η' to π+π-e+e-, π+π-μ+μ- and e+e-μ+μ- at the BESⅢ detector, we developed several event generators based on the vector meson dominant model with finite-width corrections and the pseudoscalar mesons mixing theory. The various distributions from event generators are in good agreement with the theoretical predictions, which indicates that the event generators work very well after implemention in the BESⅢ Monte Carlo simulation package. In the BESⅢ physics analysis, the performance of the event generators will be improved in accordance with the distributions of different variables of η/η' from data and the improvement on the theoretical calculations.
PCAS:
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ZHANG Zhen-Yu and QIN Li-Qing. Event generators for η/η' rare decays into π+π-l+l- and e+e-μ+μ-[J]. Chinese Physics C, 2012, 36(10): 926-931. doi: 10.1088/1674-1137/36/10/002
ZHANG Zhen-Yu and QIN Li-Qing. Event generators for η/η' rare decays into π+π-l+l- and e+e-μ+μ-[J]. Chinese Physics C, 2012, 36(10): 926-931.
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Revised: 2012-04-01
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沈阳化工大学材料科学与工程学院 沈阳 110142

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Event generators for η/η' rare decays into π+π-l+l- and e+e-μ+μ-

Corresponding author: ZHANG Zhen-Yu,

Abstract: Study of the rare and forbidden decays of η/η' offers a sensitive probe to test fundamental symmetries of quantum chromodynamics and search for new physics beyond the Standard Model. To study the rare decays of η/η' to π+π-e+e-, π+π-μ+μ- and e+e-μ+μ- at the BESⅢ detector, we developed several event generators based on the vector meson dominant model with finite-width corrections and the pseudoscalar mesons mixing theory. The various distributions from event generators are in good agreement with the theoretical predictions, which indicates that the event generators work very well after implemention in the BESⅢ Monte Carlo simulation package. In the BESⅢ physics analysis, the performance of the event generators will be improved in accordance with the distributions of different variables of η/η' from data and the improvement on the theoretical calculations.

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