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NRQCD matrix elements in polarization of J-Psi produced from b-decay

Sean Fleming·Oscar F. Hernandez·Ivan Maksymyk·Helene Nadeau
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Abstract

We present the non-relativistic QCD (NRQCD) prediction for the polarization of the J-Psi produced in b to J-Psi + X, as well as the helicity-summed production rate. We propose that these observables provide a means of measuring the three most important color-octet NRQCD matrix elements involved in J-Psi production. Anticipating the measurement of the polarization parameter alpha, we determine its expected range given current experimental bounds on the color-octet matrix elements.

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Sean Fleming, Oscar F. Hernandez, Ivan Maksymyk, Helene Nadeau. 1996-08-22. NRQCD matrix elements in polarization of J-Psi produced from b-decay. https://doi.org/10.1103/physrevd.55.4098

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