A Theoretical Prediction of the Bs-Meson Lifetime Difference

6533b837fe1ef96bd12a1da9

RESEARCH PRODUCT

A Theoretical Prediction of the Bs-Meson Lifetime Difference

G. Martinelli Davide Meloni V. Gimenez Vittorio Lubicz Damir Becirevic Alessandra Retico

subject

Physics Particle physics NONPERTURBATIVE RENORMALIZATION Physics and Astronomy (miscellaneous)Meson High Energy Physics - Lattice (hep-lat)Analytical chemistry FOS: Physical sciences Partícules (Física nuclear)Settore FIS/02 - Fisica Teorica Modelli e Metodi Matematici High Energy Physics - Phenomenology Operator matrix MATRIX-ELEMENTS High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph)Lattice (order)Engineering (miscellaneous)QCD CORRECTIONS TO-LEADING ORDER

description

We present the results of a quenched lattice calculation of the operator matrix elements relevant for predicting the Bs width difference. Our main result is (\Delta\Gamma_Bs/\Gamma_Bs)= (4.7 +/- 1.5 +/- 1.6) 10^(-2), obtained from the ratio of matrix elements, R(m_b)=/=-0.93(3)^(+0.00)_(-0.01). R(m_b) was evaluated from the two relevant B-parameters, B_S^{MSbar}(m_b)=0.86(2)^(+0.02)_(-0.03) and B_Bs^{MSbar}(m_b) = 0.91(3)^(+0.00)_(-0.06), which we computed in our simulation.

year	journal	country	edition	language
2000-01-01

https://dx.doi.org/10.48550/arxiv.hep-ph/0006135

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