Learn More
B. Aubert, M. Bona, Y. Karyotakis, J. P. Lees, V. Poireau, E. Prencipe, X. Prudent, V. Tisserand, J. Garra Tico, E. Grauges, L. Lopez, A. Palano, M. Pappagallo, G. Eigen, B. Stugu, L. Sun, G. S. Abrams, M. Battaglia, D.N. Brown, R. N. Cahn, R. G. Jacobsen, L. T. Kerth, Yu. G. Kolomensky, G. Lynch, I. L. Osipenkov, M. T. Ronan,* K. Tackmann, T. Tanabe, C.M.(More)
velocities still depend only on the index k of the hit boundary simplex, but where they are not restricted by this constraint. By the Perron{Frobenius theorem there also exists an unique probability measure but its algebraic expression is not as simple as in the case above, especially for larger values of n. A further class of dynamical systems is obtained(More)
The production of Υ (1S), Υ (2S) and Υ (3S) mesons in proton-proton collisions at the centre-of-mass energy of √ s = 7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb−1 collected at the Large Hadron Collider. The Υ mesons are reconstructed in the decay mode Υ → μ+μ− and the signal yields are extracted from a fit to the(More)
5 6 & < = ' " 0$ . $ = ' ' > *1 0 3 * ' B 0 . 4. # 9 0$4 @ 9 $ $ 9$ . $ 7 4 # % ? 0 2 8. ? 8 C) 3 ' ( 3 )$ 8 C) 3 & , ? 'CD.$ # *E. & % $ ) % $ $ $ 9 $ : $ 5 6 * ($ ' ? ) 0 2 * 0 # 7 4 * " 2 ) . ( C F ! " 7 0. : & 0E ) $ **+ ( , + ! ! $$ ( ( ) * ( ) # G: '> 2 C; . $ = $ * $ " % . ' . ! = $ $''. H . ? . 'I # " ! 5 6 & < = ' " --&C $ $ = ' ' > & + % $ .' J 4(More)
The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at √ s = 7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb−1. The ψ(2S) mesons are reconstructed in the decay channels ψ(2S) → μ+μ− and ψ(2S) → J/ψπ+π−, with the J/ψ meson decaying into two muons.(More)
T. Adam, N. Agafonova, A. Aleksandrov, O. Altinok, P. Alvarez Sanchez, S. Aoki, A. Ariga, T. Ariga, D. Autiero, A. Badertscher, A. Ben Dhahbi, A. Bertolin, C. Bozza, T. Brugière, F. Brunet, G. Brunetti, S. Buontempo, F. Cavanna, A. Cazes, L. Chaussard, M. Chernyavskiy, V. Chiarella, A. Chukanov, G. Colosimo, M. Crespi, N. D’Ambrosio, Y. Déclais, P. del Amo(More)
The calibration and performance of the oppositeside flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B+ → J/ψK+, B0 → J/ψK∗0 and B0 →D∗−μ+νμ decay modes with 0.37 fb−1 of data collected in pp(More)
B. Aubert, M. Bona, Y. Karyotakis, J. P. Lees, V. Poireau, E. Prencipe, X. Prudent, V. Tisserand, J. Garra Tico, E. Grauges, L. Lopez, A. Palano, M. Pappagallo, G. Eigen, B. Stugu, L. Sun, G. S. Abrams, M. Battaglia, D. N. Brown, R.N. Cahn, R.G. Jacobsen, L. T. Kerth, Yu. G. Kolomensky, G. Lynch, I. L. Osipenkov, M. T. Ronan, K. Tackmann, T. Tanabe, C.M.(More)
The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions (B) are measured to be B(B+ →ψ(2S)K+) B(B+ → J/ψK+) = 0.594 ± 0.006(stat)± 0.016(syst)± 0.015(Rψ), B(B0 →ψ(2S)K∗0) B(B0 → J/ψK∗0) = 0.476 ± 0.014(stat)± 0.010(syst)±(More)