Reconstruction of charmonium ( ) using Belle detector
| dc.contributor.advisor | Rajeev Kumar | |
| dc.contributor.author | Monica | |
| dc.date.accessioned | 2016-09-30T15:04:28Z | |
| dc.date.available | 2016-09-30T15:04:28Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | Charmonium is a bound state of charm and anti-charm quark. The charmonium states are of great interest both from theoretical and experimental points of view because of their clear experimental signature and great simplification caused by their non-relativistic nature. The charmonium production involves physics at both perturbative and non-perturbative energy scales and provides one of the more manageable processes for QCD calculations. Precise measurements of the inclusive branching fractions for B meson decays to different charmonium states provide sensitive tests of these models. Measurements of B meson decays to charmonium are also important ingredients in the study of b-quark production in hadronic interactions. Reconstruction and study of charmonium mesons in B meson decays is a crucial component of the measurement of time-dependent CP violating asymmetries. Here, inclusive production of (which is reconstructed from its radiative decay mode → J/ ), using a data sample of 386 million events which have been collected at (4S) resonance (bound state of quarks) with Belle detector at KEKB asymmetric energy collider, is studied. A large Monte Carlo sample is used to determine the reconstruction efficiency and parameterization of background. The obtained branching fraction is B(B X) = (0.44 ± 0.01)%. The feed-down contribution from higher charmonium state ( → ) is taken into account and the direct branching fraction is B(B X) (direct) = (0.41 ± 0.01)%. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/79601 | |
| dc.language.iso | en | en_US |
| dc.publisher | Punjab Agricultural University | en_US |
| dc.sub | Physics | |
| dc.subject | Belle detector | en_US |
| dc.these.type | M.Sc | |
| dc.title | Reconstruction of charmonium ( ) using Belle detector | en_US |
| dc.type | Thesis | en_US |
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