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First observation of the direct detection of positive D-meson into anti-K-long + 3 pions and negative D-meson into K-long + 3 pions with the Fermilab FOCUS experiment
dc.contributor.advisor | Johns, Will E. | |
dc.contributor.author | Stewart, Cameron | |
dc.date.accessioned | 2014-08-06T18:00:03Z | |
dc.date.available | 2014-08-06T18:00:03Z | |
dc.date.issued | 2014-04 | |
dc.identifier.uri | http://hdl.handle.net/1803/6630 | |
dc.description.abstract | In this thesis the decays of positive D-mesons into neutral anti-K-mesons and
three charged pions and of negative D-mesons into neutral K-mesons and three
charged pions are reconstructed in both long and short neutral K-meson states.
The data were taken with the Fermilab FOCUS spectrometer. This constitutes the
first observation of these decays in the long K-meson mode. We detail
the cuts necessary to find the branching ratio for the K-long to K-short
modes for both positive and negative D-mesons, show that the ratio is 0.89,
and detail further work that remains to be done. The K-long mode is
reconstructed using the D-meson flight direction, the direction of the
charged pions, and the energy deposited in the hadron calorimeter.
The K-short decay is reconstructed directly using tracking information in
the pi plus - pi minus decay mode. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Vanderbilt University. Department of Physics and Astronomy | en_US |
dc.rights | CC0 1.0 Universal | * |
dc.rights.uri | http://creativecommons.org/publicdomain/zero/1.0/ | * |
dc.subject | D-meson branching ratio | en_US |
dc.subject | K-long | en_US |
dc.subject | K-short | en_US |
dc.subject | FOCUS experiment | en_US |
dc.subject.lcsh | Mesons -- Decay | en_US |
dc.subject.lcsh | Mesons | en_US |
dc.subject.lcsh | Kaons | en_US |
dc.subject.lcsh | Pions | en_US |
dc.subject.lcsh | Fermi National Accelerator Laboratory | en_US |
dc.title | First observation of the direct detection of positive D-meson into anti-K-long + 3 pions and negative D-meson into K-long + 3 pions with the Fermilab FOCUS experiment | en_US |
dc.type | Thesis | en_US |
dc.description.college | College of Arts and Science | en_US |
dc.description.department | Department of Physics and Astronomy | en_US |
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