Semileptonic Decay of the Neutral B Meson Into a D Meson
Title | Semileptonic Decay of the Neutral B Meson Into a D Meson PDF eBook |
Author | Cristiano Borean |
Publisher | |
Pages | 244 |
Release | 2003 |
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Semileptonic Decay of B Meson to Vector D Meson
Title | Semileptonic Decay of B Meson to Vector D Meson PDF eBook |
Author | Xu Fu |
Publisher | |
Pages | 208 |
Release | 1995 |
Genre | Mesons |
ISBN |
A Study of Neutral B Meson Time Evolution Using Exclusively Reconstructed Semileptonic Decays
Title | A Study of Neutral B Meson Time Evolution Using Exclusively Reconstructed Semileptonic Decays PDF eBook |
Author | |
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Pages | |
Release | 2004 |
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The Standard Model of particle physics describes the fundamental building blocks of the Universe and their basic interactions. The model naturally describes the time evolution of the basic particles, of which lifetime and mixing are two examples. The neutral B meson, consisting of a bottom quark and an oppositely charged down quark, enjoys a lifetime of about 1.5 ps and the special property of mixing with its antiparticle partner, the [bar B][sup 0]. That is, due to second order weak interactions, the B[sup 0] meson can change into a [bar B][sup 0] meson and back again as it evolves through time. The details of this behavior offer an opportunity to closely examine the Standard Model. In this dissertation, I report on a measurement of the lifetime and mixing frequency of the neutral B meson. Using the semileptonic decay channel B[sup 0] [yields] D*[sup -][ell][sup +][bar [nu]][sub [ell]], we select more than 68,000 signal and background candidates from about 23 million B[bar B] pairs collected in 1999-2000 with the BABAR detector located at the Stanford Linear Accelerator Center. The other B in the event is reconstructed inclusively. By constructing a master probability density function that describes the distribution of decay time differences in the sample, we use a maximum likelihood technique to simultaneously extract the B[sup 0] lifetime and mixing parameters with precision comparable to the year 2000 world average. The results are [tau][sub B[sup 0]] = (1.523[sub -0.023][sup +0.024] [+-] 0.022) ps and [Delta]m[sub d] = (0.492 [+-] 0.018 [+-] 0.013) ps[sup -1]. The statistical correlation coefficient between [tau][sub B[sup 0]] and [Delta]m[sub d] is -0.22. I describe in detail several cutting-edge strategies this analysis uses to study these phenomena, laying important groundwork for the future. I also discuss several extensions of this work to include possible measurements of higher order parameters such as [Delta][Lambda][sub d].
Semileptonic B Meson to D-star Meson Decay
Title | Semileptonic B Meson to D-star Meson Decay PDF eBook |
Author | Mauricio Garcia-Sciveres |
Publisher | |
Pages | 338 |
Release | 1994 |
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Semileptonic B Meson to Excited Charm Meson Decay
Title | Semileptonic B Meson to Excited Charm Meson Decay PDF eBook |
Author | Suzanne Lorraine Jones |
Publisher | |
Pages | 216 |
Release | 1996 |
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Search for Semileptonic Decays in the B Meson Into the [Lambda]+[subscript C] Baryon
Title | Search for Semileptonic Decays in the B Meson Into the [Lambda]+[subscript C] Baryon PDF eBook |
Author | Tomohiko Tanabe |
Publisher | |
Pages | 248 |
Release | 2009 |
Genre | |
ISBN |
Measurement of Neutral B Meson and Charged B Meson Lifetimes Using Semileptonic Decays at CDF
Title | Measurement of Neutral B Meson and Charged B Meson Lifetimes Using Semileptonic Decays at CDF PDF eBook |
Author | David K. Clark |
Publisher | |
Pages | 93 |
Release | 2010 |
Genre | Lepton-hadron interactions |
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