Measurement of the CP Violation Parameter sin 2$\beta$

Kelley, Kenneth Francis

doi:10.2172/3124

Measurement of the CP Violation Parameter sin 2 $\beta$

Kenneth Francis Kelley
(
- MIT
)

1999

267 pages

Supervisor:

Paraskevas A. Sphicas

Thesis: PhD

MIT

(1999)

DOI:

10.2172/3124

Report number:

FERMILAB-THESIS-1998-40,
CDF-THESIS-BOTTOM-PUBLIC-4767

Experiments:

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Abstract:

This thesis presents a measurement of the time-dependent asymmetry in the rate of

\bar{B}^0_d

versus

B^0_d

decays to

J = \phi K^0_S

. In the context of the Standard Model this is interpreted as a measurement of the CP violation parameter sin(

2\beta

). A total of 198

\pm

17

B^0_d = \bar{B}^0_d

decays were observed in

p\bar{p}

collisions at

\sqrt{s}

= 1.8 TeV by the CDF detector at the Fermilab Tevatron. The initial B avor (whether

B^0

or

\bar{B}^0

) is determined by a same-side avor tagging technique. The analysis results in sin(

2\beta

) = 1.8

\pm

1.1 (stat:)

\pm

0.3 (syst:). This analysis demonstrates the feasibility of studying CP violation in the

B^0

or

\bar{B}^0

system at a hadron collider. By applying the methods used in this analysis, future, higher-statistics experiments should be able to tightly constrain the parameters of the Standard Model. Portions of this analysis have been submitted for Publication. The article \Measurement of the

B^0_d \bar{B}^0_d

avor oscillation frequency and study of same side flavor tagging of B mesons in

p\bar{p}

collisions" has been submitted to Phys. Rev. D; the preprint for this article is FERMILAB-Pub-98/188-E. The article \Measurement of the CP-Violation Parameter sin(

2\beta

) in

B^0_d = \bar{B}^0_d \to J = \phi K^0_S

Decays" has been submitted to Phys. Rev. Lett.; the preprint for this article is FERMILAB-Pub-98/189-E.

CDF
thesis

References(56)

Figures(0)

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Measurement of the CP Violation Parameter sin 2β\betaβ

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Measurement of the CP Violation Parameter sin 2 $\beta$