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Rare Decay Modes of the Kaon

Rare Decay Modes of the Kaon
Author: James Roger Aggson
Publisher:
Total Pages: 90
Release: 1970
Genre: Mesons
ISBN:

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Kaon Physics

Kaon Physics
Author: Jonathan L. Rosner
Publisher: University of Chicago Press
Total Pages: 654
Release: 2001-01-15
Genre: Science
ISBN: 9780226902289

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In 1947, the first of what have come to be known as "strange particles" were detected. As the number and variety of these particles proliferated, physicists began to try to make sense of them. Some seemed to have masses about 900 times that of the electron, and existed in both charged and neutral varieties. These particles are now called kaons (or K mesons), and they have become the subject of some of the most exciting research in particle physics. Kaon Physics at the Turn of the Millennium presents cutting-edge papers by leading theorists and experimentalists that synthesize the current state of the field and suggest promising new directions for the future study of kaons. Topics covered include the history of kaon physics, direct CP violation in kaon decays, time reversal violation, CPT studies, theoretical aspects of kaon physics, rare kaon decays, hyperon physics, charm: CP violation and mixing, the physics of B mesons, and future opportunities for kaon physics in the twenty-first century.


SEARCH FOR THE RARE KAON DECAY K →?+?{bar {nu}}

SEARCH FOR THE RARE KAON DECAY K →?+?{bar {nu}}
Author:
Publisher:
Total Pages: 194
Release: 2003
Genre:
ISBN:

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This thesis describes the search for the rare decay K →?+?{bar {nu}} in the pion momentum region 140 MeV/c ≤ P{sub {pi}+} ≤ 195 MeV/c. This is a Flavor Changing Neutral Current (FCNC) decay which is forbidden to the first order in the Standard Model (SM) by the GIM mechanism. However, this decay mode is allowed in the second order by two Z-Penguin and one box diagram and is expected to have a branching ratio of (0.72 ± 0.21) x 10−1°. This decay mode is sensitive to the coupling of top to down quark and therefore a measurement of the branching ratio for this decay mode provides a measurement of the Cabibbo-Kobayashi-Maskawa matrix element V{sub td}. The recent observation of two events in the pion momentum region 211 MeV/c ≤ P{sup {pi}+} ≤ 229 MeV/c estimates a branching ratio of 1.57{sub -0.82}{sup +1.75} x 10−1° for the same decay mode. We have extended the search for this decay to the lower pion momentum region. Data collected by the Experiment E787 at Brookhaven National Laboratory during the 1996 and 1997 run were analyzed in this thesis.


Rare Decays of Light Mesons

Rare Decays of Light Mesons
Author: Benjamin Mayer
Publisher: Atlantica Séguier Frontières
Total Pages: 250
Release: 1990
Genre: CP violation (Nuclear physics)
ISBN: 9782863320884

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SEARCH FOR THE RARE KAON DECAY K[sup+][yields][pi][sup+][nu][bar[nu].

SEARCH FOR THE RARE KAON DECAY K[sup+][yields][pi][sup+][nu][bar[nu].
Author:
Publisher:
Total Pages:
Release: 2003
Genre:
ISBN:

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This thesis describes the search for the rare decay K[sup+][yields][pi][sup+][nu][bar[nu]] in the pion momentum region 140 MeV/c[le] P[sub[pi][sup+]][le] 195 MeV/c. This is a Flavor Changing Neutral Current (FCNC) decay which is forbidden to the first order in the Standard Model (SM) by the GIM mechanism. However, this decay mode is allowed in the second order by two Z-Penguin and one box diagram and is expected to have a branching ratio of (0.72[+-] 0.21) x 10[sup -10]. This decay mode is sensitive to the coupling of top to down quark and therefore a measurement of the branching ratio for this decay mode provides a measurement of the Cabibbo-Kobayashi-Maskawa matrix element V[sub td]. The recent observation of two events in the pion momentum region 211 MeV/c[le] P[sup[pi][sup+]][le] 229 MeV/c estimates a branching ratio of 1.57[sub -0.82][sup+1.75] x 10[sup -10] for the same decay mode. We have extended the search for this decay to the lower pion momentum region. Data collected by the Experiment E787 at Brookhaven National Laboratory during the 1996 and 1997 run were analyzed in this thesis.


Dynamics of the Standard Model

Dynamics of the Standard Model
Author: John F. Donoghue
Publisher: Cambridge University Press
Total Pages: 599
Release: 2023-01-31
Genre: Science
ISBN: 1009291009

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This 2014 edition, now OA, provides a detailed and practical account of the Standard Model of particle physics.


Rare Decays

Rare Decays
Author:
Publisher:
Total Pages: 13
Release: 1990
Genre:
ISBN:

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Rare decay experiments have made significant advances in the last several years. Limits on lepton number violating decays of kaons have been tightened. Large samples of strangeness changing neutral current kaon decays have been collected. For several suppressed processes, discovery windows for new physics have been substantially narrowed. Opportunities for detecting direct CP-violation have been changed by the observation of a new background to one decay mode and the prospects of high statistics studies of another process. 23 refs., 14 figs., 2 tabs.