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A search for direct CP violation in ...

Ronquest, Michael Christopher.

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A search for direct CP violation in the decay kaon(long, short) going to pion-antipion-gamma photon.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	A search for direct CP violation in the decay kaon(long, short) going to pion-antipion-gamma photon./
作者:	Ronquest, Michael Christopher.
面頁冊數:	355 p.
附註:	Adviser: Bradley Cox.
Contained By:	Dissertation Abstracts International68-10B.
標題:	Physics, Elementary Particles and High Energy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3285315
ISBN:	9780549277613

A search for direct CP violation in the decay kaon(long, short) going to pion-antipion-gamma photon.
Ronquest, Michael Christopher.

A search for direct CP violation in the decay kaon(long, short) going to pion-antipion-gamma photon. - 355 p.

Adviser: Bradley Cox.

Thesis (Ph.D.)--University of Virginia, 2008.

This thesis presents a search for direct CP violation in the decay KL,S → pi+pi -gamma. Observation of direct CP violation is tantamount to observing the breaking of CP symmetry in the weak interaction, as it is this interaction which is responsible for this decay. If present, this phenomena is expected to manifest in direct photon emission from the K L decay. This direct CP violation is expected to be identified by the observation of the direct emission electric dipole (E1) photons. Since this process is small compared to the dominant M1 emission term, as well as the inner bremsstrahlung E1 photon emission process, observing the photon's energy and direction is not enough to isolate the process. Observing the time evolution of the photon emission from decays in a beam of coherent KL and KS affords a better method. However the signal is diluted by the kinematics of the decay, which are dominated by the inner bremsstrahlung process. Combining both methods---observing the momenta of the decay products and the time dependence of the decay, yields a powerful tool with which to search for this rare process.

ISBN: 9780549277613Subjects--Topical Terms:

1019488
Physics, Elementary Particles and High Energy.

A search for direct CP violation in the decay kaon(long, short) going to pion-antipion-gamma photon.
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100 1 $a Ronquest, Michael Christopher. $3 1282227
245 1 2 $a A search for direct CP violation in the decay kaon(long, short) going to pion-antipion-gamma photon.
300 $a 355 p.
500 $a Adviser: Bradley Cox.
500 $a Source: Dissertation Abstracts International, Volume: 68-10, Section: B, page: 6725.
502 $a Thesis (Ph.D.)--University of Virginia, 2008.
520 $a This thesis presents a search for direct CP violation in the decay KL,S → pi+pi -gamma. Observation of direct CP violation is tantamount to observing the breaking of CP symmetry in the weak interaction, as it is this interaction which is responsible for this decay. If present, this phenomena is expected to manifest in direct photon emission from the K L decay. This direct CP violation is expected to be identified by the observation of the direct emission electric dipole (E1) photons. Since this process is small compared to the dominant M1 emission term, as well as the inner bremsstrahlung E1 photon emission process, observing the photon's energy and direction is not enough to isolate the process. Observing the time evolution of the photon emission from decays in a beam of coherent KL and KS affords a better method. However the signal is diluted by the kinematics of the decay, which are dominated by the inner bremsstrahlung process. Combining both methods---observing the momenta of the decay products and the time dependence of the decay, yields a powerful tool with which to search for this rare process.
520 $a Using data collected in 1997 and 1999 by the KTeV fixed-target experiment at Fermi National Accelerator Lab, we apply a theory describing the strength and characteristics of the various processes which are responsible for the decay KL,S → pi+pi -gamma: inner bremsstrahlung, M1 direct photon emission and finally E1 direct photon emission. The E1 direct photon emission process is split into two parts: a part that violates CP symmetry indirectly (mixing type CP violation) and a part that violates CP directly (via decay amplitudes). The data consist of observed decays from KTeV's coherent KL and KS beam, as well as KTeV's pure K L beam.
590 $a School code: 0246.
650 4 $a Physics, Elementary Particles and High Energy. $3 1019488
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710 2 $a University of Virginia. $3 645578
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790 $a 0246
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791 $a Ph.D.
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