Precision Measurement Of The Direct Cp Violation Parameter Var Epsilon Var Epsilon Via The Four K 2 Decay Modes And A High Sensitivity Search For Cp Violating Rare K Sub L Decays Task J Progress Report May 1 1991 April 30 1992

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Government Reports Annual Index

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Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Government reports announcements & index categories.

Government Reports Announcements Index

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Release Date : 1993-12

Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-12 with Science categories.

Precision Measurement Of The Direct Cp Violation Parameter Var Epsilon Var Epsilon Via The Four K 2 Decay Modes And A High Sensitivity Search For Cp Violating Rare K Sub L Decays Task J Progress Report May 1 1991 April 30 1992

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Precision Measurement Of The Direct Cp Violation Parameter Var Epsilon Var Epsilon Via The Four K 2 Decay Modes And A High Sensitivity Search For Cp Violating Rare K Sub L Decays Task J Progress Report May 1 1991 April 30 1992 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.

This report discusses the progress on the measurement of the direct CP violation parameter {var_epsilon}′/{var_epsilon} and the rare KL decay. The progress has been as follows: (A) results from the complete E731 data set which was collected in the 1987/88 fixed target run; preparations for and the taking of the data for (B) E773 (CPT symmetry test) and (C) E799 (rare decay study); and finally (D) R&D for a new detector to further study {var_epsilon}′/{var_epsilon} and rate decays.

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Epsilon Prime Epsilon Via The Four K Yields 2 Pi Decay Modes Task J

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A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Epsilon Prime Epsilon Via The Four K Yields 2 Pi Decay Modes Task J written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

Fermilab experiments E731, E773, E799, and E832 are a series of experiments to investigate the physics of CP violation, CPT violation, and rare decays of the neutral kaon system. E731 finished data taking in 1988, during past year the full data set analysis was completed and yielded ([var epsilon][prime]/[var epsilon])[sub 2[pi]]=(7.4 [plus minus] 5.2 [stat] [plus minus] 2.9 [syst]) [times] 10[sup [minus]4] . The value favors a high top ark mass value within the Standard Model. E773 tests CPT violation by determining ([Delta][phi])[sub 2[pi]] with an accuracy of about 0.5[sup 0]. Data were taken during the last Fermilab Fixed Target run period between September and November 1991. It is anticipated the data analysis will be finished within a year. E799, with the primary goal of observing direct Cp Violation via searching for the rare decay K[sub L][yields] [pi][sup 0] l [sup +]l[sup [minus]] (where l = e, [mu] [nu]) took test data between November 1991 and January 1992 (Phase 1). Some preliminary results are shown here. E799 (Phase II) and E832 (a follow up experiment of E731) are scheduled to take data after the current Fermilab collider run with a new facility and detector.

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Via The Four K 2 Decay Modes Task J Progress Report May 1 1992 April 30 1993

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Release Date : 1993

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Via The Four K 2 Decay Modes Task J Progress Report May 1 1992 April 30 1993 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

Fermilab experiments E731, E773, E799, and E832 are a series of experiments to investigate the physics of CP violation, CPT violation, and rare decays of the neutral kaon system. E731 finished data taking in 1988, during past year the full data set analysis was completed and yielded ({var_epsilon}′/{var_epsilon}){sub 2?}=(7.4 ± 5.2 [stat] ± 2.9 [syst]) × 10−4 . The value favors a high top ark mass value within the Standard Model. E773 tests CPT violation by determining (??){sub 2{pi}} with an accuracy of about 0.5°. Data were taken during the last Fermilab Fixed Target run period between September and November 1991. It is anticipated the data analysis will be finished within a year. E799, with the primary goal of observing direct Cp Violation via searching for the rare decay K{sub L}→ {pi}° l l− (where l = e,??) took test data between November 1991 and January 1992 (Phase 1). Some preliminary results are shown here. E799 (Phase II) and E832 (a follow up experiment of E731) are scheduled to take data after the current Fermilab collider run with a new facility and detector.

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Epsilon Prime

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Author :
language : en
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Release Date : 1993

A High Sensitivity Search For Cp Violating Rare K Sub L Decays And Precision Measurement Of The Direct Cp Violation Parameter Epsilon Prime written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

Fermilab experiments E731, E773, E799, and E832 are a series of experiments to investigate the physics of CP violation, CPT violation, and rare decays of the neutral kaon system. E731 finished data taking in 1988, during past year the full data set analysis was completed and yielded ([var epsilon][prime]/[var epsilon])[sub 2[pi]]=(7.4 [plus minus] 5.2 [stat] [plus minus] 2.9 [syst]) [times] 10[sup [minus]4] . The value favors a high top ark mass value within the Standard Model. E773 tests CPT violation by determining ([Delta][phi])[sub 2[pi]] with an accuracy of about 0.5[sup 0]. Data were taken during the last Fermilab Fixed Target run period between September and November 1991. It is anticipated the data analysis will be finished within a year. E799, with the primary goal of observing direct Cp Violation via searching for the rare decay K[sub L][yields] [pi][sup 0] l [sup +]l[sup [minus]] (where l = e, [mu] [nu]) took test data between November 1991 and January 1992 (Phase 1). Some preliminary results are shown here. E799 (Phase II) and E832 (a follow up experiment of E731) are scheduled to take data after the current Fermilab collider run with a new facility and detector.

Precision Measurement Of The Direct Cp Violation Parameter Var Epsilon Prime

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language : en
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Release Date : 1992

Precision Measurement Of The Direct Cp Violation Parameter Var Epsilon Prime written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.

This report discusses the progress on the measurement of the direct CP violation parameter {var epsilon}(prime)/{var epsilon} and the rare KL decay. The progress has been as follows: (A) results from the complete E731 data set which was collected in the 1987/88 fixed target run; preparations for and the taking of the data for (B) E773 (CPT symmetry test) and (C) E799 (rare decay study); and finally (D) R D for a new detector to further study {var epsilon}(prime)/{var epsilon} and rate decays.

A New Measurement Of Cp Violation Parameter Var Epsilon Prime Var Epsilon

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Release Date : 1990

A New Measurement Of Cp Violation Parameter Var Epsilon Prime Var Epsilon written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Latest Experimental Information On Epsilon Prime Epsilon

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Release Date : 2001

Latest Experimental Information On Epsilon Prime Epsilon written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

The authors review the latest experimental results in search for direct CP-violation by measuring the CP-violating parameters Re([epsilon][prime]/[epsilon]) in neutral kaon decays. The recent result from Fermilab-KTeV Re([epsilon][prime]/[epsilon])= (28.0[+-] 4.1) x 10[sup[minus]4], and the new preliminary result from CERN-NA48 Re([epsilon][prime]/[epsilon])= (14.0[+-] 4.3) x 10[sup[minus]4], are presented. Both experiments, though using very different techniques, have now performed very well by collecting millions of events for all four relevant decay modes of K[sub L, S] to[pi][sup+][pi][sup[minus]] and[pi][sup 0][pi][sup 0] simultaneously. The current world average on this important measurement is Re([epsilon][prime]/[epsilon])= 19.3[+-] 10[sup[minus]4] with a[chi][sup 2]/ndf= 11.1/5, establishing the existence of direct CP-violation. The experimental status of such crucial measurements and the future prospects are also discussed here.

Epsilon Prime Epsilon And Rare Kl Decays From Ktev Experiment

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language : en
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Release Date : 2001

Epsilon Prime Epsilon And Rare Kl Decays From Ktev Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

The authors update the current status for the measurement of the direct-CP violation parameters????????/? in the KTeV experiment at Fermilab. Substantial statistics have been accumulated during the 1996-7 run and 1999 run for both????????/? and rare K{sub L} decay searches. The first KTeV result on????????/? published last year was Re(????????/?) = (28.0 ± 4.1) x 10{sup −4} based on the 23% data from 1996-7 run. Combining with the previous E731, NA31 and the recent preliminary NA48 results, the grand average is Re(????????/?) = (19.3 ± 3.6) x 10{sup −4} (with S = 1:49), more than 5? above zero. More data from both KTeV and NA48 after completing the analysis will further improve the precision of this measurement in the near future and hopefully further improve the agreement. New results on the branching ratio and form factor measurements of K{sub L} →??{sup −}? using 1997 data are also presented. We find that BR(K{sub L} →?+?{sup −}?) = (3.66 ± 0.04{sub stat} ± 0.07{sub syst}) x 10{sup −7}. The form factor parameter?{sub K}* is measured to be?{sub K}* = −0.157{sub −0.027}{sup +0.025}. We make the first measurement of the parameter? from the D'Ambrosio, Isidori, and Portoles form factor, finding? = −1.53 ± 0.09. This measurement of? limits the CKM parameter?> −0.2.