A NEW MEASUREMENT OF CP VIOLATION PARAMETER Epsilon-prime

A NEW MEASUREMENT OF CP VIOLATION PARAMETER Epsilon-prime PDF Author:
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Languages : en
Pages : 4

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A NEW MEASUREMENT OF CP VIOLATION PARAMETER Epsilon-prime

A NEW MEASUREMENT OF CP VIOLATION PARAMETER Epsilon-prime PDF Author:
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Category :
Languages : en
Pages : 4

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A New Measurement of CP Violation Parameter. Var Epsilon. Prime /. Var Epsilon

A New Measurement of CP Violation Parameter. Var Epsilon. Prime /. Var Epsilon PDF Author:
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Category :
Languages : en
Pages : 4

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Precision Measurement of the Direct CP Violation Parameter. Var Epsilon. Prime

Precision Measurement of the Direct CP Violation Parameter. Var Epsilon. Prime PDF Author:
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Category :
Languages : en
Pages : 8

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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.

Measurements of the Direct CP-violating Parameter Re([epsilon] [prime]/[epsilon]) and the Kaon Sector Parameters [delta] [mu], [tau] [subscript] S, and [phi] [subscript]+-

Measurements of the Direct CP-violating Parameter Re([epsilon] [prime]/[epsilon]) and the Kaon Sector Parameters [delta] [mu], [tau] [subscript] S, and [phi] [subscript]+- PDF Author: James Anthony Graham
Publisher:
ISBN:
Category : CP violation (Nuclear physics)
Languages : en
Pages : 540

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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]

A High Sensitivity Search for CP Violating Rare K[sub L] Decays and Precision Measurement of the Direct CP Violation Parameter [epsilon][prime] PDF Author:
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Category :
Languages : en
Pages : 8

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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.

Latest Experimental Information On[epsilon][prime]/[epsilon].

Latest Experimental Information On[epsilon][prime]/[epsilon]. PDF Author:
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Category :
Languages : en
Pages :

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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.

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.

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. PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8

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Book Description
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 Precise Measurement of the CP-violation Parameter Re([epsilon] '/ [epsilon]) and Other Kaon Decay Parameters

A Precise Measurement of the CP-violation Parameter Re([epsilon] '/ [epsilon]) and Other Kaon Decay Parameters PDF Author: Lawrence Kent Gibbons
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ISBN:
Category : CP violation (Nuclear physics)
Languages : en
Pages : 726

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Epsilon Prime

Epsilon Prime PDF Author:
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Category :
Languages : en
Pages :

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The authors update the current status for the measurement of the direct-CP violation parameters[epsilon][prime]/[epsilon] in the KTeV experiment at Fermilab. Substantial statistics have been accumulated during the 1996-7 run and 1999 run for both[epsilon][prime]/[epsilon] and rare K[sub L] decay searches. The first KTeV result on[epsilon][prime]/[epsilon] published last year was Re([epsilon][prime]/[epsilon])= (28.0[+-] 4.1) x 10[sup[minus]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([epsilon][prime]/[epsilon])= (19.3[+-] 3.6) x 10[sup[minus]4] (with S= 1:49), more than 5[sigma] 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][r-arrow][mu][sup+][mu][sup[minus]][gamma] using 1997 data are also presented. We find that BR(K[sub L][r-arrow][mu][sup+][mu][sup[minus]][gamma])= (3.66[+-] 0.04[sub stat][+-] 0.07[sub syst]) x 10[sup[minus]7]. The form factor parameter[alpha][sub K]* is measured to be[alpha][sub K]*=[minus]0.157[sub[minus]0.027][sup+0.025]. We make the first measurement of the parameter[alpha] from the D'Ambrosio, Isidori, and Portoles form factor, finding[alpha]=[minus]1.53[+-] 0.09. This measurement of[alpha] limits the CKM parameter[rho]>[minus]0.2.

Search for Direct CP Violation in K Decays by a Measurement of Epsilon Prime

Search for Direct CP Violation in K Decays by a Measurement of Epsilon Prime PDF Author: Joel Kevin Black
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Category :
Languages : en
Pages :

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