A Measurement Of The Branching Ratio Of The 0 Dalitz Decay Using K L U2192 3 0 Decays From Ktev

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A Measurement Of The Branching Ratio Of The 0 Dalitz Decay Using K L U2192 3 0 Decays From Ktev

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Author :
language : en
Publisher:
Release Date : 2007

A Measurement Of The Branching Ratio Of The 0 Dalitz Decay Using K L U2192 3 0 Decays From Ktev written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

The authors present a measurement of B(?0 → e+e-?)/B(?0 → ??) using data taken in 1999 by the E832 KTeV experiment at Fermilab. The ?0s were produced by KL decays in flight that are fully reconstructed. They find 63,693 KL → 3?0 → ?? ?? e+e-? decays in KTeV data (an increase of a factor of ̃20 in event statistics over previous experiments), and normalize to KL → 3?0 → 6?, to extract B(?0 → e+e-?, me+e- > 15 MeV/c2/sup)/B(?sup0 → ??) = (3.920 ± 0.016 ± 0.036) x 10sup-3/sup, where the first error is statistical and the second is systematic. Using the Mikaelian and Smith prediction for the esup+/supesup-/sup mass spectrum as implemented in the KTeV Monte Carlo to correct to the full esup+/supesup-/sup mass range yields B(?sup0/sup → esup+/supesup-/sup?)/B(?sup0

A Measurement Of The Branching Ratio Of The Pi 0 Dalitz Decay Using K L 2 3 Pi 0 Decays From Ktev

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Author :
language : en
Publisher:
Release Date : 2007

A Measurement Of The Branching Ratio Of The Pi 0 Dalitz Decay Using K L 2 3 Pi 0 Decays From Ktev written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

The authors present a measurement of B([pi]0 2!e+e-[gamma])/B([pi]0 2![gamma][gamma]) using data taken in 1999 by the E832 KTeV experiment at Fermilab. The [pi]0s were produced by KL decays in flight that are fully reconstructed. They find 63,693 KL 2!3[pi]0 2![gamma][gamma] [gamma][gamma] e+e-[gamma] decays in KTeV data (an increase of a factor of ~ 20 in event statistics over previous experiments), and normalize to KL 2!3[pi]0 2!6[gamma], to extract B([pi]0 2!e+e-[gamma], me+e-> 15 MeV/c2

A Measurement Of The Branching Ratio Of The Pi 0 Dalitz Decay Using K Subscript L Arrow 3 Pi 0 Decays From Ktev

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Author : Erin E. Abouzaid
language : en
Publisher:
Release Date : 2007

A Measurement Of The Branching Ratio Of The Pi 0 Dalitz Decay Using K Subscript L Arrow 3 Pi 0 Decays From Ktev written by Erin E. Abouzaid and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Kaons categories.

Measuring The Branching Ratio Of The Rare Decay 0 U2192 E E

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Author :
language : en
Publisher:
Release Date : 2006

Measuring The Branching Ratio Of The Rare Decay 0 U2192 E E written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

A precise branching ratio measurement of the rare decay ?0→e+e- has been made. The measurement was made with the rare kaon decay experiment KTeV at Fermilab where the source of ?0s was KL → ?0?0?0 decaying in flight. A total of 794 fully reconstructed KL → 3?0 events consistent with two of the intermediate ?0s decaying into ?? and one into e+e- were collected. An estimated 53.2 ± 11.0 of these events were expected to be background. Normalizing to the ?0 Dalitz decay they found Br(?0 → e+e-, (me+e-/m ?0)2 > 0.95) = (6.44 ± 0.25(stat) ± 0.22(syst)) x 10-8 where internal radiation, ?0 → e+e-(?), was limited by the requirement (me+e-/m?0)2 > 0.95 which separated it from the tree level Dalitz decay, ?0 → e+e-?.

Study Of The Rare Decay Kl U2192 0 At Ktev

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Author :
language : en
Publisher:
Release Date : 2007

Study Of The Rare Decay Kl U2192 0 At Ktev written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

The authors study on the rare decay KL → ?0??, measure aV, and branching ratio by analyzing 96, 97 and 99 data. The measurements were taken by KTeV at Fermi National Accelerator Laboratory. After all cuts, they have 1982 KL → ?0?? candidate. The background level is estimated as 30%. KL → ?0?? branching ratio is measured as (1.29 ± 0.03(stat) ± 0.04(sys)) x 10-6. By using D'Ambrosio's theory to fit aV, aV = -(-0.31 ± 0.05(stat) ± 0.07(sys)).

Measuring The Branching Ratio Of The Rare Decay Pi0 E E

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Author : Rune Niclasen
language : en
Publisher:
Release Date : 2006

Measuring The Branching Ratio Of The Rare Decay Pi0 E E written by Rune Niclasen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

A precise branching ratio measurement of the rare decay {pi}{sup 0} {yields} e{sup +}e{sup -} has been made. The measurement was made with the rare kaon decay experiment KTeV at Fermilab where the source of {pi}{sup 0}s was K{sub L} {yields} {pi}{sup 0}{pi}{sup 0}{pi}{sup 0} decaying in flight. A total of 794 fully reconstructed K{sub L} {yields} 3{pi}{sup 0} events consistent with two of the intermediate {pi}{sup 0}s decaying into {gamma}{gamma} and one into e{sup +}e{sup -} were collected. An estimated 53.2 {+-} 11.0 of these events were expected to be background. Normalizing to the {pi}{sup 0} Dalitz decay they found Br({pi}{sup 0} {yields} e{sup +}e{sup -}, (m{sub e{sup +}e{sup -}}/m{sub {pi}{sup 0}}){sup 2}> 0.95) = (6.44 {+-} 0.25(stat) {+-} 0.22(syst)) x 10{sup -8} where internal radiation, {pi}{sup 0} {yields} e{sup +}e{sup -}({gamma}), was limited by the requirement (m{sub e{sup +}e{sup -}}/m{sub {pi}{sup 0}}){sup 2}> 0.95 which separated it from the tree level Dalitz decay, {pi}{sup 0} {yields} e{sup +}e{sup -}P{gamma}.

Measurement Of Neutral B Decay Branching Fractions To K Sub S Sup 0 Pi Sup Pi Sup Final States

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Author :
language : en
Publisher:
Release Date : 2004

Measurement Of Neutral B Decay Branching Fractions To K Sub S Sup 0 Pi Sup Pi Sup Final States written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

The branching fractions for B[sup 0] --> K[sup 0][pi][sup +][pi][sup -], B[sup 0] --> K*[sup +][pi][sup -] and B[sup 0] --> D[sup -]( --> K[sub s][sup 0][pi][sup -])[pi][sup +] decaying to a K[sub s][sup 0][pi][sup +][pi][sup -] state have been measured and agree with previous measurements. The direct CP violating parameter A[sub K*[pi]] was measured for the decay B[sup 0] --> K*[sup +][pi][sup -] and is in agreement with the CLEO measurement, with no evidence of CP violation with the statistics used. Using larger datasets, one can extract amplitudes and relative phases of the resonant contributions to the Dalitz plot, with the possibility to observe new B-meson decays.

Measurement Of The Branching Ratio Of The Decay K 0 L My My

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Author : T. Inagaki
language : en
Publisher:
Release Date : 1991

Measurement Of The Branching Ratio Of The Decay K 0 L My My written by T. Inagaki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.

Measurement Of The Branching Ratios For The Decays Tau Approaches Hadron Pi 0 Upsilon And Tau Becomes Hadron Pi 0 Pi 0 Upsilon

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Author : CRYSTAL BALL Collaboration
language : en
Publisher:
Release Date : 1991

Measurement Of The Branching Ratios For The Decays Tau Approaches Hadron Pi 0 Upsilon And Tau Becomes Hadron Pi 0 Pi 0 Upsilon written by CRYSTAL BALL Collaboration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.

Measurement Of The Branching Ratio And The Form Factor Of The Decay K L 258 E

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Author : Matthew David Needham
language : en
Publisher:
Release Date : 1999

Measurement Of The Branching Ratio And The Form Factor Of The Decay K L 258 E written by Matthew David Needham and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.