Download or read book 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 published by . This book was released on 2007 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book 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 published by . This book was released on 2007 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Measurement of the Branching Ratio of the 0 Dalitz Decay Using K L u2192 3 0 Decays from KTeV written by and published by . This book was released on 2007 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Measuring the Branching Ratio of the Rare Decay Pi0 E E written by Rune Niclasen and published by . This book was released on 2006 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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}.

Download or read book A Measurement of the Branching Ratio KL0 Til 2 Pi0 written by William P. Oliver and published by . This book was released on 1969 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BCP4 written by A. Ichiro Sanda and published by World Scientific. This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers the first strong evidence of the existence of CP violation in neutral B decays extracted from sophisticated B factories in the US and Japan. It also holds out the expectation of rare B decays and D, K physics in the near future. In addition, new physics beyond the Standard Model is described. Both experimental and theoretical points of view are given.

Download or read book Measurement of the branching ratio K L o 2 pi o to K L o 3 pi o written by H. Faissner and published by . This book was released on 1970 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Physics written by and published by . This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Measurement of the Branching Ratio KL 2 pi KL 3 pi written by William P. Oliver and published by . This book was released on 1969 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 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 published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Neutral B Decay Branching Fractions to K sub S sup 0 pi sup pi sup Final States written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book CPconf2000 written by Mauro Savrié and published by . This book was released on 2001 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of the Branching Ratios for the Decays tau Hadron pi 0 neutrino and tau Hadron pi 0 pi 0 neutrino written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Study of D0 K PI PI0 Decays with Dalitz Plots written by and published by . This book was released on 2002 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle physicists study the smallest particles and most basic rules of their interactions in humankind's current scope. The Charm Analysis Working Group (CWG) of the BaBar Collaboration studies decays involving the charm quark. They currently study mixing in D decays, an interesting and poorly understood phenomenon in current physics models. We, as part of the CWG, investigated the plausibility of using Dalitz plots and the BaBar analysis framework to study mixing in Wrong Sign (WS) D° 2!K[pi][pi]° decays. Others in the CWG have studied mixing in the 2-body decay, D° 2!K[pi]. The 3-body decay analyzed with the RooFitDalitz analysis package and Dalitz plots provides more information and another way of separating Doubly Cabibbo Suppressed Decays (DCSD) from mixing--which share the same end products. Through doing many simulations, we have demonstrated the usefulness of this approach. We selected D° 2!K[pi][pi]° events from Simulation Production run No. 4 (SP4) and BaBar's run 1 and run 2. We made Dalitz plots with this data. Now that we better understand Dalitz plots and software, we plan to select WS D° 2!K[pi][pi]° events and perform rate fits as discussed in BaBar Analysis Document (BAD) No. 443, as well as fits for several different decay times and resonances, in order to further distinguish DCSD from mixing.

Download or read book Measurement of the Branching Ratio KL0 2 pi 0 to KL0 3 pi 0 written by Helmut Faissner and published by . This book was released on 1970 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the K10 Branching Ratio written by William A. Cooper and published by . This book was released on 1971 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Measurement of the Branching Ratio of K pi mu mu Decays in the Hyper CP Experiment written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large samples of hyperon and kaon decays were collected with the Hyper CP spectrometer during two fixed-target runs at Fermilab. Based on an analysis of 110 million K pm decays from the 1997 data sample we present a branching ratio for K pm right arrow pi pm mu+ mu-. This is the first observation of K- right arrow pi- mu+ mu- decay.