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 --> [pi]0[pi]0[Upsilon](1S) PDF Online Free](https://books.google.com/books/content/images/frontcover/lHifHAAACAAJ?fife=w200-h370)
Author : David Michael Gelphman
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (818 download)
Download or read book Measurement of the Decay [Upsilon](2S) --> [pi]0[pi]0[Upsilon](1S) written by David Michael Gelphman and published by . This book was released on 1985 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
 Goes to [pi]0[pi]0[upsilon](1S) PDF Online Free](https://books.google.com/books/content/images/frontcover/PIYgAQAAIAAJ?fife=w200-h370)
Author : David Michael Gelphman
Publisher :
ISBN 13 :
Total Pages : 254 pages
Book Rating : 4.F/5 ( download)
Download or read book Measurement of the Decay [upsilon](2S) Goes to [pi]0[pi]0[upsilon](1S) written by David Michael Gelphman and published by . This book was released on 1985 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the Decay UPSILON(2S). --]. Pi. °. Pi. °UPSILON(1S). PDF Online Free](https://books.google.com/books/content/images/frontcover/2AyfAQAACAAJ?fife=w200-h370)
Download or read book Measurement of the Decay UPSILON(2S). --]. Pi. °. Pi. °UPSILON(1S). written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The hadronic transitions UPSILON(2S) .-->. .pi.°.pi. UPSILON(1S) .-->. .gamma gamma gamma gamma.ll− (l = .mu. or e) are investigated using the Crystal Ball detector. The analysis is based on 193,000 UPSILON(2S) events produced at the DORIS II ee− storage ring from November 1982 to February 1984. We observe 44 events with a muon pair and 46 events with an electron pair in the final state. The signals in both channels are relatively background free. Assuming lepton universality, we average the results for the two channels and obtain the product branching ratio B(UPSILON(2S) .-->. .pi.°.pi.°UPSILON(1S)) x B/sub ll/(UPSILON(1S)) = (2.3 +- 0.3 +- 0.3) x 10−3 where the first error is statistical and the second is systematic. Using the present world average value of B/sub ll/(UPSILON(1S)) = (2.9 +- 0.3)% we derive a branching ratio B(UPSILON(2S) .-->. .pi.°.pi.°UPSILON(1S)) = (8.0 +- 1.5)% where the statistical and systematic errors have been added in quadrature. This result is compared with previous results for the charged pion transitions UPSILON(2S) .-->. .pi.+.pi.−UPSILON(1S) and with the expectation from theory. We have also investigated the mass spectrum M/sub .pi.°.pi.°/ resulting from these decays and find a peaking toward high masses not accounted for the phase space alone. Fits to the .pi.°.pi.° mass spectrum are in quantitative agreement with previous results for the .pi.+.pi.− transitions. Angular distribution for the .pi.°.pi.° system and its decay products are presented in reference frames appropriate for analyzing the spin of the .pi.°.pi.° system, even if the initial UPSILON(1S) and the di-pion system are emitted in a relative S-wave. We find the decay distributions to be consistent with those expected for a spin zero di-pion system emitted in a relative S-wave with the UPSILON(1S).
![Download Measurement of the Decay of the [Upsilon] (1S) and [Upsilon] (2S) Resonances to Muon Pairs PDF Online Free](https://books.google.com/books/content/images/frontcover/Pp11zQEACAAJ?fife=w200-h370)
Download or read book Measurement of the Decay of the [Upsilon] (1S) and [Upsilon] (2S) Resonances to Muon Pairs written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
 [approaches] [Pi Pi Upsilon](1S) PDF Online Free](https://books.google.com/books/content/images/frontcover/t_OGuAAACAAJ?fife=w200-h370)
Author : CRYSTAL BALL Collaboration
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (354 download)
Download or read book Measurement of the Decay [Upsilon](S2) [approaches] [Pi Pi Upsilon](1S) written by CRYSTAL BALL Collaboration and published by . This book was released on 1985 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the decay of the _U63 (1S) [upsilon(1S)] and _U63(2S) [upsilon(2S)] resonances to muon pairs PDF Online Free](https://books.google.com/books/content/images/frontcover/SHNjzwEACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (752 download)
Download or read book Measurement of the decay of the _U63 (1S) [upsilon(1S)] and _U63(2S) [upsilon(2S)] resonances to muon pairs written by and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the decay of the _U63 (1S) [upsilon(1S)] and _U63(2S) [upsilon(2S)] resonances to muon pairs PDF Online Free](https://books.google.com/books/content/images/frontcover/EQNuHQAACAAJ?fife=w200-h370)
Download or read book Measurement of the decay of the _U63 (1S) [upsilon(1S)] and _U63(2S) [upsilon(2S)] resonances to muon pairs written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the Decay of the U(1S) [Upsilon(1S)] and U(2S) [Upsilon(2S)] Resonances to Muon Pairs and Determination of the Strong Coupling Constant Using the Crystal Ball Detector PDF Online Free](https://books.google.com/books/content/images/frontcover/MiOqswEACAAJ?fife=w200-h370)
Author : Michael Kobel
Publisher :
ISBN 13 :
Total Pages : 185 pages
Book Rating : 4.:/5 (256 download)
Download or read book Measurement of the Decay of the U(1S) [Upsilon(1S)] and U(2S) [Upsilon(2S)] Resonances to Muon Pairs and Determination of the Strong Coupling Constant Using the Crystal Ball Detector written by Michael Kobel and published by . This book was released on 1991 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the decay of the _U63(1S) [Upsilon(1S)] and _U63(2S) [Upsilon(2S)] resonances to muon pairs and determination of the strong coupling constant using the crystal ball detector PDF Online Free](https://books.google.com/books/content/images/frontcover/q_8FGwAACAAJ?fife=w200-h370)
Author : Michael Kobel
Publisher :
ISBN 13 :
Total Pages : 185 pages
Book Rating : 4.:/5 (654 download)
Download or read book Measurement of the decay of the _U63(1S) [Upsilon(1S)] and _U63(2S) [Upsilon(2S)] resonances to muon pairs and determination of the strong coupling constant using the crystal ball detector written by Michael Kobel and published by . This book was released on 1991 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download A measurement of the electronic widths Gee [gamma ee] of the U(1S) [upsilon(1S)], U(2S) [upsilon(2S)], and U(4S) [upsilon(4S)] resonances, and of the total decay width G [gamma] of the U(4S) [upsilon(4S)] PDF Online Free](https://books.google.com/books/content/images/frontcover/MNJMHAAACAAJ?fife=w200-h370)
Author : ARGUS Collaboration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (755 download)
Download or read book A measurement of the electronic widths Gee [gamma ee] of the U(1S) [upsilon(1S)], U(2S) [upsilon(2S)], and U(4S) [upsilon(4S)] resonances, and of the total decay width G [gamma] of the U(4S) [upsilon(4S)] written by ARGUS Collaboration and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. Aubert
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (316 download)
Download or read book Observation of $\Upsilon(4S) Decays To$\pi^+pi^-\Upsilon(1S)$ and $\pi^+pi^-\Upsilon(1S)$ written by B. Aubert and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the first measurement of {Upsilon}(4S) decays to {pi}{sup +}{pi}{sup -} {Upsilon}(1S) and {pi}{sup +}{pi}{sup -} {Upsilon}(2S) based on a sample of 230 x 10{sup 6} {Upsilon}(4S) mesons collected with the BABAR detector. They measure the product branching fractions {Beta}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -} {Upsilon}(1S)) x {Beta}({Upsilon}(1S) {yields} {mu}{sup +}{mu}{sup -}) = (2.23 {+-} 0.25{sub stat} {+-} 0.27{sub sys}) x 10{sup -6} and {Beta}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -}{Upsilon}(2S)) x {Beta}({Upsilon}(2S) {yields} {mu}{sup +}{mu}{sup -}) = (1.69 {+-} 0.26{sub stat} {+-} 0.20{sub sys}) x 10{sup -6}, from which they derive the partial widths {Lambda}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -} {Upsilon}(1S)) = (1.8 {+-} 0.4) keV and {Lambda}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -}{Upsilon}(2S)) = (2.7 {+-} 0.8) keV.
![Download First Observation of the Eta_b Meson and Study of the Decays Upsilon(3S) -] Gamma Eta_b and Upsilon(2S) -] Gamma Eta_b PDF Online Free](https://books.google.com/books/content/images/frontcover/lQq3AQAACAAJ?fife=w200-h370)
Author : Christopher Alan West
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (649 download)
Download or read book First Observation of the Eta_b Meson and Study of the Decays Upsilon(3S) -] Gamma Eta_b and Upsilon(2S) -] Gamma Eta_b written by Christopher Alan West and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents the results of an analysis of data samples consisting of 122 million Upsilon(3S) decays and 90 million Upsilon(2S) decays collected with the BABAR detector operating at the PEP II asymmetric-energy storage rings at SLAC National Accelerator Laboratory. The eta_b meson is observed for the first time in the decay Upsilon(3S) -> gamma eta_b and its existence is confirmed in the decay Upsilon(2S) -> gamma eta_b. The eta_b mass extracted from the Upsilon(3S) -> gamma eta_b sample is 9388.9^{+3.1}_{-2.3}(stat) +/- 2.7 (syst) MeV/c^2, corresponding to a hyperfine mass splitting m_{Upsilon(1S)}-m_{eta_b}=71.4^{+2.3}_{-3.1}(stat) +/- 2.7(syst) MeV/c^2. The branching fraction for the decay Upsilon(3S) -> gamma eta_b is determined to be [4.8 +/- 0.5(stat) +/- 0.6(syst)] x 10^{-4}. An analysis of the decay Upsilon(2S) -> gamma eta_b confirms the observation of the eta_b meson and provides an additional measurement of the eta_b mass: 9394.2^{+4.8}_{-4.9}(stat) +/- 2.0 (syst) MeV/c^2. The branching fraction for the decay Upsilon(2S) -> gamma eta_b is determined to be [3.9 +/- 1.1(stat)^{+1.1}_{-0.9} (syst)] x 10^{-4}. As the measurements in the two samples are consistent, the masses are averaged to provide a combined value of m_{eta_b} = 9390.9 +/- 3.2 MeV/c^2. After canceling common systematic errors, the following branching fraction ratio is determined: BR[Upsilon(2S) -> gamma eta_b]/BR[Upsilon(3S) -> gamma eta_b] = 0.82 +/- 0.24(stat)^{+0.20}_{-0.19}(syst).
Author :
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ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.0/5 ( download)
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Wilson
Publisher : Richard Wilson
ISBN 13 : 061542158X
Total Pages : 536 pages
Book Rating : 4.6/5 (154 download)
Download or read book Physics is Fun: Memoirs of a Life in Physics written by Richard Wilson and published by Richard Wilson. This book was released on 2011 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the Decay B0 [becomes] D-l+[upsilon] PDF Online Free](https://books.google.com/books/content/images/frontcover/AwgRzQEACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (355 download)
Download or read book Measurement of the Decay B0 [becomes] D-l+[upsilon] written by and published by . This book was released on 1989 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of the Decay B0 [becomes] D*̳-l+[upsilon] PDF Online Free](https://books.google.com/books/content/images/frontcover/KEWeHAAACAAJ?fife=w200-h370)
Author : ARGUS Collaboration
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (354 download)
Download or read book Measurement of the Decay B0 [becomes] D*̳-l+[upsilon] written by ARGUS Collaboration and published by . This book was released on 1987 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
