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ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (16 download)
Download or read book Precise Measurement of the E+ E- \to Pi+ Pi-? Cross Section with the Initial-State Radiation Method at BABAR. written by and published by . This book was released on 2013 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andreas Hafner
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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (118 download)
Download or read book Measurement of the E+e- → Pi+pi-pi+pi- Cross Section Using Initial State Radiation at BABAR written by Andreas Hafner and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the E+ E- to Pi+ Pi- Pi+ Pi-, K+ K- Pi+ Pi-, K+ K- K+ K- Cross Sections Using Initial State Radiation at BaBar written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: First results of a study of the ee− → ?+?−?+?−? process with hard photon emitted from initial state are presented. About 60000 fully reconstructed events have been selected based on 89.3 fb−1 of BABAR data. The invariant mass of the hadronic final state defines the effective collision c.m. energy, and so BABAR ISR data can be compared to the relevant direct e+e− measurements. From obtained 4? mass spectrum we evaluate e+e− → ?+?−?+?− cross section for the range of c.m.s. energy from 0.6 to 4.5 GeV. The systematic error of the cross section measurement is 5% and comparable with the best e+e− data. The cross sections for identified 2K2? and 4K final states also have been presented.
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ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (16 download)
Download or read book Precision Measurement of the E+e- \to K+K-? Cross Section with the Initial-State Radiation Method at BaBar written by and published by . This book was released on 2013 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measuerement of the E+e- → Π+π-π+π- [pi +pi -pi +pi -] Cross Section Using Initial State Radiation at BABAR PDF Online Free](https://books.google.com/books/content/images/frontcover/q3XEzQEACAAJ?fife=w200-h370)
Author : Andreas Hafner
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ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (118 download)
Download or read book Measuerement of the E+e- → Π+π-π+π- [pi +pi -pi +pi -] Cross Section Using Initial State Radiation at BABAR written by Andreas Hafner and published by . This book was released on 2012 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Konrad Griessinger
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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (981 download)
Download or read book Measurement of the e+ e- → pi+ pi- 2pi0 and e+ e- → pi+ pi- 3pi0 cross sections using initial state radiation at BaBar written by Konrad Griessinger and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Initial-State Radiation Measurement of the E+e- -] Pi+pi-pi+pi- Cross Section PDF Online Free](https://books.google.com/books/content/images/frontcover/6b2RwgEACAAJ?fife=w200-h370)
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ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (16 download)
Download or read book Initial-State Radiation Measurement of the E+e- -] Pi+pi-pi+pi- Cross Section written by and published by . This book was released on 2013 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Benedikt Kloss
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ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (933 download)
Download or read book Measurement of the E + E - Pi + Pi - Cross Section Using Initial State Radiation at BESIII written by Benedikt Kloss and published by . This book was released on 2015 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Epem to Pi+ Pi- Pi+ Pi-, K+ K- Pi+ Pi-, and K+ K- K+ K- Cross Sections at Center-of-Mass Energies 0.5--4.5G̃eV Measured with Initial-State Radiation written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the process ee− 2!?+?−?+?−?, with a hard photon radiated from the initial state. About 60,000 fully reconstructed events have been selected from 89 fb−1 of BABAR data. The invariant mass of the hadronic final state defines the effective e+e− center-of-mass energy, so that these data can be compared with the corresponding direct e+e− measurements. From the 4?-mass spectrum, the cross section for the process e+e− 2!?+?−?+?− is measured for center-of-mass energies from 0.6 to 4.5 GeV. The uncertainty in the cross section measurement is typically 5%. We also measure the cross sections for the final states K+K−?+− and K+K−K+K−. We observe the J/? in all three final states and measure the corresponding branching fractions. We search for X(3872) in J/?(2!?+?−)?+?− and obtain an upper limit on the product of the e+e− width of the X(3872) and the branching fraction for X(3872) 2!J/??+?−.
Author : Nicolas Berger
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ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (316 download)
Download or read book Studies of $e^+e^-$ Collisions with a Hard Initial-State Photon at BaBar written by Nicolas Berger and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary BaBar measurements of hadronic cross sections in e{sup +}e{sup -} annihilation using the radiative return technique. The cross sections for e{sup +}e{sup -} {yields} p{bar p}, 3({pi}{sup +}{pi}{sup -}), 2({pi}{sup +}{pi}{sup -})2{pi}{sup 0}, and K{sup +}K{sup -}2({pi}{sup +}{pi}{sup -}) are measured. Measurements of the proton form factor and of the ratio G{sub E}/G{sub M} are also shown.
Download or read book Study of the Reaction $e^{ }e^{-} \to J/\psi\pi^{ }\pi^{-}$ Via Initial-state Radiation at BaBar written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (16 download)
Download or read book Study of the Pi+pi-J//psi Mass Spectrum Via Initial State Radiation at BaBar written by and published by . This book was released on 2008 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an update of the study of the Y(4260) resonance, produced in the process ee− →?{sub ISR}?+?− J/? using initial-state radiation events at the PEP-II e+e− storage rings. This study is based on 454 fb−1 of data recorded with the BABAR detector at a center-of-mass energy in the?(4S) resonance region. From a fit with a single non-relativistic Breit-Wigner shape we obtain updated parameters for the Y(4260) resonance which are m{sub Y} = 4252 ± 6−3{sup +2} MeV/c2 and?{sub Y} = 105 ± 18−6{sup +4} MeV/c2; we also measure?(?+?− J/?)?{sub e{sup +}e−} = (7.5 ± 0.9 ± 0.8) eV. We cannot confirm the recent BELLE observation of a broad structure around 4.05GeV/c2 in this decay mode.
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ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (247 download)
Download or read book The Contrast written by and published by . This book was released on 1876* with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (16 download)
Download or read book Measurements of E+e- to KKeta, KKpi0 and KsKpi CrossSections Using Initial State Radiation Events written by and published by . This book was released on 2007 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports measurements of processes: ee− →?K°{sub s}K{sup {+-}}?{sup {+-}}, e+e− →?K+K−?°, e+e− →??? and e+e− →???°. The initial state radiated photon allows to cover the hadronic final state in the energy range from thresholds up to ≈ 4.6 GeV. The overall size of the data sample analyzed is 232 fb−1, collected by the BABAR detector running at the PEP-II e+e− storage ring. From the Dalitz plot analysis of the K°{sub s}K{sup {+-}}?{sup {+-}} final state, moduli and relative phase of the isoscalar and the isovector components of the e+e− → KK*(892) cross section are determined. Parameters of? and? recurrences are also measured, using a global fitting procedure which exploits the interconnection among amplitudes, moduli and phases of the e+e− →K°{sub s}K{sup {+-}}?{sup {+-}}, K+K−?°,?? final states. The cross section for the OZI-forbidden process e+e− →??° and the J/? branching fractions to KK*(892) and K+K−? are also measured.
![Download The E^+e^- -] 3(\pi^+\pi^- ), 2(\pi^+\pi^-\pi^0) and K^+K^-2(\pi^+\pi^- ) Cross Sections at Center-of-Mass Energies 0.5--4.5 GeV Measured with Initial-StateRadiation PDF Online Free](https://books.google.com/books/content/images/frontcover/79vjjwEACAAJ?fife=w200-h370)
Author : B. Aubert
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ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (316 download)
Download or read book The E^+e^- -] 3(\pi^+\pi^- ), 2(\pi^+\pi^-\pi^0) and K^+K^-2(\pi^+\pi^- ) Cross Sections at Center-of-Mass Energies 0.5--4.5 GeV Measured with Initial-StateRadiation written by B. Aubert and published by . This book was released on 2006 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the processes e{sup +}e{sup -} {yields} 3({pi}{sup +}{pi}{sup -}){gamma}, 2({pi}{sup +}{pi}{sup -}{pi}{sup 0}){gamma} and K{sup +}K{sup -} 2({pi}{sup +} {sup -}){gamma}, with the photon radiated from the initial state. About 20,000, 33,000 and 4,000 fully reconstructed events, respectively, have been selected from 232 fb{sup -1} of BABAR data. The invariant mass of the hadronic final state defines the effective e{sup +}e{sup -} center-of-mass energy, so that these data can be compared with the corresponding direct e{sup +}e{sup -} measurements. From the 3({pi}{sup +}{pi}{sup -}), 2({pi}{sup +}{pi}{sup -}{pi}{sup 0}) and K{sup +}K{sup -} 2({pi}{sup +}{pi}{sup -}) mass spectra, the cross sections for the processes e{sup +}e{sup -} {yields} 3({pi}{sup +}{sup -}), e{sup +}e{sup -} {yields} 2({pi}{sup +}{pi}{sup -}{pi}{sup 0}) and e{sup +}e{sup -} {yields} K{sup +}K{sup -} 2({pi}{sup +}{pi}{sup -}) are measured for center-of-mass energies from production threshold to 4.5 GeV. The uncertainty in the cross section measurement is typically 6-15%. We observe the J/{psi} in all these final states and measure the corresponding branching fractions.
![Download Study of the Reaction E{̂+}e{̂-}-]psi(2S)pi{̂-}pi{̂-} Via Initial State Radiation at BaBar PDF Online Free](https://books.google.com/books/content/images/frontcover/fLvVwQEACAAJ?fife=w200-h370)
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ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (16 download)
Download or read book Study of the Reaction E{̂+}e{̂-}-]psi(2S)pi{̂-}pi{̂-} Via Initial State Radiation at BaBar written by and published by . This book was released on 2013 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (893 download)
Download or read book Measurement of the E^+e^-\to B\bar{b} Cross Section Between \SqrtS written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report ee− 2!b{bar b} cross section measurements by the BABAR experiment performed during an energy scan in the range of 10.54 to 11.20 GeV at the PEP-II ee− collider. A total relative error of about 5% is reached in more than three hundred center-of-mass energy steps, separated by about 5MeV. These measurements can be used to derive precise information on the parameters of the [Upsilon](10860) and [Upsilon](11020) resonances. In particular we show that their widths may be smaller than previously measured.
