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The E E To To K K Pi Pi K K Pi0pi0 And K K K K Cross Sections Measured With Initial State Radiation
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Book Synopsis Cross Sections for the Reactions E+e to K+ K- Pi+pi-, K+ K- Pi0pi0, and K+ K- K+ K- Measured Using Initial-State Radiation by :
Download or read book Cross Sections for the Reactions E+e to K+ K- Pi+pi-, K+ K- Pi0pi0, and K+ K- K+ K- Measured Using Initial-State Radiation written by and published by . This book was released on 2011 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the processes ee− 2!K+K−?+?-?, K+K−?°?°?, and K+K−K+K−?, where the photon is radiated from the initial state. About 84000, 8000, and 4200 fully reconstructed events, respectively, are selected from 454 fb−1 of BABAR data. The invariant mass of the hadronic final state defines the e+e− center-of-mass energy, so that the K+K−?+?−? data can be compared with direct measurements of the e+e− 2!K+K−?+?− reaction. No direct measurements exist for the e+e− 2!K+K−?°?° or e+e− 2!K+K−K+K− reactions, and we present an update of our previous result with doubled statistics. Studying the structure of these events, we find contributions from a number of intermediate states, and extract their cross sections. In particular, we perform a more detailed study of the e+e− 2!?(1020)??? reaction, and confirm the presence of the Y (2175) resonance in the?(1020)f0(980) and K+K− f0(980) modes. In the charmonium region, we observe the J/? in all three final states and in several intermediate states, as well as the?(2S) in some modes, and measure the corresponding branching fractions.
Book Synopsis Measurements of E+e- to KKeta, KKpi0 and KsKpi CrossSections Using Initial State Radiation Events by :
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.
Book Synopsis The E+e- to to K+ K- \pi+\pi-, K+ K- \pi0\pi0 and K+ K- K+ K- Cross Sections Measured with Initial-State Radiation by :
Download or read book The E+e- to to K+ K- \pi+\pi-, K+ K- \pi0\pi0 and K+ K- K+ K- Cross Sections Measured with Initial-State Radiation written by and published by . This book was released on 2007 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the processes e+e− → K+K−?+?−?, K+K−?°?°? and K+K−K+K−?, where the photon is radiated from the initial state. About 34600, 4400 and 2300 fully reconstructed events respectively, are selected from 232 fb−1 of BABAR data. The invariant mass of the hadronic final state defines the effective e+e− center-of-mass energy, so that the K+K−?+?−? data can be compared with direct measurements of the e+e− → K+K−?+?−? reaction; no direct measurements exist for the e+e− → K+K−?°?°? or e+e− → K+K−K+K− reactions. Studying the structure of these events, we find contributions from a number of intermediate states, and we extract their cross sections where possible. In particular, we isolate the contribution from e+e− → ?(1020)f0(980) and study its structure near threshold. In the charmonium region, we observe the J/? in all three final states and several intermediate states, as well as the ?/(2S) in some modes, and measure the corresponding branching fractions. We see no signal for the Y(4260) and obtain an upper limit of ?{sub Y(4260)→??+?−} · ?{sub ee}{sup Y}
Book Synopsis 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 by :
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.
Book Synopsis 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 by :
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/??+?−.
Book Synopsis Initial-State Radiation Measurement of the E+e- -] Pi+pi-pi+pi- Cross Section by :
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:
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:
Book Synopsis Measurement of the E + E - Pi + Pi - Cross Section Using Initial State Radiation at BESIII by : Benedikt Kloss
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:
Book Synopsis Measurement of the E+e- → Pi+pi-pi+pi- Cross Section Using Initial State Radiation at BABAR by : Andreas Hafner
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:
Book Synopsis Measurement of the e+ e- → pi+ pi- 2pi0 and e+ e- → pi+ pi- 3pi0 cross sections using initial state radiation at BaBar by : Konrad Griessinger
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:
Book Synopsis Precise Measurement of the E+ E- \to Pi+ Pi-? Cross Section with the Initial-State Radiation Method at BABAR. by :
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:
Book Synopsis Total and Differential [pi-pi] Cross Sections in [pi-rho] Interactions at 1.25 Bev/c by : D. Duane Carmony
Download or read book Total and Differential [pi-pi] Cross Sections in [pi-rho] Interactions at 1.25 Bev/c written by D. Duane Carmony and published by . This book was released on 1961 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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 by : B. Aubert
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.
Book Synopsis Measuerement of the E+e- → Π+π-π+π- [pi +pi -pi +pi -] Cross Section Using Initial State Radiation at BABAR by : Andreas Hafner
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:
Book Synopsis Precision Measurement of the E+e- \to K+K-? Cross Section with the Initial-State Radiation Method at BaBar by :
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 or read book Compilation of Cross Sections written by and published by . This book was released on 1971 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements on the [pi]-He Cross Sections at High Energy by : G. Brautti
Download or read book Measurements on the [pi]-He Cross Sections at High Energy written by G. Brautti and published by . This book was released on 1961 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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