Author: Robert Christiaan Wilhelmus van Gulik
Publisher:
ISBN: 9789042301757
Category :
Languages : en
Pages : 165
Book Description
Resonance Production in Two-photon Collisions
Author: Robert Christiaan Wilhelmus van Gulik
Publisher:
ISBN: 9789042301757
Category :
Languages : en
Pages : 165
Book Description
Publisher:
ISBN: 9789042301757
Category :
Languages : en
Pages : 165
Book Description
Resonant Production in Two Photon Collisions
Author: Frederick Edward Butler
Publisher:
ISBN:
Category :
Languages : en
Pages : 238
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 238
Book Description
Resonant Production in Two Photon Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Using 220 picobarn/sup /minus/1/ of data collected by the Mark II detector at PEP, we have measured the width of the [eta]' for quasi real photons. The width is separately measured in the three reactions ee/sup /minus// .-->. ee/sup /minus//[eta]°.pi.+.pi./sup /minus//; [eta]° .-->. .gamma gamma., e+e/sup /minus// .-->. e+e/sup /minus//[eta]°.pi.+.pi./sup /minus//; [eta]° .-->. .pi.+.pi./sup /minus//(.pi.°, .gamma.) and e+e/sup /minus// .-->. e+e/sup /minus//[rho]°.gamma., giving a statistically weighted average two-photon width of GAMMA/sub [eta]'.--> gamma gamma./ = 5. 21+-0.28 keV. As a by-product of the measurement of GAMMA/sub /eta/'.--> gamma gamma./ using the decay mode /eta/' .-->. [rho].gamma., we also measured a two-photon decay width for the a2(1320) of GAMMA/sub a 2(1320).--> gamma gamma./ = 1.17+-0. 15+-0.25 keV. 47 refs., 50 figs., 8 tabs.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Using 220 picobarn/sup /minus/1/ of data collected by the Mark II detector at PEP, we have measured the width of the [eta]' for quasi real photons. The width is separately measured in the three reactions ee/sup /minus// .-->. ee/sup /minus//[eta]°.pi.+.pi./sup /minus//; [eta]° .-->. .gamma gamma., e+e/sup /minus// .-->. e+e/sup /minus//[eta]°.pi.+.pi./sup /minus//; [eta]° .-->. .pi.+.pi./sup /minus//(.pi.°, .gamma.) and e+e/sup /minus// .-->. e+e/sup /minus//[rho]°.gamma., giving a statistically weighted average two-photon width of GAMMA/sub [eta]'.--> gamma gamma./ = 5. 21+-0.28 keV. As a by-product of the measurement of GAMMA/sub /eta/'.--> gamma gamma./ using the decay mode /eta/' .-->. [rho].gamma., we also measured a two-photon decay width for the a2(1320) of GAMMA/sub a 2(1320).--> gamma gamma./ = 1.17+-0. 15+-0.25 keV. 47 refs., 50 figs., 8 tabs.
Production of Resonances in Photon-photon Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The subject of production of resonances via two photons in ee- colliding beams has finally come into its own. In particular, the eta meson is already changing from this year's sensation to next year's normalization. As for the other old physics mesons with even charge conjugation it seems likely that measurements of the scalar and tensor mesons coupling to two photons are quite doable and will be forthcoming. These will yield some interesting information on the quark content of these states and/or the dynamics of their two photon decays. As for the charmonium states, a measurement of some of the two photon decay widths would be quite interesting in terms of the information it gives on the dynamics of this system. However, even at LEP energies the cross sections for production of any particular state are rather small and one must be lucky to have a detectable decay mode or modes with substantial branching fraction. Finally, there is the .pi.° which started the whole subject. A measurement of this coupling is much easier using the complementary technique for determining two photon widths-the Primakoff effect. GAMMA(.pi.° .-->. .gamma gamma.) has long since been measured with high accuracy in this way.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The subject of production of resonances via two photons in ee- colliding beams has finally come into its own. In particular, the eta meson is already changing from this year's sensation to next year's normalization. As for the other old physics mesons with even charge conjugation it seems likely that measurements of the scalar and tensor mesons coupling to two photons are quite doable and will be forthcoming. These will yield some interesting information on the quark content of these states and/or the dynamics of their two photon decays. As for the charmonium states, a measurement of some of the two photon decay widths would be quite interesting in terms of the information it gives on the dynamics of this system. However, even at LEP energies the cross sections for production of any particular state are rather small and one must be lucky to have a detectable decay mode or modes with substantial branching fraction. Finally, there is the .pi.° which started the whole subject. A measurement of this coupling is much easier using the complementary technique for determining two photon widths-the Primakoff effect. GAMMA(.pi.° .-->. .gamma gamma.) has long since been measured with high accuracy in this way.
A Study of Resonance Production in Two-photon Reactions
Author: Kent Arthur Schwitkis
Publisher:
ISBN:
Category : Photon-photon interactions
Languages : en
Pages : 344
Book Description
Publisher:
ISBN:
Category : Photon-photon interactions
Languages : en
Pages : 344
Book Description
Resonance Production in Two-photon Interactions
Author: Natalie Ann Roe
Publisher:
ISBN:
Category : Photons
Languages : en
Pages : 248
Book Description
Publisher:
ISBN:
Category : Photons
Languages : en
Pages : 248
Book Description
RESONANCE PRODUCTION BY TWO-PHOTON INTERACTIONS AT SPEAR.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Two-photon interactions have been studied with the SLAC-LBL Mark II magnetic detector at SPEAR. The cross section for?' production by the reaction ee− → e+e−?' has been measured at beam energies from 2.0 GeV to 3.7 GeV. The radiative width?{sub??}(?') has been determined to be 5.8 ± 1.1 keV (±20% systematic uncertainty). Upper limits on the radiative widths of the f(1270), A2(1310) and f'(1515) tensor mesons have been determined. A search has been made for production of the E(1420) by?{gamma} collisions, but no signal is observed.
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Two-photon interactions have been studied with the SLAC-LBL Mark II magnetic detector at SPEAR. The cross section for?' production by the reaction ee− → e+e−?' has been measured at beam energies from 2.0 GeV to 3.7 GeV. The radiative width?{sub??}(?') has been determined to be 5.8 ± 1.1 keV (±20% systematic uncertainty). Upper limits on the radiative widths of the f(1270), A2(1310) and f'(1515) tensor mesons have been determined. A search has been made for production of the E(1420) by?{gamma} collisions, but no signal is observed.
Photon-photon Collisions - 9th International Workshop On Photon-photon Collisions
Author: D O Caldwell
Publisher: World Scientific
ISBN: 981455460X
Category :
Languages : en
Pages : 532
Book Description
The proceedings blend current and future two-photon physics. Developments since the last Photon-Photon Workshop four years ago are summarized, and the future of the field is projected, not only at existing accelerators, but also at heavy-ion colliders B-factories, and especially linear colliders with back-scattered laser beams.
Publisher: World Scientific
ISBN: 981455460X
Category :
Languages : en
Pages : 532
Book Description
The proceedings blend current and future two-photon physics. Developments since the last Photon-Photon Workshop four years ago are summarized, and the future of the field is projected, not only at existing accelerators, but also at heavy-ion colliders B-factories, and especially linear colliders with back-scattered laser beams.
Resonance Formation in Photon-photon Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Recent experimental progress on resonance formation in photon-photon collisions is reviewed with particular emphasis on the pseudoscalar and tensor nonents and on the .gamma gamma.* production of spin-one resonances. 37 refs., 17 figs., 5 tabs.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Recent experimental progress on resonance formation in photon-photon collisions is reviewed with particular emphasis on the pseudoscalar and tensor nonents and on the .gamma gamma.* production of spin-one resonances. 37 refs., 17 figs., 5 tabs.
Two-photon Physics
Author: F. Kapusta
Publisher: World Scientific
ISBN: 981453384X
Category : Colliders
Languages : en
Pages : 358
Book Description
Publisher: World Scientific
ISBN: 981453384X
Category : Colliders
Languages : en
Pages : 358
Book Description