Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime

A partial wave analysis is presented of Crystal Barrel data on pbar-p -> pizero-pizero, eta-eta and eta-etaprime from 600 to 1940 MeV/c, combined with earlier data on d\sigma /d\Omega and P for pbar-p->piminus-piplus. The following s-channel I=0 resonances are identified: (i) J^{PC} = 5^{--} w...

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Detalles Bibliográficos
Autores principales: Anisovich, A.V., Baker, C.A., Batty, C.J., Bugg, D.V., Hasan, A., Hodd, C., Zou, B.S., Kisiel, J., Nikonov, V.A., Sarantsev, A.V., Sarantsev, V.V.
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(99)00407-8
http://cds.cern.ch/record/1380542
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author Anisovich, A.V.
Baker, C.A.
Batty, C.J.
Bugg, D.V.
Hasan, A.
Hodd, C.
Zou, B.S.
Kisiel, J.
Nikonov, V.A.
Sarantsev, A.V.
Sarantsev, V.V.
author_facet Anisovich, A.V.
Baker, C.A.
Batty, C.J.
Bugg, D.V.
Hasan, A.
Hodd, C.
Zou, B.S.
Kisiel, J.
Nikonov, V.A.
Sarantsev, A.V.
Sarantsev, V.V.
author_sort Anisovich, A.V.
collection CERN
description A partial wave analysis is presented of Crystal Barrel data on pbar-p -> pizero-pizero, eta-eta and eta-etaprime from 600 to 1940 MeV/c, combined with earlier data on d\sigma /d\Omega and P for pbar-p->piminus-piplus. The following s-channel I=0 resonances are identified: (i) J^{PC} = 5^{--} with mass and width (M,\Gamma) at (2295+-30,235^{+65}_{-40}) MeV, (ii) J^{PC} = 4^{++} at (2020+-12, 170+-15) MeV and (2300+-25, 270+-50) MeV, (iii) 3D3 JPC = 3^{--} at (1960+-15, 150+-25) MeV and (2210+-4$, 360+-55) MeV, and a 3G3 state at (2300 ^{+50}_{-80}, 340+-150) MeV, (iv) JPC = 2^{++} at (1910+-30, 260+-40) MeV, (2020+-30, 275+-35) MeV, (2230+-30, 245+-45) MeV, and (2300+-35, 290+-50) MeV, (v) JPC = 1^{--} at (2005+-40, 275+-75) MeV, and (2165+-40, 160 ^{+140}_{-70}) MeV, and (vi) JPC = 0^{++} at (2005+-30, 305+-50) MeV, (2105+-15, 200+-25) MeV, and (2320+-30, 175+-45) MeV. In addition, there is a less well defined 6^{++} resonance at 2485+-40 MeV, with Gamma = 410+-90 MeV. For every JP, almost all these resonances lie on well defined linear trajectories of mass squared v. excitation number. The slope is 1.10+-0.03 Gev^2 per excitation. The f_0(2105) has strong coupling to eta-\eta, but much weaker coupling to pizero-pizero. Its flavour mixing angle between q-qbar and s-sbar is (59-71.6)deg, i.e. dominant decays to s-sbar. Such decays and its strong production in pbar-p interactions strongly suggest exotic character.
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language eng
publishDate 2011
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spelling cern-13805422023-03-14T20:51:11Zdoi:10.1016/S0375-9474(99)00407-8http://cds.cern.ch/record/1380542engAnisovich, A.V.Baker, C.A.Batty, C.J.Bugg, D.V.Hasan, A.Hodd, C.Zou, B.S.Kisiel, J.Nikonov, V.A.Sarantsev, A.V.Sarantsev, V.V.Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprimeParticle Physics - ExperimentA partial wave analysis is presented of Crystal Barrel data on pbar-p -> pizero-pizero, eta-eta and eta-etaprime from 600 to 1940 MeV/c, combined with earlier data on d\sigma /d\Omega and P for pbar-p->piminus-piplus. The following s-channel I=0 resonances are identified: (i) J^{PC} = 5^{--} with mass and width (M,\Gamma) at (2295+-30,235^{+65}_{-40}) MeV, (ii) J^{PC} = 4^{++} at (2020+-12, 170+-15) MeV and (2300+-25, 270+-50) MeV, (iii) 3D3 JPC = 3^{--} at (1960+-15, 150+-25) MeV and (2210+-4$, 360+-55) MeV, and a 3G3 state at (2300 ^{+50}_{-80}, 340+-150) MeV, (iv) JPC = 2^{++} at (1910+-30, 260+-40) MeV, (2020+-30, 275+-35) MeV, (2230+-30, 245+-45) MeV, and (2300+-35, 290+-50) MeV, (v) JPC = 1^{--} at (2005+-40, 275+-75) MeV, and (2165+-40, 160 ^{+140}_{-70}) MeV, and (vi) JPC = 0^{++} at (2005+-30, 305+-50) MeV, (2105+-15, 200+-25) MeV, and (2320+-30, 175+-45) MeV. In addition, there is a less well defined 6^{++} resonance at 2485+-40 MeV, with Gamma = 410+-90 MeV. For every JP, almost all these resonances lie on well defined linear trajectories of mass squared v. excitation number. The slope is 1.10+-0.03 Gev^2 per excitation. The f_0(2105) has strong coupling to eta-\eta, but much weaker coupling to pizero-pizero. Its flavour mixing angle between q-qbar and s-sbar is (59-71.6)deg, i.e. dominant decays to s-sbar. Such decays and its strong production in pbar-p interactions strongly suggest exotic character.A partial wave analysis is presented of Crystal Barrel data on p ̄ p→π 0 π 0 , ηη and ηη′ from 600 to 1940 MeV/c, combined with earlier data on dσ/dΩ and P for p ̄ p→π − π + . The following s -channel I=0 resonances are identified: (i) J PC =5 −− with mass and width ( M , Γ ) at ( 2295±30 , 235 +65 −40 ) MeV, (ii) J PC =4 ++ at ( 2020±12 , 170±15 ) MeV and ( 2300±25 , 270±50 ) MeV, (iii) 3 D 3 J PC =3 −− at ( 1960±15 , 150±25 ) MeV and ( 2210±40 , 360±55 ) MeV, and a 3 G 3 state at ( 2300 +50 −80 ,340±150) MeV, (iv) J PC =2 ++ at ( 1910±30 , 260±40 ) MeV, ( 2020±30 , 275±35 ) MeV, ( 2230±30 , 245±45 ) MeV, and ( 2300±35 , 290±50 ) MeV, (v) J PC =1 −− at ( 2005±40 , 275±75 ) MeV, and ( 2165±40 , 160 +140 −70 ) MeV, and (vi) J PC =0 ++ at ( 2005±30 , 305±50 ) MeV, ( 2105±15 , 200±25 ) MeV, and ( 2320±30 , 175±45 ) MeV. In addition, there is a less well defined 6 ++ resonance at 2485±40 MeV, with Γ=410±90 MeV. For every J P , almost all these resonances lie on well defined linear trajectories of mass squared versus excitation number. The slope is 1.10±0.03 GeV 2 per excitation.A partial wave analysis is presented of Crystal Barrel data on pbar-p -> pizero-pizero, eta-eta and eta-etaprime from 600 to 1940 MeV/c, combined with earlier data on d\sigma /d\Omega and P for pbar-p->piminus-piplus. The following s-channel I=0 resonances are identified: (i) J^{PC} = 5^{--} with mass and width (M,\Gamma) at (2295+-30,235^{+65}_{-40}) MeV, (ii) J^{PC} = 4^{++} at (2020+-12, 170+-15) MeV and (2300+-25, 270+-50) MeV, (iii) 3D3 JPC = 3^{--} at (1960+-15, 150+-25) MeV and (2210+-4$, 360+-55) MeV, and a 3G3 state at (2300 ^{+50}_{-80}, 340+-150) MeV, (iv) JPC = 2^{++} at (1910+-30, 260+-40) MeV, (2020+-30, 275+-35) MeV, (2230+-30, 245+-45) MeV, and (2300+-35, 290+-50) MeV, (v) JPC = 1^{--} at (2005+-40, 275+-75) MeV, and (2165+-40, 160 ^{+140}_{-70}) MeV, and (vi) JPC = 0^{++} at (2005+-30, 305+-50) MeV, (2105+-15, 200+-25) MeV, and (2320+-30, 175+-45) MeV. In addition, there is a less well defined 6^{++} resonance at 2485+-40 MeV, with Gamma = 410+-90 MeV. For every JP, almost all these resonances lie on well defined linear trajectories of mass squared v. excitation number. The slope is 1.10+-0.03 Gev^2 per excitation. The f_0(2105) has strong coupling to eta-\eta, but much weaker coupling to pizero-pizero. Its flavour mixing angle between q-qbar and s-sbar is (59-71.6)deg, i.e. dominant decays to s-sbar. Such decays and its strong production in pbar-p interactions strongly suggest exotic character.arXiv:1109.1188QMRB12QMRB12oai:cds.cern.ch:13805422011-09-07
spellingShingle Particle Physics - Experiment
Anisovich, A.V.
Baker, C.A.
Batty, C.J.
Bugg, D.V.
Hasan, A.
Hodd, C.
Zou, B.S.
Kisiel, J.
Nikonov, V.A.
Sarantsev, A.V.
Sarantsev, V.V.
Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
title Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
title_full Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
title_fullStr Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
title_full_unstemmed Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
title_short Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
title_sort partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/S0375-9474(99)00407-8
http://cds.cern.ch/record/1380542
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