Analysis of the 33-133-133-1final state in photon-photon collisions

Karch, K.; Antreasyan, D.; Bartels, H. W.; Besset, D.; Bieler, C.; Bienlein, J. K.; Bizzeti, A.; Bloom, E. D.; Brock, I. C.; Brockmüller, K.; Cabenda, R.; Cartacci, A. M.; Cavalli‐Sforza, M.; Clare, R.; Compagnucci, A.; Conforto, G.; Cooper, S.; Cowan, R.; Coyne, D. G.; Engler, A.; Fairfield, K.; Folger, G.; Fridman, A.; Gaiser, J.; Gelphman, D.; Glaser, G.; Godfrey, G.; Graaf, K.J. de; Heimlich, F. H.; Heinsius, F. H.; Hofstadter, R.; Irion, J.; Jakubowski, Z.; Janßen, H.; Keh, S.; Kiel, T.; Kilian, H. G.; Kirkbride, I.; Koiber, T.; Kobel, M.; Koch, W.; König, A. C.; Königsmann, K.; Kraemer, R. W.; Krüger, S.; Landi, G.; Lee, S.; Leffler, S.; Lekebusch, R.; Lesiak, T.; Litke, A. M.; Lockman, W. S.; Lowe, S.; Lurz, B.; Marlow, D.; Marsiske, H.; Maschmann, W.; McBride, P.; Messing, F.; Metzger, W. J.; Meyer, H.; Monteleoni, B.; Muryn, B.; Nernst, R.; Niczyporul, B.; Nowak, G.; Peck, C.; Pelfer, P. G.; Pollock, B.; Porter, F. C.; Prindle, D.; Ratoff, P. N.; Reidenbach, M.; Renger, B.; Rippich, C.; Scheer, M.; Schmitt, P.; Schotanus, J.; Schütte, J.; Schwarz, A. S.; Sievers, D.; Skwarnicki, T.; Stock, V.; Strauch, K.; Strohbusch, U.; Tompkins, J.; Trost, H. J.; Uitert, B. van; Walle, R. T. Van de; Vogel, H.; Voigt, A.F.; Volland, U.; Wachs, K.; Wacker, K.; Walk, W.; Wegener, H.; Williams, D.; Zschorsch, P.

doi:10.1007/bf01881706

Cited by 26 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the discovery of the η 2 (2030) inpp annihilation [9,18] to some extent leaves the η 2 (1870) as an 'extra', i.e., non-qq state [9] since the η 2 (2030) looks like a natural candidate for the η 2 (1645)'s first radial excitation from its mass which is close to the Godfrey-Isgur quark model prediction of 2.13 GeV [12] for the 2 1 D 2 nn state [η 2 (2Dnn)]. So, the hybrid interpretation for the η 2 (1870) becomes a popular opinion [3,9,10,14,15,16,17,19,20]. Apart from the η 2 (1870), its companion π 2 (1880) was also regarded to be a viable non-exotic hybrid candidate [10,14,15,16,17,19,20,21,22,23,24].…”

supporting

confidence: 55%

Canonical interpretation of the η 2(1870)

Wang

2009

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

supporting

confidence: 55%

Canonical interpretation of the η 2(1870)

Wang

2009

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

“…Now it is believed that there exist two states with these quantum numbers below 2 GeV: π 1 (1400) [2,3] and π 1 (1600) [4,5](note, a recent analysis [6] finds no evidence for either candidate). There are also other reported hybrid candidates with J P C = 0 −+ [7,8], 1 −− [9] and 2 −+ [10,11,12]. Theoretically, the structure of the π 1 states remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Coulomb gauge approach to qq̄g hybrid mesons

2007

View full text Add to dashboard Cite

An effective Coulomb gauge Hamiltonian, H eff , is used to calculate the light (uūg), strange (ssg) and charmed (ccg) hybrid meson spectra. For the same two parameter H eff providing glueball masses consistent with lattice results and a good description of the observed u, d, s and c quark mesons, a large-scale variational treatment predicts the lightest hybrid has J P C = 0 ++ and mass 2100 MeV. The lightest exotic 1 −+ state is just above 2200 MeV, near the upper limit of lattice and Flux Tube predictions. These theoretical formulations all indicate the observed 1 −+ π1(1600) and, more clearly, π1(1400) are not hybrid states. The Coulomb gauge approach further predicts that in the strange and charmed sectors, respectively, the ground state hybrids have 1 +− with masses 2125 and 3830 MeV, while the first exotic 1 −+ states are at 2395 and 4020 MeV. Finally, using our hybrid wavefunctions, dimensional counting rules and the Franck-Condon principle, novel experimental signatures are presented to assist light and heavy hybrid meson searches.

show abstract

“…[19]- [22]. For the u and d quarks vacuum condensate, we employ 0|qq|0 = (−275(5)) 3 MeV 3 and for the s quark vacuum condensate 0|ss|0 = (−296(11)) 3 MeV 3 [23].…”

Section: Numerical Illustrationmentioning

confidence: 99%

“…Its mass and width are found to be (1660 ± 16) MeV and (270 ± 60) MeV [2], respectively. Another family member of the pseudotensor mesons, the η 2 (1870) has been observed in γγ reactions [3], pp annihilation [4], and radiative J/ψ decays in BES Collaboration [5]. This state has been detected by the Crystal Ball collaboration [3] in the final state ηπ 0 π 0 of a γγ reaction as a resonant structure finding mass (1881 ± 32 ± 40) MeV and width (221 ± 92 ± 44) MeV, and in the reaction pp −→ ηπ 0 π 0 π 0 by the Crystal Barrel collaboration, with mass (1875 ± 20 ± 25) MeV, and width (200 ± 25 ± 45) MeV and for the η 2 (1645) state, (1645 ± 14 ± 15) MeV, (180 +40 −21 ± 25) MeV, respectively [6].…”

Section: Introductionmentioning

confidence: 99%

Dissociation of Pseudotensor Mesons through Critical Temperature

Türkan¹,

Süngü²,

Güngör³

et al. 2022

Preprint

View full text Add to dashboard Cite

We have computed the masses and decay constants of isotriplet π 2 (1670), the isoscalar η 2 (1645) and η 2 (1870) states as the ground-state nonet of 1 1 D 2 case within the Thermal QCD sum rules framework. This method is applied to the spectral changes of pseudotensor mesons at high temperatures including quark, gluon, and mixed condensates up to the five dimensions. We found that their masses and decay constants are insensitive to temperature in low-temperature region. At the near critical temperature, we observed an exponential decrease of the masses of π 2 , η 2 (1645), and η 2 (1870), but while the decay constant of π 2 is fallen, that of η 2 (1645) and η 2 (1870) is increased as a function of temperature. The modification of condensates at T = 0 is crucial to the change of considered mesons properties in hot medium. We discuss and interpret the implications of the physical meaning of our results.

show abstract

Analysis of the 33-133-133-1final state in photon-photon collisions

Cited by 26 publications

References 15 publications

Canonical interpretation of the η 2(1870)

Canonical interpretation of the η 2(1870)

Coulomb gauge approach to qq̄g hybrid mesons

Dissociation of Pseudotensor Mesons through Critical Temperature

Contact Info

Product

Resources

About