About: First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions

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About: First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1103/PhysRevD.86.052002
Description	The invariant mass spectrum of the eta 'pi(+)pi(-) final state produced in two-photon collisions is obtained using a 673 fb(-1) data sample collected in the vicinity of the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a clear signal of the eta(c)(1S) and measure its mass and width to be Md(eta(c)(1S)) = (2982.7 +/- 1.8(stat) +/- 2.2(syst) +/- 0.3(model)) MeV/c(2) and Gamma(eta(c)(1S)) = (37.8(-5.3)(+5.8)(stat) +/- 2.8(syst) +/- 1.4(model)) MeV/c(2). The third error is an uncertainty due to possible interference between the eta(c)(1S) and a nonresonant component. We also report the first evidence for eta(1760) decay to eta'pi(+)pi(-); we find two solutions for its parameters, depending on the inclusion or not of the X(1835), whose existence is of marginal significance in our data. From a fit to the mass spectrum using coherent X(1835) and eta(1760) resonant amplitudes, we set a 90% confidence level upper limit on the product Gamma B-gamma gamma(eta'pi(+)pi(-)) for the X(1835). The invariant mass spectrum of the eta 'pi(+)pi(-) final state produced in two-photon collisions is obtained using a 673 fb(-1) data sample collected in the vicinity of the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a clear signal of the eta(c)(1S) and measure its mass and width to be Md(eta(c)(1S)) = (2982.7 +/- 1.8(stat) +/- 2.2(syst) +/- 0.3(model)) MeV/c(2) and Gamma(eta(c)(1S)) = (37.8(-5.3)(+5.8)(stat) +/- 2.8(syst) +/- 1.4(model)) MeV/c(2). The third error is an uncertainty due to possible interference between the eta(c)(1S) and a nonresonant component. We also report the first evidence for eta(1760) decay to eta'pi(+)pi(-); we find two solutions for its parameters, depending on the inclusion or not of the X(1835), whose existence is of marginal significance in our data. From a fit to the mass spectrum using coherent X(1835) and eta(1760) resonant amplitudes, we set a 90% confidence level upper limit on the product Gamma B-gamma gamma(eta'pi(+)pi(-)) for the X(1835). (en)
Title	First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions (en)
skos:prefLabel	First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisions (en)
skos:notation	RIV/00216208:11320/12:10127370!RIV13-MSM-11320___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(LA10033), Z(MSM0021620859)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kodyš, Peter
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	136705
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10127370
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	belle; threshold; baryonium; decay (en)
http://linked.open.../riv/klicoveSlovo	decay threshold baryonium belle
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[F2A945C33E49]
http://linked.open...i/riv/nazevZdroje	Physical Review D - Particles, Fields, Gravitation and Cosmology
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	103 (xsd:int)
http://linked.open...vavai/riv/projekt	Participation in the Belle a Belle II experiments: study of B-meson decays
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	86
http://linked.open...iv/tvurceVysledku	Kodyš, Peter Horii, Y. Aihara, H. Bischofberger, M. Hayashii, H. Iijima, T. Aushev, T. Eidelman, S. Asner, D. M. Bakich, A. M. Belous, K. Browder, T. E. Chen, A. Cheon, B. G. Chilikin, K. Chistov, R. Choi, Y. Danilov, M. Gabyshev, N. Gaur, V. Ban, Y. Dalseno, J. Feindt, M. Goh, Y. M. Han, Y. L. Hou, W. -S. Hyun, H. J. Inami, K. Ishikawa, A. Iwabuchi, M. Zhang, C. C.
http://linked.open...ain/vavai/riv/wos	000308530000001
http://linked.open...n/vavai/riv/zamer	Výzkum vlastností jader a subjaderných částic a jejich interakcí
issn	1550-7998
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevD.86.052002
http://localhost/t...ganizacniJednotka	11320

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