About: Evidence for a New Resonance and Search for the Y(4140) in the gamma gamma -} phi J/psi Process

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Description	The process gamma gamma -} phi J/psi is measured using a data sample of 825 fb(-1) collected with the Belle detector. A narrow peak of 8:8(-3.2)(+4.2) events, with a significance of 3.2 standard deviations including systematic uncertainty, is observed. The mass and natural width of the structure [named X(4350)] are measured to be [4350.6(-5.1)(+4.6)(stat) +/- 0.7(syst)] MeV/c(2) and [13(-9)(+18)(stat) +/- 4(syst)] MeV, respectively. The product of its two-photon decay width and branching fraction to phi J/psi is 6.7(-2.4)(+3.2) (stat) +/- 1.1(syst)] eV for J(P) = 0(+), or [1.5(-0.6)(+0.7) (stat) +/- 0.3 (syst)]eV for J(P) = 2(+). No signal for the Y(4140) -}phi J/psi structure reported by the CDF Collaboration in B -} K+ phi J/psi decays is observed, and limits of Gamma(gamma gamma) (Y(4140))B(Y(4140) -} phi J/psi) { 41 eV for J(P) = 0(+) or {6.0 eV for J(P) = 2(+) are determined at the 90% C. L. This disfavors the scenario in which the Y(4140) is a D-sD-+(s)(-) molecule. The process gamma gamma -} phi J/psi is measured using a data sample of 825 fb(-1) collected with the Belle detector. A narrow peak of 8:8(-3.2)(+4.2) events, with a significance of 3.2 standard deviations including systematic uncertainty, is observed. The mass and natural width of the structure [named X(4350)] are measured to be [4350.6(-5.1)(+4.6)(stat) +/- 0.7(syst)] MeV/c(2) and [13(-9)(+18)(stat) +/- 4(syst)] MeV, respectively. The product of its two-photon decay width and branching fraction to phi J/psi is 6.7(-2.4)(+3.2) (stat) +/- 1.1(syst)] eV for J(P) = 0(+), or [1.5(-0.6)(+0.7) (stat) +/- 0.3 (syst)]eV for J(P) = 2(+). No signal for the Y(4140) -}phi J/psi structure reported by the CDF Collaboration in B -} K+ phi J/psi decays is observed, and limits of Gamma(gamma gamma) (Y(4140))B(Y(4140) -} phi J/psi) { 41 eV for J(P) = 0(+) or {6.0 eV for J(P) = 2(+) are determined at the 90% C. L. This disfavors the scenario in which the Y(4140) is a D-sD-+(s)(-) molecule. (en)
Title	Evidence for a New Resonance and Search for the Y(4140) in the gamma gamma -} phi J/psi Process Evidence for a New Resonance and Search for the Y(4140) in the gamma gamma -} phi J/psi Process (en)
skos:prefLabel	Evidence for a New Resonance and Search for the Y(4140) in the gamma gamma -} phi J/psi Process Evidence for a New Resonance and Search for the Y(4140) in the gamma gamma -} phi J/psi Process (en)
skos:notation	RIV/00216208:11320/10:10062477!RIV11-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	11
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Doležal, Zdeněk 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	257969
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/10:10062477
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	KEKB; MESONS; IDENTIFICATION; BELLE (en)
http://linked.open.../riv/klicoveSlovo	IDENTIFICATION KEKB MESONS BELLE
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[DE411D43A08C]
http://linked.open...i/riv/nazevZdroje	Physical Review Letters
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	134 (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	2010
http://linked.open...v/svazekPeriodika	104
http://linked.open...iv/tvurceVysledku	Doležal, Zdeněk Kodyš, Peter Aihara, H. Shen, C. P. Yuan, C.Z.
http://linked.open...ain/vavai/riv/wos	000275802600010
http://linked.open...n/vavai/riv/zamer	Výzkum vlastností jader a subjaderných částic a jejich interakcí
issn	0031-9007
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	11320

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