About: First observation of radiative B(0) -} phi K(0)gamma decays and measurements of their time-dependent CP violation

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About: First observation of radiative B(0) -} phi K(0)gamma decays and measurements of their time-dependent CP violation Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://prd.aps.org/pdf/PRD/v84/i7/e071101
Description	We report the first observation of the radiative decay B(0) -} phi K(0)gamma using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal of 37 +/- 8 events with a significance of 5.4 standard deviations including systematic uncertainties. The measured branching fraction is B(B(0) -}phi K(0)gamma) = (2.74 +/- 0.60 +/- 0.32) x 10(-6), where the uncertainties are statistical and systematic, respectively. We also report the first measurements of time-dependent CP-violation parameters: S(phi K0s gamma) = +0.74(-1.05)(+0.72)(stat)(-0.024)(+0.10)(syst) and A phi(0)(Ks)gamma = +0.35 +/- 0.58(stat)(-0.10)(+0.23)(syst). Furthermore, we measure B(B(+) -} phi K(+)gamma) = (2.48 +/- 0.30 +/- 0.24) x 10(-6), A(CP) = -0.03 +/- 0.11 +/- 0.08, and find that the signal is concentrated in the M(phi K) mass region near threshold. We report the first observation of the radiative decay B(0) -} phi K(0)gamma using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal of 37 +/- 8 events with a significance of 5.4 standard deviations including systematic uncertainties. The measured branching fraction is B(B(0) -}phi K(0)gamma) = (2.74 +/- 0.60 +/- 0.32) x 10(-6), where the uncertainties are statistical and systematic, respectively. We also report the first measurements of time-dependent CP-violation parameters: S(phi K0s gamma) = +0.74(-1.05)(+0.72)(stat)(-0.024)(+0.10)(syst) and A phi(0)(Ks)gamma = +0.35 +/- 0.58(stat)(-0.10)(+0.23)(syst). Furthermore, we measure B(B(+) -} phi K(+)gamma) = (2.48 +/- 0.30 +/- 0.24) x 10(-6), A(CP) = -0.03 +/- 0.11 +/- 0.08, and find that the signal is concentrated in the M(phi K) mass region near threshold. (en)
Title	First observation of radiative B(0) -} phi K(0)gamma decays and measurements of their time-dependent CP violation First observation of radiative B(0) -} phi K(0)gamma decays and measurements of their time-dependent CP violation (en)
skos:prefLabel	First observation of radiative B(0) -} phi K(0)gamma decays and measurements of their time-dependent CP violation First observation of radiative B(0) -} phi K(0)gamma decays and measurements of their time-dependent CP violation (en)
skos:notation	RIV/00216208:11320/11:10105886!RIV12-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	7
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Doležal, Zdeněk Kodyš, Peter Drásal, Zbyněk
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	211187
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/11:10105886
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	time-dependent CP violation; B decay; BELLE (en)
http://linked.open.../riv/klicoveSlovo	BELLE B decay time-dependent CP violation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[D6C51119F249]
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	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	157 (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	2011
http://linked.open...v/svazekPeriodika	84
http://linked.open...iv/tvurceVysledku	Drásal, Zbyněk Doležal, Zdeněk Kodyš, Peter Adachi, I. Browder, TB Sahoo, H.
http://linked.open...ain/vavai/riv/wos	000296526200001
http://linked.open...n/vavai/riv/zamer	Výzkum vlastností jader a subjaderných částic a jejich interakcí
issn	1550-7998
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevD.84.071101
http://localhost/t...ganizacniJednotka	11320

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