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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F10%3A10062371%21RIV11-MSM-11320___
rdf:type
n9:Vysledek skos:Concept
dcterms:description
We have made the first observation of B-s(0) -} D-s(()*()+) D-s(()*()-) decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Y(5S) resonance. The branching fractions are measured to be B(B-s(0) -} Ds+Ds-) = (1.03(-0.32-0.25)(+0.39+0.26))% B(B-s(0) -} Ds*D-+/-(s)-/+) = (2.75(-0.71)(+0.83) +/- 0.69)%, and B(B-s(0) -} D-s*(+) D-s*(-)) = (3.08(-1.04-0.86)(+1.22+0.85))%; the sum is B[B-s(0) -} D-s(()*()+) D-s(()*()-)] = (6.85(-1.30-1.80)(+1.53+1.79))%. Assuming B-s(0) -} D-s(()*()+) D-s(()*()-) saturates decays to CP-even final states, the branching fraction determines the ratio Delta Gamma(s)/cos phi, where Delta Gamma(s) is the difference in widths between the two B-s-(B) over bar (s) mass eigenstates, and phi is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain Delta Gamma(s)/Delta Gamma(s) = 0.147(-0.030)(+0.036)(stat)(-0.041)(+0.042)(syst), where Gamma(s) is the mean decay width. We have made the first observation of B-s(0) -} D-s(()*()+) D-s(()*()-) decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Y(5S) resonance. The branching fractions are measured to be B(B-s(0) -} Ds+Ds-) = (1.03(-0.32-0.25)(+0.39+0.26))% B(B-s(0) -} Ds*D-+/-(s)-/+) = (2.75(-0.71)(+0.83) +/- 0.69)%, and B(B-s(0) -} D-s*(+) D-s*(-)) = (3.08(-1.04-0.86)(+1.22+0.85))%; the sum is B[B-s(0) -} D-s(()*()+) D-s(()*()-)] = (6.85(-1.30-1.80)(+1.53+1.79))%. Assuming B-s(0) -} D-s(()*()+) D-s(()*()-) saturates decays to CP-even final states, the branching fraction determines the ratio Delta Gamma(s)/cos phi, where Delta Gamma(s) is the difference in widths between the two B-s-(B) over bar (s) mass eigenstates, and phi is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain Delta Gamma(s)/Delta Gamma(s) = 0.147(-0.030)(+0.036)(stat)(-0.041)(+0.042)(syst), where Gamma(s) is the mean decay width.
dcterms:title
Observation of B-s(0) -} D-s(()*()) + D-s(()*()) Using e(+)e(-) Collisions and a Determination of the B-s-(B)over-bar(s) Width Difference Delta Gamma(s) Observation of B-s(0) -} D-s(()*()) + D-s(()*()) Using e(+)e(-) Collisions and a Determination of the B-s-(B)over-bar(s) Width Difference Delta Gamma(s)
skos:prefLabel
Observation of B-s(0) -} D-s(()*()) + D-s(()*()) Using e(+)e(-) Collisions and a Determination of the B-s-(B)over-bar(s) Width Difference Delta Gamma(s) Observation of B-s(0) -} D-s(()*()) + D-s(()*()) Using e(+)e(-) Collisions and a Determination of the B-s-(B)over-bar(s) Width Difference Delta Gamma(s)
skos:notation
RIV/00216208:11320/10:10062371!RIV11-MSM-11320___
n3:aktivita
n16:Z n16:P
n3:aktivity
P(LA10033), Z(MSM0021620859)
n3:cisloPeriodika
20
n3:dodaniDat
n6:2011
n3:domaciTvurceVysledku
n11:8404666 n11:8616094 n11:1772597
n3:druhVysledku
n19:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
276125
n3:idVysledku
RIV/00216208:11320/10:10062371
n3:jazykVysledku
n7:eng
n3:klicovaSlova
DECAYS; SYSTEM; PHYSICS
n3:klicoveSlovo
n4:DECAYS n4:SYSTEM n4:PHYSICS
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[DEDB596885FB]
n3:nazevZdroje
Physical Review Letters
n3:obor
n13:BF
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
128
n3:projekt
n18:LA10033
n3:rokUplatneniVysledku
n6:2010
n3:svazekPeriodika
105
n3:tvurceVysledku
Schwartz, A. J. Esen, Sevda Kodyš, Peter Drásal, Zbyněk Adachi, I. Doležal, Zdeněk
n3:wos
000284052700004
n3:zamer
n5:MSM0021620859
s:issn
0031-9007
s:numberOfPages
6
n12:organizacniJednotka
11320