Observation of B{sup +{yields}}D*{sup 0{tau}+{nu}}{sub {tau}}and evidence for B{sup +{yields}}D{sup 0{tau}+{nu}}{sub {tau}}at Belle

Journal Article · Fri Oct 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.072005· OSTI ID:21421339

Bozek, A; Rozanska, M; Kapusta, P; Matyja, A; Ostrowicz, W; Stypula, J ^[1]; Adachi, I; Higuchi, T; Iwasaki, Y; Kichimi, H; Krokovny, P; Nakao, M; Nishida, S; Nozaki, T; Sakai, Y; Schuemann, J; Trabelsi, K; Uehara, S; Uno, S ^[2]; Aihara, H ^[3]

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1. H. Niewodniczanski Institute of Nuclear Physics, Krakow (Poland)
2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
3. Department of Physics, University of Tokyo, Tokyo (Japan)

We present measurements of B{sup +{yields}}D*{sup 0{tau}+{nu}}{sub {tau}}and B{sup +{yields}}D{sup 0{tau}+{nu}}{sub {tau}}decays in a data sample of 657x10{sup 6} BB pairs collected with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. We find 446{sub -56}{sup +58} B{sup +{yields}}D*{sup 0{tau}+{nu}}{sub {tau}}events with a significance of 8.1 standard deviations, and 146{sub -41}{sup +42} B{sup +{yields}}D{sup 0{tau}+{nu}}{sub {tau}}events with a significance of 3.5 standard deviations. The latter signal provides the first evidence for this decay mode. The measured branching fractions are B(B{sup +{yields}}D*{sup 0{tau}+{nu}}{sub {tau}})=(2.12{sub -0.27}{sup +0.28}(stat){+-}0.29(syst))% and B(B{sup +{yields}}D{sup 0{tau}+{nu}}{sub {tau}})=(0.77{+-}0.22(stat){+-}0.12(syst))%.

• OSTI ID: 21421339
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 7; Other Information: DOI: 10.1103/PhysRevD.82.072005; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B PLUS MESONS
BRANCHING RATIO
D NEUTRAL MESONS
PARTICLE DECAY
TAU NEUTRINOS
TAU PARTICLES
B MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
CHARMED MESONS
D MESONS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEAVY LEPTONS
LEPTONS
MASSLESS PARTICLES
MESONS
NEUTRINOS
PSEUDOSCALAR MESONS