Measurement of the absolute branching fraction for Λc        +→Λμ+νμ

The BESIII Collaboration

doi:10.1016/j.physletb.2017.01.047

Measurement of the absolute branching fraction for Λ_c ⁺→Λμ⁺ν_μ

The BESIII Collaboration

Результат исследования: Научные публикации в периодических изданиях › статья

25 Цитирования (Scopus)

Аннотация

We report the first measurement of the absolute branching fraction for Λ_c ⁺→Λμ⁺ν_μ. This measurement is based on a sample of e⁺e⁻ annihilation data produced at a center-of-mass energy s=4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pb⁻¹. The branching fraction is determined to be B(Λ_c ⁺→Λμ⁺ν_μ)=(3.49±0.46(stat)±0.27(syst))%. In addition, we calculate the ratio B(Λ_c ⁺→Λμ⁺ν_μ)/B(Λ_c ⁺→Λe⁺ν_e) to be 0.96±0.16(stat)±0.04(syst).

Язык оригинала	английский
Страницы (с-по)	42-47
Число страниц	6
Журнал	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Том	767
DOI	https://doi.org/10.1016/j.physletb.2017.01.047
Состояние	Опубликовано - 10 апр 2017

Доступ к документу

10.1016/j.physletb.2017.01.047

Link to publication in Scopus

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Цитировать

The BESIII Collaboration (2017). Measurement of the absolute branching fraction for Λ_c ⁺→Λμ⁺ν_μ. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 767, 42-47. https://doi.org/10.1016/j.physletb.2017.01.047

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title = "Measurement of the absolute branching fraction for Λc +→Λμ+νμ",

abstract = "We report the first measurement of the absolute branching fraction for Λc +→Λμ+νμ. This measurement is based on a sample of e+e− annihilation data produced at a center-of-mass energy s=4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pb−1. The branching fraction is determined to be B(Λc +→Λμ+νμ)=(3.49±0.46(stat)±0.27(syst))%. In addition, we calculate the ratio B(Λc +→Λμ+νμ)/B(Λc +→Λe+νe) to be 0.96±0.16(stat)±0.04(syst).",

keywords = "Absolute branching fraction, BESIII, Semi-leptonic decay, Λ, CHARMED BARYONS, RATES, HEAVY-QUARK, PREDICTIONS, MODEL, SEMILEPTONIC DECAYS, QCD SUM-RULES, Lambda(+)(c)",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and S. Ahmed and Ai, {X. C.} and O. Albayrak and M. Albrecht and Ambrose, {D. J.} and A. Amoroso and An, {F. F.} and Q. An and Bai, {J. Z.} and O. Bakina and {Baldini Ferroli}, R. and Y. Ban and Bennett, {D. W.} and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and Bian, {J. M.} and F. Bianchi and E. Boger and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, {G. F.} and Cetin, {S. A.} and Chang, {J. F.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and S. Chen and Chen, {S. J.} and X. Chen and Chen, {X. R.} and Chen, {Y. B.} and Chu, {X. K.} and G. Cibinetto and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

year = "2017",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2017.01.047",

language = "English",

volume = "767",

pages = "42--47",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

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Measurement of the absolute branching fraction for Λ_c ⁺→Λμ⁺ν_μ. / The BESIII Collaboration.

В: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Том 767, 10.04.2017, стр. 42-47.

Результат исследования: Научные публикации в периодических изданиях › статья

TY - JOUR

T1 - Measurement of the absolute branching fraction for Λc +→Λμ+νμ

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, J. Z.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Ban, Y.

AU - Bennett, D. W.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bian, J. M.

AU - Bianchi, F.

AU - Boger, E.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Cakir, O.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cetin, S. A.

AU - Chang, J. F.

AU - Chelkov, G.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, S.

AU - Chen, S. J.

AU - Chen, X.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Chu, X. K.

AU - Cibinetto, G.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Deng, Z. Y.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2017/4/10

Y1 - 2017/4/10

N2 - We report the first measurement of the absolute branching fraction for Λc +→Λμ+νμ. This measurement is based on a sample of e+e− annihilation data produced at a center-of-mass energy s=4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pb−1. The branching fraction is determined to be B(Λc +→Λμ+νμ)=(3.49±0.46(stat)±0.27(syst))%. In addition, we calculate the ratio B(Λc +→Λμ+νμ)/B(Λc +→Λe+νe) to be 0.96±0.16(stat)±0.04(syst).

AB - We report the first measurement of the absolute branching fraction for Λc +→Λμ+νμ. This measurement is based on a sample of e+e− annihilation data produced at a center-of-mass energy s=4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pb−1. The branching fraction is determined to be B(Λc +→Λμ+νμ)=(3.49±0.46(stat)±0.27(syst))%. In addition, we calculate the ratio B(Λc +→Λμ+νμ)/B(Λc +→Λe+νe) to be 0.96±0.16(stat)±0.04(syst).

KW - Absolute branching fraction

KW - BESIII

KW - Semi-leptonic decay

KW - Λ

KW - CHARMED BARYONS

KW - RATES

KW - HEAVY-QUARK

KW - PREDICTIONS

KW - MODEL

KW - SEMILEPTONIC DECAYS

KW - QCD SUM-RULES

KW - Lambda(+)(c)

UR - http://www.scopus.com/inward/record.url?scp=85011102723&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2017.01.047

DO - 10.1016/j.physletb.2017.01.047

M3 - Article

AN - SCOPUS:85011102723

VL - 767

SP - 42

EP - 47

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -