Observation of the decay Λ+c → ∑-π+π+π0

M. Ablikim; M. N. Achasov; S. Ahmed; M. Albrecht; A. Amoroso; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; J. G. Messchendorp; M. Tiemens; BESIII Collaboration

doi:10.1016/j.physletb.2017.06.065

Observation of the decay Λ⁺_c → ∑^-π⁺π⁺π⁰

M. Ablikim, M. N. Achasov, S. Ahmed, M. Albrecht, A. Amoroso, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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We report the first observation of the decayΛ⁺_c → ∑^-π⁺π⁺π⁰, based on data obtained in e(+)e(-) annihilations with an integrated luminosity of 567 pb(-1) at vs = 4.6 GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined to be (2.11 +/- 0.33(stat.) +/- 0.14(syst.))%. In addition, an improved measurement of B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined as (1.81 +/- 0.17(stat.) +/- 0.09(syst.))%

Originele taal-2	English
Pagina's (van-tot)	388-393
Aantal pagina's	6
Tijdschrift	Physics Letters B
Volume	772
DOI's	https://doi.org/10.1016/j.physletb.2017.06.065
Status	Published - 10-sep.-2017

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10.1016/j.physletb.2017.06.065Licentie: CC BY

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@article{4a0c8254197d42599d9de01c303f8c93,

title = "Observation of the decay Λ+c → ∑-π+π+π0",

abstract = "We report the first observation of the decayΛ+c → ∑-π+π+π0 , based on data obtained in e(+)e(-) annihilations with an integrated luminosity of 567 pb(-1) at vs = 4.6 GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined to be (2.11 +/- 0.33(stat.) +/- 0.14(syst.))%. In addition, an improved measurement of B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined as (1.81 +/- 0.17(stat.) +/- 0.09(syst.))%",

keywords = "CHARMED BARYONS , ANNIHILATION, ABSOLUTE BRANCHING FRACTION",

author = "M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and A. Amoroso and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and Messchendorp, {J. G.} and M. Tiemens and {BESIII Collaboration}",

year = "2017",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2017.06.065",

language = "English",

volume = "772",

pages = "388--393",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

}

TY - JOUR

T1 - Observation of the decay Λ+c → ∑-π+π+π0

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Amoroso, A.

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Messchendorp, J. G.

AU - Tiemens, M.

AU - BESIII Collaboration

PY - 2017/9/10

Y1 - 2017/9/10

N2 - We report the first observation of the decayΛ+c → ∑-π+π+π0 , based on data obtained in e(+)e(-) annihilations with an integrated luminosity of 567 pb(-1) at vs = 4.6 GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined to be (2.11 +/- 0.33(stat.) +/- 0.14(syst.))%. In addition, an improved measurement of B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined as (1.81 +/- 0.17(stat.) +/- 0.09(syst.))%

AB - We report the first observation of the decayΛ+c → ∑-π+π+π0 , based on data obtained in e(+)e(-) annihilations with an integrated luminosity of 567 pb(-1) at vs = 4.6 GeV. The data were collected with the BESIII detector at the BEPCII storage rings. The absolute branching fraction B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined to be (2.11 +/- 0.33(stat.) +/- 0.14(syst.))%. In addition, an improved measurement of B(Lambda(+)(c) -> Sigma(-)pi(+)pi(+)pi(0)) is determined as (1.81 +/- 0.17(stat.) +/- 0.09(syst.))%

KW - CHARMED BARYONS

KW - ANNIHILATION

KW - ABSOLUTE BRANCHING FRACTION

U2 - 10.1016/j.physletb.2017.06.065

DO - 10.1016/j.physletb.2017.06.065

M3 - Article

SN - 0370-2693

VL - 772

SP - 388

EP - 393

JO - Physics Letters B

JF - Physics Letters B

ER -

Observation of the decay Λ+c → ∑-π+π+π0

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Observation of the decay Λ⁺_c → ∑^-π⁺π⁺π⁰