Measurements of weak decay asymmetries of Λ+c → pK0s, Λπ+, Σ+ π0, and Σ0π+

Standard

Measurements of weak decay asymmetries of Λ⁺_c → pK⁰_s, Λπ⁺, Σ⁺ π⁰, and Σ⁰π⁺. / BESIII Collaboration.

In: Physical Review D, Vol. 100, No. 7, 072004, 14.10.2019.

Research output: Contribution to journal › Article › peer-review

Harvard

BESIII Collaboration 2019, 'Measurements of weak decay asymmetries of Λ⁺_c → pK⁰_s, Λπ⁺, Σ⁺ π⁰, and Σ⁰π⁺', Physical Review D, vol. 100, no. 7, 072004. https://doi.org/10.1103/PhysRevD.100.072004

APA

BESIII Collaboration (2019). Measurements of weak decay asymmetries of Λ⁺_c → pK⁰_s, Λπ⁺, Σ⁺ π⁰, and Σ⁰π⁺. Physical Review D, 100(7), [072004]. https://doi.org/10.1103/PhysRevD.100.072004

Vancouver

BESIII Collaboration. Measurements of weak decay asymmetries of Λ⁺_c → pK⁰_s, Λπ⁺, Σ⁺ π⁰, and Σ⁰π⁺. Physical Review D. 2019 Oct 14;100(7):072004. doi: 10.1103/PhysRevD.100.072004

Author

BESIII Collaboration. / Measurements of weak decay asymmetries of Λ⁺_c → pK⁰_s, Λπ⁺, Σ⁺ π⁰, and Σ⁰π⁺. In: Physical Review D. 2019 ; Vol. 100, No. 7.

BibTeX

@article{1f72b3eb3fa94f679f1a992a381ce9db,

title = "Measurements of weak decay asymmetries of Λ+c → pK0s, Λπ+, Σ+ π0, and Σ0π+",

abstract = "Using e+e- → Λ+cΛ-c production from a 567 pb-1 data sample collected by BESIII at 4.6 GeV, a full angular analysis is carried out simultaneously on the four decay modes of Λ+c → pK0S, Λπ+, Σ+π0, and Σ0π+. For the first time, the Λ+c transverse polarization is studied in unpolarized e+e- collisions, where a nonzero effect is observed with a statistical significance of 2.1σ. The decay asymmetry parameters of the Λ+c weak hadronic decays into pK0S, Λπ+, Σ+π0 and Σ0π+ are measured to be 0.18 ± 0.43(stat) ± 0.14(syst), -0.80 ± 0.11(stat) ± 0.02(syst), -0.57 ± 0.10(stat) ± 0.07(syst), and -0.73 ± 0.17(stat) ± 0.07(syst), respectively. In comparison with previous results, the measurements for the Λπ+ and Σ+π0 modes are consistent but with improved precision, while the parameters for the pK0S and Σ0π+ modes are measured for the first time.",

keywords = "NONLEPTONIC DECAYS, PARAMETER, BARYONS",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and An, {F. F.} and Q. An and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and Y. Ban and K. Begzsuren and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Biernat and J. Bloms and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and A. Calcaterra and Cao, {G. F.} and N. Cao and Cetin, {S. A.} and J. Chai and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {Y. B.} and W. Cheng and G. Cibinetto and F. Cossio and Cui, {X. F.} and Dai, {H. L.} and Dai, {J. P.} and Dai, {X. C.} and A. Dbeyssi and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

year = "2019",

month = oct,

day = "14",

doi = "10.1103/PhysRevD.100.072004",

language = "English",

volume = "100",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "7",

}

RIS

TY - JOUR

T1 - Measurements of weak decay asymmetries of Λ+c → pK0s, Λπ+, Σ+ π0, and Σ0π+

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, Y.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Biernat, J.

AU - Bloms, J.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cao, N.

AU - Cetin, S. A.

AU - Chai, J.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, Y. B.

AU - Cheng, W.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Cui, X. F.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dai, X. C.

AU - Dbeyssi, A.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2019/10/14

Y1 - 2019/10/14

N2 - Using e+e- → Λ+cΛ-c production from a 567 pb-1 data sample collected by BESIII at 4.6 GeV, a full angular analysis is carried out simultaneously on the four decay modes of Λ+c → pK0S, Λπ+, Σ+π0, and Σ0π+. For the first time, the Λ+c transverse polarization is studied in unpolarized e+e- collisions, where a nonzero effect is observed with a statistical significance of 2.1σ. The decay asymmetry parameters of the Λ+c weak hadronic decays into pK0S, Λπ+, Σ+π0 and Σ0π+ are measured to be 0.18 ± 0.43(stat) ± 0.14(syst), -0.80 ± 0.11(stat) ± 0.02(syst), -0.57 ± 0.10(stat) ± 0.07(syst), and -0.73 ± 0.17(stat) ± 0.07(syst), respectively. In comparison with previous results, the measurements for the Λπ+ and Σ+π0 modes are consistent but with improved precision, while the parameters for the pK0S and Σ0π+ modes are measured for the first time.

AB - Using e+e- → Λ+cΛ-c production from a 567 pb-1 data sample collected by BESIII at 4.6 GeV, a full angular analysis is carried out simultaneously on the four decay modes of Λ+c → pK0S, Λπ+, Σ+π0, and Σ0π+. For the first time, the Λ+c transverse polarization is studied in unpolarized e+e- collisions, where a nonzero effect is observed with a statistical significance of 2.1σ. The decay asymmetry parameters of the Λ+c weak hadronic decays into pK0S, Λπ+, Σ+π0 and Σ0π+ are measured to be 0.18 ± 0.43(stat) ± 0.14(syst), -0.80 ± 0.11(stat) ± 0.02(syst), -0.57 ± 0.10(stat) ± 0.07(syst), and -0.73 ± 0.17(stat) ± 0.07(syst), respectively. In comparison with previous results, the measurements for the Λπ+ and Σ+π0 modes are consistent but with improved precision, while the parameters for the pK0S and Σ0π+ modes are measured for the first time.

KW - NONLEPTONIC DECAYS

KW - PARAMETER

KW - BARYONS

UR - http://www.scopus.com/inward/record.url?scp=85074357064&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.100.072004

DO - 10.1103/PhysRevD.100.072004

M3 - Article

AN - SCOPUS:85074357064

VL - 100

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 7

M1 - 072004

ER -

ID: 23378053