Observation of an a0 -like State with Mass of 1.817 GeV in the Study of Ds+ → KS0 K+π0 Decays

(BESIII Collaboration)

doi:10.1103/PhysRevLett.129.182001

Observation of an a0 -like State with Mass of 1.817 GeV in the Study of Ds+ → KS0 K+π0 Decays

(BESIII Collaboration)

Physics and Astronomy (Twin Cities)

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

38 Scopus citations

Abstract

Using e+e- annihilation data corresponding to an integrated luminosity of 6.32 fb-1 collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay Ds+→KS0K+π0 and determine the relative branching fractions and phases for intermediate processes. We observe an a0-like state with mass of 1.817 GeV in its decay to KS0K+ for the first time. In addition, we measure the ratio {B[Ds+→K̄∗(892)0K+]/B[Ds+→K̄0K∗(892)+]} to be 2.35-0.23stat+0.42±0.10syst. Finally, we provide a precision measurement of the absolute branching fraction B(Ds+→KS0K+π0)=(1.46±0.06stat±0.05syst)%.

Original language	English (US)
Article number	182001
Journal	Physical review letters
Volume	129
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.129.182001
State	Published - Oct 28 2022

Bibliographical note

Funding Information:
The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts No. 2020YFA0406400 and No. 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11875054, No. 11935015, No. 11935016, No. 11935018, No. 11961141012, No. 12022510, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12192260, No. 12192261, No. 12192262, No. 12192263, No. 12192264, and No. 12192265; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U2032104, No. U1732263, and No. U1832207; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contracts No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, UK under Contracts No. DH140054 and No. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374 and No. DE-SC-0012069.

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© 2022 authors. Published by the American Physical Society.

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@article{94d3eea66c2e45b6a6d2582469e9f596,

title = "Observation of an a0 -like State with Mass of 1.817 GeV in the Study of Ds+ → KS0 K+π0 Decays",

abstract = "Using e+e- annihilation data corresponding to an integrated luminosity of 6.32 fb-1 collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay Ds+→KS0K+π0 and determine the relative branching fractions and phases for intermediate processes. We observe an a0-like state with mass of 1.817 GeV in its decay to KS0K+ for the first time. In addition, we measure the ratio \{B[Ds+→{\=K}∗(892)0K+]/B[Ds+→{\=K}0K∗(892)+]\} to be 2.35-0.23stat+0.42±0.10syst. Finally, we provide a precision measurement of the absolute branching fraction B(Ds+→KS0K+π0)=(1.46±0.06stat±0.05syst)\%.",

author = "\{(BESIII Collaboration)\} and M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and M. Albrecht and R. Aliberti and A. Amoroso and An, \{M. R.\} and Q. An and Bai, \{X. H.\} and Y. Bai and O. Bakina and Ferroli, \{R. Baldini\} and I. Balossino and Y. Ban and V. Batozskaya and D. Becker and K. Begzsuren and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Bloms and A. Bortone and I. Boyko and Briere, \{R. A.\} and A. Brueggemann and H. Cai and X. Cai and A. Calcaterra and Cao, \{G. F.\} and N. Cao and Cetin, \{S. A.\} and Chang, \{J. F.\} and Chang, \{W. L.\} and G. Chelkov and C. Chen and G. Chen and Chen, \{H. S.\} and Chen, \{M. L.\} and Chen, \{S. J.\} and T. Chen and Chen, \{X. R.\} and Chen, \{X. T.\} and Chen, \{Y. B.\} and Chen, \{Z. J.\} and Cheng, \{W. S.\} and G. Cibinetto and F. Cossio and H. Muramatsu and Ron Poling",

note = "Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R\&D Program of China under Contracts No. 2020YFA0406400 and No. 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11875054, No. 11935015, No. 11935016, No. 11935018, No. 11961141012, No. 12022510, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12192260, No. 12192261, No. 12192262, No. 12192263, No. 12192264, and No. 12192265; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U2032104, No. U1732263, and No. U1832207; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contracts No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, UK under Contracts No. DH140054 and No. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374 and No. DE-SC-0012069. Publisher Copyright: {\textcopyright} 2022 authors. Published by the American Physical Society.",

year = "2022",

month = oct,

day = "28",

doi = "10.1103/PhysRevLett.129.182001",

language = "English (US)",

volume = "129",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "18",

}

TY - JOUR

T1 - Observation of an a0 -like State with Mass of 1.817 GeV in the Study of Ds+ → KS0 K+π0 Decays

AU - (BESIII Collaboration)

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Albrecht, M.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, M. R.

AU - An, Q.

AU - Bai, X. H.

AU - Bai, Y.

AU - Bakina, O.

AU - Ferroli, R. Baldini

AU - Balossino, I.

AU - Ban, Y.

AU - Batozskaya, V.

AU - Becker, D.

AU - Begzsuren, K.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bloms, J.

AU - Bortone, A.

AU - Boyko, I.

AU - Briere, R. A.

AU - Brueggemann, A.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cao, N.

AU - Cetin, S. A.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, C.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, T.

AU - Chen, X. R.

AU - Chen, X. T.

AU - Chen, Y. B.

AU - Chen, Z. J.

AU - Cheng, W. S.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Muramatsu, H.

AU - Poling, Ron

N1 - Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts No. 2020YFA0406400 and No. 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11875054, No. 11935015, No. 11935016, No. 11935018, No. 11961141012, No. 12022510, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12192260, No. 12192261, No. 12192262, No. 12192263, No. 12192264, and No. 12192265; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U2032104, No. U1732263, and No. U1832207; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contracts No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, UK under Contracts No. DH140054 and No. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374 and No. DE-SC-0012069. Publisher Copyright: © 2022 authors. Published by the American Physical Society.

PY - 2022/10/28

Y1 - 2022/10/28

N2 - Using e+e- annihilation data corresponding to an integrated luminosity of 6.32 fb-1 collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay Ds+→KS0K+π0 and determine the relative branching fractions and phases for intermediate processes. We observe an a0-like state with mass of 1.817 GeV in its decay to KS0K+ for the first time. In addition, we measure the ratio {B[Ds+→K̄∗(892)0K+]/B[Ds+→K̄0K∗(892)+]} to be 2.35-0.23stat+0.42±0.10syst. Finally, we provide a precision measurement of the absolute branching fraction B(Ds+→KS0K+π0)=(1.46±0.06stat±0.05syst)%.

AB - Using e+e- annihilation data corresponding to an integrated luminosity of 6.32 fb-1 collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay Ds+→KS0K+π0 and determine the relative branching fractions and phases for intermediate processes. We observe an a0-like state with mass of 1.817 GeV in its decay to KS0K+ for the first time. In addition, we measure the ratio {B[Ds+→K̄∗(892)0K+]/B[Ds+→K̄0K∗(892)+]} to be 2.35-0.23stat+0.42±0.10syst. Finally, we provide a precision measurement of the absolute branching fraction B(Ds+→KS0K+π0)=(1.46±0.06stat±0.05syst)%.

UR - https://www.scopus.com/pages/publications/85141937838

UR - https://www.scopus.com/pages/publications/85141937838#tab=citedBy

U2 - 10.1103/PhysRevLett.129.182001

DO - 10.1103/PhysRevLett.129.182001

M3 - Article

C2 - 36374689

AN - SCOPUS:85141937838

SN - 0031-9007

VL - 129

JO - Physical review letters

JF - Physical review letters

IS - 18

M1 - 182001

ER -

Observation of an a0 -like State with Mass of 1.817 GeV in the Study of Ds+ → KS0 K+π0 Decays

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