Observation of a Resonant Structure in e+e-→K+K-π0π0

Standard

Observation of a Resonant Structure in e+e-→K+K-π0π0. / BESIII Collaboration.

In: Physical Review Letters, Vol. 124, No. 11, 112001, 20.03.2020.

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

Harvard

BESIII Collaboration 2020, 'Observation of a Resonant Structure in e+e-→K+K-π0π0', Physical Review Letters, vol. 124, no. 11, 112001. https://doi.org/10.1103/PhysRevLett.124.112001

APA

BESIII Collaboration (2020). Observation of a Resonant Structure in e+e-→K+K-π0π0. Physical Review Letters, 124(11), [112001]. https://doi.org/10.1103/PhysRevLett.124.112001

Vancouver

BESIII Collaboration. Observation of a Resonant Structure in e+e-→K+K-π0π0. Physical Review Letters. 2020 Mar 20;124(11):112001. doi: 10.1103/PhysRevLett.124.112001

Author

BESIII Collaboration. / Observation of a Resonant Structure in e+e-→K+K-π0π0. In: Physical Review Letters. 2020 ; Vol. 124, No. 11.

BibTeX

@article{834b9481a82a4a73a41abf5458a6cda2,

title = "Observation of a Resonant Structure in e+e-→K+K-π0π0",

abstract = "A partial-wave analysis is performed for the process e+e-→K+K-π0π0 at the center-of-mass energies ranging from 2.000 to 2.644 GeV. The data samples of e+e-collisions, collected by the BESIII detector at the BEPCII collider with a total integrated luminosity of 300 pb-1, are analyzed. The total Born cross sections for the process e+e-→K+K-π0π0, as well as the Born cross sections for the subprocesses e+e-→φπ0π0, K+(1460)K-, K1+(1400)K-, K1+(1270)K-, and K∗+(892)K∗-(892), are measured versus the center-of-mass energy. The corresponding results for e+e-→K+K-π0π0 and φπ0π0 are consistent with those of BABAR with better precision. By analyzing the cross sections for the four subprocesses, K+(1460)K-, K1+(1400)K-, K1+(1270)K-, and K∗+(892)K∗-(892), a structure with mass M=(2126.5±16.8±12.4) MeV/c2 and width Γ=(106.9±32.1±28.1) MeV is observed with an overall statistical significance of 6.3σ, although with very limited significance in the subprocesses e+e-→K1+(1270)K- A nd K∗+(892)K∗-(892). The resonant parameters of the observed structure suggest it can be identified with the φ(2170), thus the results provide valuable input to the internal nature of the φ(2170).",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and A. Amoroso and Q. An and A. Anita and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and I. Balossino 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 Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {X. R.} 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 D. Dedovich and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

year = "2020",

month = mar,

day = "20",

doi = "10.1103/PhysRevLett.124.112001",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "11",

}

RIS

TY - JOUR

T1 - Observation of a Resonant Structure in e+e-→K+K-π0π0

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Amoroso, A.

AU - An, Q.

AU - Anita, A.

AU - Bai, Y.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Balossino, I.

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 - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X. R.

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 - Dedovich, D.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2020/3/20

Y1 - 2020/3/20

N2 - A partial-wave analysis is performed for the process e+e-→K+K-π0π0 at the center-of-mass energies ranging from 2.000 to 2.644 GeV. The data samples of e+e-collisions, collected by the BESIII detector at the BEPCII collider with a total integrated luminosity of 300 pb-1, are analyzed. The total Born cross sections for the process e+e-→K+K-π0π0, as well as the Born cross sections for the subprocesses e+e-→φπ0π0, K+(1460)K-, K1+(1400)K-, K1+(1270)K-, and K∗+(892)K∗-(892), are measured versus the center-of-mass energy. The corresponding results for e+e-→K+K-π0π0 and φπ0π0 are consistent with those of BABAR with better precision. By analyzing the cross sections for the four subprocesses, K+(1460)K-, K1+(1400)K-, K1+(1270)K-, and K∗+(892)K∗-(892), a structure with mass M=(2126.5±16.8±12.4) MeV/c2 and width Γ=(106.9±32.1±28.1) MeV is observed with an overall statistical significance of 6.3σ, although with very limited significance in the subprocesses e+e-→K1+(1270)K- A nd K∗+(892)K∗-(892). The resonant parameters of the observed structure suggest it can be identified with the φ(2170), thus the results provide valuable input to the internal nature of the φ(2170).

AB - A partial-wave analysis is performed for the process e+e-→K+K-π0π0 at the center-of-mass energies ranging from 2.000 to 2.644 GeV. The data samples of e+e-collisions, collected by the BESIII detector at the BEPCII collider with a total integrated luminosity of 300 pb-1, are analyzed. The total Born cross sections for the process e+e-→K+K-π0π0, as well as the Born cross sections for the subprocesses e+e-→φπ0π0, K+(1460)K-, K1+(1400)K-, K1+(1270)K-, and K∗+(892)K∗-(892), are measured versus the center-of-mass energy. The corresponding results for e+e-→K+K-π0π0 and φπ0π0 are consistent with those of BABAR with better precision. By analyzing the cross sections for the four subprocesses, K+(1460)K-, K1+(1400)K-, K1+(1270)K-, and K∗+(892)K∗-(892), a structure with mass M=(2126.5±16.8±12.4) MeV/c2 and width Γ=(106.9±32.1±28.1) MeV is observed with an overall statistical significance of 6.3σ, although with very limited significance in the subprocesses e+e-→K1+(1270)K- A nd K∗+(892)K∗-(892). The resonant parameters of the observed structure suggest it can be identified with the φ(2170), thus the results provide valuable input to the internal nature of the φ(2170).

UR - http://www.scopus.com/inward/record.url?scp=85083041302&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.124.112001

DO - 10.1103/PhysRevLett.124.112001

M3 - Article

C2 - 32242687

AN - SCOPUS:85083041302

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 11

M1 - 112001

ER -

ID: 27907316