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Li, Cui
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Publications (10 of 187) Show all publications
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2020). Cross section measurement of e(+) e(-) -> eta ' J/psi from root S=4.178 to 4.600 GeV. Physical Review D: covering particles, fields, gravitation, and cosmology, 101(1), Article ID 012008.
Open this publication in new window or tab >>Cross section measurement of e(+) e(-) -> eta ' J/psi from root S=4.178 to 4.600 GeV
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2020 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 101, no 1, article id 012008Article in journal (Refereed) Published
Abstract [en]

The cross section of the process e(+) e(-) -> eta ' J/ psi is measured at center-of-mass (c.m.) energies from root S = 4.178 to 4.600 GeV using data samples corresponding to a total integrated luminosity of 11 fb(-1) collected with the BESIII detector operating at the BEPCII storage ring. The dependence of the cross section on root S shows an enhancement around 4.2 GeV. While the shape of the cross section cannot be fully explained with a single psi(4160) or psi(4260) state, a coherent sum of the two states does provide a reasonable description of the data.

Place, publisher, year, edition, pages
American Physical Society, 2020
National Category
Subatomic Physics Astronomy, Astrophysics and Cosmology
Identifiers
urn:nbn:se:uu:diva-406604 (URN)10.1103/PhysRevD.101.012008 (DOI)000508453600003 ()
Funder
EU, European Research Council, 758462Knut and Alice Wallenberg Foundation, 2016.0157Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.101.012008

Available from: 2020-03-10 Created: 2020-03-10 Last updated: 2020-03-30Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2020). Measurement of J/psi -> Xi(1530+)(-) (Xi)over-bar(+) and evidence for the radiative decay Xi(153)(-) -> gamma Xi(-). Physical Review D: covering particles, fields, gravitation, and cosmology, 101(1), Article ID 012004.
Open this publication in new window or tab >>Measurement of J/psi -> Xi(1530+)(-) (Xi)over-bar(+) and evidence for the radiative decay Xi(153)(-) -> gamma Xi(-)
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2020 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 101, no 1, article id 012004Article in journal (Refereed) Published
Abstract [en]

The SU(3)-flavor violating decay J/psi -> Xi(1530)(-) (Xi) over bar (+) + c.c. is studied using (1310.6 +/- 7.0) x 10(6) J/psi events collected with the BESIII detector at BEPCII, and the branching fraction is measured to be B(J/psi -> Xi(1530)(-) (Xi) over bar (+) + c.c.) = (3.17 +/- 0.02(stat) +/- 0.08(syst)) x 10(-4). This result is consistent with previous measurements with an order of magnitude improved precision. The angular parameter for this decay is measured for the first time and is found to be alpha = -0.21 +/- 0.04(stat) +/- 0.06(syst). In addition, we report evidence for the radiative decay Xi(1530)(-) -> gamma Xi(-) with a significance of 3.9 sigma, including the systematic uncertainties. The 90% confidence level upper limit on the branching fraction is determined to be B(Xi(1530)(-) -> gamma Xi(-)) <= 3.7%.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2020
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-403499 (URN)10.1103/PhysRevD.101.012004 (DOI)000506592000001 ()
Funder
Knut and Alice Wallenberg Foundation, 2016.0157Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.101.012004

Available from: 2020-01-30 Created: 2020-01-30 Last updated: 2020-01-30Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2020). Measurement of the Cross Section for e(+)e(-) -> Xi(-)Xi(+)and Observation of an Excited Xi Baryon. Physical Review Letters, 124(3), Article ID 032002.
Open this publication in new window or tab >>Measurement of the Cross Section for e(+)e(-) -> Xi(-)Xi(+)and Observation of an Excited Xi Baryon
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2020 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 124, no 3, article id 032002Article in journal (Refereed) Published
Abstract [en]

Using a total of 11.0 fb(-1) of e(+)e(-) collision data with center-of-mass energies between 4.009 and 4.6 GeV and collected with the BESIII detector at BEPCII, we measure fifteen exclusive cross sections and effective form factors for the process e(+)e(-) -> Xi(-)Xi(+) by means of a single baryon-tag method. After performing a fit to the dressed cross section of e(+)e(-)-> Xi(-)Xi(+) no significant psi(4230) or psi(4260) resonance is observed in the Xi(-)Xi(+) final states, and upper limits at the 90% confidence level on T B-ee for the processes psi(4230)psi/(4260) -> Xi(-)Xi(+) are determined. In addition, an excited Xi baryon at 1820 MeV/c(2) is observed with a statistical significance of 6.2-6.5 sigma by including the systematic uncertainty, and the mass and width are measured to be M = (1825.5 +/- 4.7 +/- 4.7) MeV/c(2) and Gamma = (17.0 +/- 15.0 +/- 7.9) MeV, which confirms the existence of the J(P) =3-/2 state Xi (1820).

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2020
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-406603 (URN)10.1103/PhysRevLett.124.032002 (DOI)000509507700003 ()32031834 (PubMedID)
Funder
EU, European Research Council, 758462Knut and Alice Wallenberg Foundation, 2016.0157Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevLett.124.032002

Available from: 2020-03-10 Created: 2020-03-10 Last updated: 2020-03-10Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2020). Partial wave analysis of psi(3686) -> K+ K- eta. Physical Review D: covering particles, fields, gravitation, and cosmology, 101(3), Article ID 032008.
Open this publication in new window or tab >>Partial wave analysis of psi(3686) -> K+ K- eta
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2020 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 101, no 3, article id 032008Article in journal (Refereed) Published
Abstract [en]

Using a sample of (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector, we perform the first partial wave analysis of psi(3686) -> K+K- eta. In addition to the well established states, phi(1020), phi(1680), and K-3(*)(1780), contributions from X(1750), rho(2150), rho(3)(2250), and K-2* (1980) are also observed. The X(1750) state is determined to be a 1(--) resonance. The simultaneous observation of the phi(1680) and X(1750) indicates that the X(1750), with previous observations in photoproduction, is distinct from the phi(1680). The masses, widths, branching fractions of psi(3686) -> K+K- eta, and the intermediate resonances are also measured.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2020
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-407980 (URN)10.1103/PhysRevD.101.032008 (DOI)000517252200002 ()
Funder
Knut and Alice Wallenberg Foundation, 2016.0157Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.101.032008

Available from: 2020-04-03 Created: 2020-04-03 Last updated: 2020-04-03Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2020). Search for baryon and lepton number violating decays D+ -> (Lambda)over-bar((Sigma)over-bar(0))e(+) and D+ -> Lambda(Sigma(0))e(+). Physical Review D: covering particles, fields, gravitation, and cosmology, 101(3), Article ID 031102.
Open this publication in new window or tab >>Search for baryon and lepton number violating decays D+ -> (Lambda)over-bar((Sigma)over-bar(0))e(+) and D+ -> Lambda(Sigma(0))e(+)
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2020 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 101, no 3, article id 031102Article in journal (Refereed) Published
Abstract [en]

Using a 2.93 fb(-1) data sample of electron-positron collisions taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, which corresponds to (8296 +/- 31 +/- 64) x 10(3) D+ D- pairs, we search for the baryon and lepton number violating decays D+ -> (Lambda) over bar((Sigma) over bar (0))e(+) and D+ -> Lambda(Sigma(0))e(+). No obvious signals are found with the current statistics and upper limits on the branching fractions of these four decays are set at the level of 10(-6) at 90% confidence level.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2020
National Category
Subatomic Physics Astronomy, Astrophysics and Cosmology
Identifiers
urn:nbn:se:uu:diva-407460 (URN)10.1103/PhysRevD.101.031102 (DOI)000513217400002 ()
Funder
Knut and Alice Wallenberg Foundation, 2016.0157Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.101.031102

Available from: 2020-03-26 Created: 2020-03-26 Last updated: 2020-03-26Bibliographically approved
Ablikim, M., Ikegami Andersson, W., Johansson, T., Kupsc, A., Li, C., Papenbrock, M., . . . Zou, J. H. (2019). Amplitude analysis and branching fraction measurement of D-0 -> K-pi(+)pi(0)pi(0). Physical Review D: covering particles, fields, gravitation, and cosmology, 99(9), Article ID 092008.
Open this publication in new window or tab >>Amplitude analysis and branching fraction measurement of D-0 -> K-pi(+)pi(0)pi(0)
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2019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 99, no 9, article id 092008Article in journal (Refereed) Published
Abstract [en]

Utilizing the dataset corresponding to an integrated luminosity of 2.93 fb(-1) at root s = 3.773 GeV collected by the BESIII detector, we report the first amplitude analysis and branching fraction measurement of the D-0 -> K- pi(+)pi(0)pi(0) decay. We investigate the substructures and determine the relative fractions and the phases among the different intermediate processes. Our results are used to provide an accurate detection efficiency and allow measurement of B(D-0 -> K- pi(+)pi(0)pi(0)) = (8.86 +/- 0.13(stat) +/- 0.19(syst))%.

Place, publisher, year, edition, pages
American Physical Society, 2019
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-389821 (URN)10.1103/PhysRevD.99.092008 (DOI)000470859800001 ()
Funder
Knut and Alice Wallenberg Foundation, 2016.0157Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.99.092008

Available from: 2019-07-30 Created: 2019-07-30 Last updated: 2019-07-30Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2019). Amplitude analysis of D+-> K-S(0)pi(+)pi(+)pi(-). Physical Review D: covering particles, fields, gravitation, and cosmology, 100(7), Article ID 072008.
Open this publication in new window or tab >>Amplitude analysis of D+-> K-S(0)pi(+)pi(+)pi(-)
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2019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 100, no 7, article id 072008Article in journal (Refereed) Published
Abstract [en]

The decay D+-> K-S(0)pi(+)pi(+)pi(-) is studied with an amplitude analysis using a data set of 2.93 fb(-1) of e(+)e(-) collisions at the psi(3770) peak accumulated by the BESIII detector. Intermediate states and nonresonant components, and their relative fractions and phases, have been determined. The significant amplitudes, which contribute to the model that best fits the data, are composed of five quasitwo-body decays K(S)(0)a(1)(1260)(+), (K) over bar (1)(1270)(0)pi(+) (K) over bar (1)(1400)(0)pi(+), (K) over bar (1)(1650)(0)pi(+), and (K) over bar (1460)(0)pi(+), a three-body decay K-S(0)pi(+)rho(0), as well as a nonresonant component K-S(0)pi(+)pi(+)pi(-). The dominant amplitude is K(S)(0)a(1)(1260)(+), with a fit fraction of (40.3 +/- 2.1 +/- 2.9)%, where the first and second uncertainties are statistical and systematic, respectively.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2019
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-396707 (URN)10.1103/PhysRevD.100.072008 (DOI)000491169300002 ()
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.100.072008

Available from: 2019-11-08 Created: 2019-11-08 Last updated: 2019-11-08Bibliographically approved
Ablikim, M., Ikegami Andersson, W., Johansson, T., Kupsc, A., Li, C., Papenbrock, M., . . . Zou, J. H. (2019). Amplitude Analysis of D-s(+) -> pi(+)pi(0)eta and First Observation of the W-Annihilation Dominant Decays D-s(+) -> a(0)(980)(+)pi(0) and D-s(+) -> a(0)(980)(0)pi(+). Physical Review Letters, 123(11), Article ID 112001.
Open this publication in new window or tab >>Amplitude Analysis of D-s(+) -> pi(+)pi(0)eta and First Observation of the W-Annihilation Dominant Decays D-s(+) -> a(0)(980)(+)pi(0) and D-s(+) -> a(0)(980)(0)pi(+)
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2019 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 123, no 11, article id 112001Article in journal (Refereed) Published
Abstract [en]

We present the first amplitude analysis of the decay D-s(+) -> pi(+)pi(0)eta. We use an e(+)e(-) collision data sample corresponding to an integrated luminosity of 3.19 fb(-1) collected with the BESIII detector at a center-of-mass energy of 4.178 GeV. We observe for the first time the W-annihilation dominant decays D-s(+) -> a(0)(980)(+)pi(0) and D-s(+) -> a(0)(980)(0)pi(+). We measure the absolute branching fraction B(D-s(+) -> a(0)(980)(+(0))pi(0(+)), a(0)(980)(+(0)) -> pi(+(0)())eta = (1.46 +/- 0.15(stat )+/- 0.23 sys)%, which is larger than the branching fractions of other measured pure W-annihilation decays by at least one order of magnitude. In addition, we measure the branching fraction of D-s(+) -> pi(+)pi(0)eta with significantly improved precision.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2019
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-395314 (URN)10.1103/PhysRevLett.123.112001 (DOI)000485315000004 ()31573268 (PubMedID)
Funder
Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevLett.123.112001

Available from: 2019-10-18 Created: 2019-10-18 Last updated: 2019-10-18Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2019). Complete Measurement of the Λ Electromagnetic Form Factors. Physical Review Letters, 123(12), Article ID 122003.
Open this publication in new window or tab >>Complete Measurement of the Λ Electromagnetic Form Factors
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2019 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 123, no 12, article id 122003Article in journal (Refereed) Published
Abstract [en]

The exclusive process e(+)e(-) -> Lambda(Lambda) over bar, with Lambda -> p pi(-) and (Lambda) over bar -> (p) over bar pi(+), has been studied at root s = 2.396 GeV for measurement of the timelike Lambda electric and magnetic form factors, G(E) and G(M). A data sample, corresponding to an integrated luminosity of 66.9 pb(-1), was collected with the BESIII detector for this purpose. A multidimensional analysis with a complete decomposition of the spin structure of the reaction enables a determination of the modulus of the ratio R = vertical bar G(E)/G(M)vertical bar and, for the first time for any baryon, the relative phase Delta Phi = Phi(E) - Phi(M). The resulting values are R = 0.96 +/- 0.14(stat) +/- 0.02(syst) and Phi(F) = 37 degrees +/- 12 degrees (stat) +/- 6 degrees (syst), respectively. These are obtained using the recently established and most precise value of the asymmetry parameter alpha(Lambda) = 0.750 +/- 0.010 measured by BESIII. In addition, the cross section is measured with unprecedented precision to be sigma = 118.7 +/- 5.3(stat) +/- 5.1(syst) pb, which corresponds to an effective form factor of vertical bar G vertical bar = 0.123 +/- 0.003(stat) +/- 0.003(syst). The contribution from two-photon exchange is found to be negligible. Our result enables the first complete determination of baryon timelike electromagnetic form factors.

National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-395800 (URN)10.1103/PhysRevLett.123.122003 (DOI)000487743500004 ()
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation, 2016.0157
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevLett.123.122003

Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25Bibliographically approved
Ablikim, M., Adlarson, P., Biernat, J., Ikegami Andersson, W., Johansson, T., Kupsc, A., . . . Zou, J. H. (2019). Cross section measurements of e(+) e(-) -> omega chi(c0) from root s=4.178 to 4.278 GeV. Physical Review D: covering particles, fields, gravitation, and cosmology, 99(9), Article ID 091103.
Open this publication in new window or tab >>Cross section measurements of e(+) e(-) -> omega chi(c0) from root s=4.178 to 4.278 GeV
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2019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 99, no 9, article id 091103Article in journal (Refereed) Published
Abstract [en]

The cross section of the process e(+)e(-) -> omega chi(C0) is measured at center -of -mass energies from root s = 4.178 to 4.278 GeV using a data sample of 7 fb(-1) collected with the BESIII detector operating at the BEPCII storage ring. The dependence of the cross section on root s shows a resonant structure with mass of (4218.5 +/- 1.6(stat) +/- 4.0(syst)) MeV/c(2) and width of (28.2 +/- 3.9(stat) +/- 1.6(syst)) MeV, respectively. This observation confirms and improves upon the result of a previous study. The angular distribution of the e(+) e(-) ->omega chi(C0) process is extracted for the first time.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC, 2019
National Category
Subatomic Physics
Identifiers
urn:nbn:se:uu:diva-386159 (URN)10.1103/PhysRevD.99.091103 (DOI)000468220800001 ()
Funder
Swedish Research CouncilGerman Research Foundation (DFG)
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.99.091103

Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-06-20Bibliographically approved
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