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1

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Observation of the decay ψ(3686) → $$ {\Sigma}^{-}{\overline{\Sigma}}^{+} $$ and measurement of its angular distribution

The BESIII collaboration ; Ablikim, M. ; Achasov, M. N. ; [et al.]

Springer Science and Business Media LLC ; 2022

In: Journal of High Energy Physics Vol. 2022, No. 12 ( 2022-12-05)

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In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2022, No. 12 ( 2022-12-05)

Abstract: Using (448 . 1 ± 2 . 9) × 10 6 ψ (3686) events collected with the BESIII detector at the BEPCII collider, the decay ψ (3686) → $$ {\Sigma}^{-}{\overline{\Sigma}}^{+} $$ Σ − Σ ¯ + is observed for the first time with a branching fraction of (2 . 82 ± 0 . 04 stat . ± 0 . 08 syst . ) × 10 − 4 , and the angular parameter α Σ − is measured to be 0 . 96 ± 0 . 09 stat . ± 0 . 03 syst . .

Type of Medium: Online Resource

ISSN: 1029-8479

URL: Article

DOI: 10.1007/JHEP12(2022)016

Language: English

Publisher: Springer Science and Business Media LLC

Publication Date: 2022

detail.hit.zdb_id: 2027350-2

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2

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Study of e+e− → γϕJ/ψ from $$ \sqrt{s} $$ = 4.600 to 4.951 GeV

The BESIII collaboration ; Ablikim, M. ; Achasov, M. N. ; [et al.]

Springer Science and Business Media LLC ; 2023

In: Journal of High Energy Physics Vol. 2023, No. 1 ( 2023-01-24)

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In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2023, No. 1 ( 2023-01-24)

Abstract: Using data samples with an integrated luminosity of 6 . 4 fb − 1 collected by the BESIII detector operating at the BEPCII storage ring, the process of e + e − → γϕJ/ψ is studied. The processes of e + e − → ϕχ c 1 , c 2 , χ c 1 , c 2 → γJ/ψ are observed with a significance of more than 10 σ . The $$ \sqrt{s} $$ s -dependent cross section of e + e − → ϕχ c 1 , c 2 is measured between 4.600 and 4.951 GeV, and evidence of a resonance structure is found for the first time in the ϕχ c 2 process. We also search for the processes of e + e − → γX (4140), γX (4274) and γX (4500) via the γϕJ/ψ final state, but no obvious structures are found. The upper limits on the production cross section times the branching fraction for these processes at the 90% confidence level are reported.

Type of Medium: Online Resource

ISSN: 1029-8479

URL: Article

DOI: 10.1007/JHEP01(2023)132

Language: English

Publisher: Springer Science and Business Media LLC

Publication Date: 2023

detail.hit.zdb_id: 2027350-2

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3

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Measurement of the cross section of e+e− → ηπ+π− at center-of-mass energies from 3.872 GeV to 4.700 GeV

The BESIII collaboration ; Ablikim, M. ; Achasov, M. N. ; [et al.]

Springer Science and Business Media LLC ; 2022

In: Journal of High Energy Physics Vol. 2022, No. 12 ( 2022-12-27)

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In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2022, No. 12 ( 2022-12-27)

Abstract: Using data samples with an integrated luminosity of 19 fb − 1 at twenty-eight center-of-mass energies from 3.872 GeV to 4.700 GeV collected with the BESIII detector at the BEPCII electron-positron collider, the process e + e − → ηπ + π − and the intermediate process e + e − → ηρ 0 are studied for the first time. The Born cross sections are measured. No significant resonance structure is observed in the cross section lineshape.

Type of Medium: Online Resource

ISSN: 1029-8479

URL: Article

DOI: 10.1007/JHEP12(2022)153

Language: English

Publisher: Springer Science and Business Media LLC

Publication Date: 2022

detail.hit.zdb_id: 2027350-2

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4

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Observation of e+e− → π0π0ψ2(3823)

The BESIII collaboration ; Ablikim, M. ; Achasov, M. N. ; [et al.]

Springer Science and Business Media LLC ; 2023

In: Journal of High Energy Physics Vol. 2023, No. 2 ( 2023-02-16)

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In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2023, No. 2 ( 2023-02-16)

Abstract: Using a data sample corresponding to an integrated luminosity of 11.3 fb − 1 collected at center-of-mass energies from 4.23 to 4.70 GeV with the BESIII detector, we observe the process e + e − → π 0 π 0 ψ 2 (3823) for the first time with a statistical significance of 6 . 0 standard deviations. The ratio of average cross sections for e + e − → π 0 π 0 ψ 2 (3823) and π + π − ψ 2 (3823) is determined to be $$ \mathcal{R}=\frac{\sigma \left[{e}^{+}{e}^{-}\to {\pi}^0{\pi}^0{\psi}_2(3823)\right]}{\sigma \left[{e}^{+}{e}^{-}\to {\pi}^{+}{\pi}^{-}{\psi}_2(3823)\right] }=0.57\pm 0.14\pm 0.05 $$ R = σ e + e − → π 0 π 0 ψ 2 3823 σ e + e − → π + π − ψ 2 3823 = 0.57 ± 0.14 ± 0.05 , which is consistent with expectations from isospin symmetry. Here and below, the first uncertainties are statistical and the second are systematic. The mass of the ψ 2 (3823) is measured to be M [ ψ 2 (3823)] = 3824 . 5 ± 2 . 4 ± 1 . 0 MeV/ c 2 . Due to the limited data sample, an upper limit of 18.8 MeV at 90% confidence level is set on the intrinsic width of ψ 2 (3823).

Type of Medium: Online Resource

ISSN: 1029-8479

URL: Article

DOI: 10.1007/JHEP02(2023)171

Language: English

Publisher: Springer Science and Business Media LLC

Publication Date: 2023

detail.hit.zdb_id: 2027350-2

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5

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Study of the e+e− → π+π−ω process at center-of-mass energies between 4.0 and 4.6 GeV

The BESIII collaboration ; Ablikim, M. ; Achasov, M. N. ; [et al.]

Springer Science and Business Media LLC ; 2023

In: Journal of High Energy Physics Vol. 2023, No. 8 ( 2023-08-24)

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In: Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2023, No. 8 ( 2023-08-24)

Abstract: Using 15 . 6 fb − 1 of e + e − collision data collected at twenty-four center-of-mass energies from 4 . 0 to 4 . 6 GeV with the BESIII detector, the helicity amplitudes of the process e + e − → π + π − ω are analyzed for the first time. Born cross section measurements of two-body intermediate resonance states with statistical significance greater than 5 σ are presented, such as f 0 (500), f 0 (980), f 2 (1270), f 0 (1370), b 1 (1235) ± , and ρ (1450) ± . In addition, evidence of a resonance state in e + e − → π + π − ω production is found. The mass of this state obtained by line shape fitting is about 4 . 2 GeV/ c 2 , which is consistent with the production of ψ (4160) or Y (4220).

Type of Medium: Online Resource

ISSN: 1029-8479

URL: Article

DOI: 10.1007/JHEP08(2023)159

Language: English

Publisher: Springer Science and Business Media LLC

Publication Date: 2023

detail.hit.zdb_id: 2027350-2

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6

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Observation of Three Charmoniumlike States with J P C = 1 − − in e + e − → D * 0 D * − π +

Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; [et al.]

American Physical Society (APS) ; 2023

In: Physical Review Letters Vol. 130, No. 12 ( 2023-3-23)

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In: Physical Review Letters, American Physical Society (APS), Vol. 130, No. 12 ( 2023-3-23)

Type of Medium: Online Resource

ISSN: 0031-9007 , 1079-7114

URL: Article

DOI: 10.1103/PhysRevLett.130.121901

RVK:

UA 1000

RVK:

UA 6520

Language: English

Publisher: American Physical Society (APS)

Publication Date: 2023

detail.hit.zdb_id: 1472655-5

detail.hit.zdb_id: 208853-8

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7

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First Study of Reaction Ξ 0 n → Ξ − p Using Ξ 0 -Nucleus Scattering at an Electron-Positron Collider

Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; [et al.]

American Physical Society (APS) ; 2023

In: Physical Review Letters Vol. 130, No. 25 ( 2023-6-21)

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In: Physical Review Letters, American Physical Society (APS), Vol. 130, No. 25 ( 2023-6-21)

Type of Medium: Online Resource

ISSN: 0031-9007 , 1079-7114

URL: Article

DOI: 10.1103/PhysRevLett.130.251902

RVK:

UA 1000

RVK:

UA 6520

Language: English

Publisher: American Physical Society (APS)

Publication Date: 2023

detail.hit.zdb_id: 1472655-5

detail.hit.zdb_id: 208853-8

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8

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Search for baryon and lepton number violating decay D ± → n ( n ¯ ) e ±

Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; [et al.]

American Physical Society (APS) ; 2022

In: Physical Review D Vol. 106, No. 11 ( 2022-12-26)

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In: Physical Review D, American Physical Society (APS), Vol. 106, No. 11 ( 2022-12-26)

Type of Medium: Online Resource

ISSN: 2470-0010 , 2470-0029

URL: Article

DOI: 10.1103/PhysRevD.106.112009

Language: English

Publisher: American Physical Society (APS)

Publication Date: 2022

detail.hit.zdb_id: 2844732-3

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9

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Improved measurement of the absolute branching fraction of inclusive semileptonic Λ c + decay

Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; [et al.]

American Physical Society (APS) ; 2023

In: Physical Review D Vol. 107, No. 5 ( 2023-3-17)

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In: Physical Review D, American Physical Society (APS), Vol. 107, No. 5 ( 2023-3-17)

Type of Medium: Online Resource

ISSN: 2470-0010 , 2470-0029

URL: Article

DOI: 10.1103/PhysRevD.107.052005

Language: English

Publisher: American Physical Society (APS)

Publication Date: 2023

detail.hit.zdb_id: 2844732-3

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10

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Search for the semileptonic decay D s + → π 0 e + ν e

Ablikim, M. ; Achasov, M. N. ; Adlarson, P. ; [et al.]

American Physical Society (APS) ; 2022

In: Physical Review D Vol. 106, No. 11 ( 2022-12-12)

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In: Physical Review D, American Physical Society (APS), Vol. 106, No. 11 ( 2022-12-12)

Type of Medium: Online Resource

ISSN: 2470-0010 , 2470-0029

URL: Article

DOI: 10.1103/PhysRevD.106.112004

Language: English

Publisher: American Physical Society (APS)

Publication Date: 2022

detail.hit.zdb_id: 2844732-3

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