Precision measurements of Ds+→ηe+νe and Ds+→η′e+νe

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Precision measurements of Ds+→ηe+νe and Ds+→η′e+νe. / The BESIII Collaboration ; Ачасов, Михаил Николаевич ; Мучной, Николай Юрьевич и др.

в: Physical Review D, Том 108, № 9, 092003, 06.11.2023.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{082901041c054a2ead70baf37a7e1d72,

title = "Precision measurements of Ds+→ηe+νe and Ds+→η′e+νe",

abstract = "Precision measurements of the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe are performed with 7.33 fb-1 of e+e- collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector. The branching fractions obtained are B(Ds+→ηe+νe)=(2.255±0.039stat±0.051syst)% and B(Ds+→η′e+νe)=(0.810±0.038stat±0.024syst)%. Combining these results with the B(D+→ηe+νe) and B(D+→η′e+νe) obtained from previous BESIII measurements, the η-η′ mixing angle in the quark flavor basis is determined to be φP=(40.0±2.0stat±0.6syst)°. Moreover, from the fits to the partial decay rates of Ds+→ηe+νe and Ds+→η′e+νe, the products of the hadronic transition form factors f+η(′)(0) and the modulus of the c→s Cabibbo-Kobayashi-Maskawa matrix element |Vcs| are determined by using different hadronic transition form factor parametrizations. Based on the two-parameter series expansion, the products f+η(0)|Vcs|=0.4519±0.0071stat±0.0065syst and f+η′(0)|Vcs|=0.525±0.024stat±0.009syst are extracted. All results determined in this work supersede those measured in the previous BESIII analyses based on the 3.19 fb-1 subsample of data at 4.178 GeV.",

author = "{BESIII Collaboration} and M. Ablikim and Ачасов, {Михаил Николаевич} and Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",

note = "Precision measurements of Ds+→ηe+νe and Ds+→η′e+νe / BESIII Collaboration // Physical Review D. – 2023. – Vol. 108, No. 9. – P. 092003. – DOI 10.1103/physrevd.108.092003.",

year = "2023",

month = nov,

day = "6",

doi = "10.1103/PhysRevD.108.092003",

language = "English",

volume = "108",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "9",

}

RIS

TY - JOUR

T1 - Precision measurements of Ds+→ηe+νe and Ds+→η′e+νe

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Ачасов, Михаил Николаевич

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Precision measurements of Ds+→ηe+νe and Ds+→η′e+νe / BESIII Collaboration // Physical Review D. – 2023. – Vol. 108, No. 9. – P. 092003. – DOI 10.1103/physrevd.108.092003.

PY - 2023/11/6

Y1 - 2023/11/6

N2 - Precision measurements of the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe are performed with 7.33 fb-1 of e+e- collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector. The branching fractions obtained are B(Ds+→ηe+νe)=(2.255±0.039stat±0.051syst)% and B(Ds+→η′e+νe)=(0.810±0.038stat±0.024syst)%. Combining these results with the B(D+→ηe+νe) and B(D+→η′e+νe) obtained from previous BESIII measurements, the η-η′ mixing angle in the quark flavor basis is determined to be φP=(40.0±2.0stat±0.6syst)°. Moreover, from the fits to the partial decay rates of Ds+→ηe+νe and Ds+→η′e+νe, the products of the hadronic transition form factors f+η(′)(0) and the modulus of the c→s Cabibbo-Kobayashi-Maskawa matrix element |Vcs| are determined by using different hadronic transition form factor parametrizations. Based on the two-parameter series expansion, the products f+η(0)|Vcs|=0.4519±0.0071stat±0.0065syst and f+η′(0)|Vcs|=0.525±0.024stat±0.009syst are extracted. All results determined in this work supersede those measured in the previous BESIII analyses based on the 3.19 fb-1 subsample of data at 4.178 GeV.

AB - Precision measurements of the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe are performed with 7.33 fb-1 of e+e- collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector. The branching fractions obtained are B(Ds+→ηe+νe)=(2.255±0.039stat±0.051syst)% and B(Ds+→η′e+νe)=(0.810±0.038stat±0.024syst)%. Combining these results with the B(D+→ηe+νe) and B(D+→η′e+νe) obtained from previous BESIII measurements, the η-η′ mixing angle in the quark flavor basis is determined to be φP=(40.0±2.0stat±0.6syst)°. Moreover, from the fits to the partial decay rates of Ds+→ηe+νe and Ds+→η′e+νe, the products of the hadronic transition form factors f+η(′)(0) and the modulus of the c→s Cabibbo-Kobayashi-Maskawa matrix element |Vcs| are determined by using different hadronic transition form factor parametrizations. Based on the two-parameter series expansion, the products f+η(0)|Vcs|=0.4519±0.0071stat±0.0065syst and f+η′(0)|Vcs|=0.525±0.024stat±0.009syst are extracted. All results determined in this work supersede those measured in the previous BESIII analyses based on the 3.19 fb-1 subsample of data at 4.178 GeV.

UR - https://www.elibrary.ru/item.asp?id=65443174

UR - https://www.mendeley.com/catalogue/cb546827-0368-3fa7-9918-8c1c0f25dd51/

U2 - 10.1103/PhysRevD.108.092003

DO - 10.1103/PhysRevD.108.092003

M3 - Article

VL - 108

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 9

M1 - 092003

ER -

ID: 68346600