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Measurement of the mass difference and relative production rate of the Ωb- and Ξb- baryons

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成果类型:
期刊论文
作者:
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
通讯作者:
Aaij, R
作者机构:
[Jans, E.; Ketel, T.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Butter, J. S.; Koppenburg, P.; Klaver, S.; Galati, M. D.; Heijhoff, K.; Akiba, K.; Aaij, R.; Sole, S. Ferreres; Kostiuk, I.; Biolchini, A.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.
[Da Graca, U. De Freitas Carneiro; Gomes, A.; Fantini, L.; Miranda, J. M. De; dos Reis, A. C.; Falcao, L. N.; Bediaga, I. B.; Leite, J. Baptista de Souza; Torres, M. Cruz] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil.
[Hicheur, A.; Goicochea, J. M. Otalora; Rodrigues, F. Ferreira; De Paula, L.; Gandelman, M.; Amato, S.] Univ Fed Rio De Janeiro UFRJ, Rio De Janeiro, Brazil.
[Hu, X.; Gu, C.; Gong, G.; Kang, Y.; Zhu, X.; Zeng, M.; Dong, C.; Zhang, L.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Chen, S.; Jiang, X.; Batsukh, B.; Zou, Q.] Inst High Energy Phys IHEP, Beijing, Peoples R China.
通讯机构:
[Aaij, R ] N
Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.
语种:
英文
期刊:
PHYSICAL REVIEW D
ISSN:
2470-0010
年:
2023
卷:
108
期:
5
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
The mass difference between the Omega -b and Xi -b baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1, and is found to be mo Omega -bthorn - mo Xi -bthorn 1/4 248.54? 0.51ostatthorn ? 0.38osystthorn MeV=c2. The mass of the Omega -b baryon is measured to be mo Omega -bthorn 1/4 6045.9 ? 0.5ostatthorn ? 0.6osystthorn MeV=c2. This is the most precise determination of the Omega -b mass to date. In addition, the production rate of Omega -b baryons relative to that of Xi -b baryons is measured for the first tim...

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