From December 2019 to June 2021, the BESIII experiment collected approximately 5.85 fb(-1) of data at center-of-mass energies between 4.61 and 4.95 GeV. This is the highest collision energy BEPCII has reached to date. The accumulated e(+)e(-) annihilation data samples are useful for studying charmonium(-like) states and charmed-hadron decays. By adopting a novel method of analyzing the production of Lambda(+)(c)(Lambda) over bar (-)(c)pairs in e(+)e(-) annihilation, the center-of-mass energies are measured with a precision of similar to 0.6 MeV. Integrated luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha scattering. These measurements provide important inputs to analyses based on these data samples.

Luminosities and energies of e+ e- collision data taken between =4.61 GeV and 4.95 GeV at BESIII

A. Amoroso;F. Bianchi;A. Bortone;M. Destefanis;Mori F. De;L. Fava;S. Garbolino;M. Greco;J. F. Hu;L. Lavezzi;M. Maggiora;S. Marcello;A. Rivetti;S. Sosio;S. Spataro;L. Yan;
2022-01-01

Abstract

From December 2019 to June 2021, the BESIII experiment collected approximately 5.85 fb(-1) of data at center-of-mass energies between 4.61 and 4.95 GeV. This is the highest collision energy BEPCII has reached to date. The accumulated e(+)e(-) annihilation data samples are useful for studying charmonium(-like) states and charmed-hadron decays. By adopting a novel method of analyzing the production of Lambda(+)(c)(Lambda) over bar (-)(c)pairs in e(+)e(-) annihilation, the center-of-mass energies are measured with a precision of similar to 0.6 MeV. Integrated luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha scattering. These measurements provide important inputs to analyses based on these data samples.
2022
46
11
113003-1
113003-12
luminosity; center-of-mass energy; BESIII detector
M. Ablikim; M. N. Achasov; P. Adlarson; M. Albrecht; R. Aliberti; A. Amoroso; M. R. An; Q. An; X. H. Bai; Y. Bai; O. Bakina; Ferroli R. Baldini; I. Ba...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1887838
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