Effects of isospin violation in the e + e − → B (*) B¯ (*) cross sections

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Effects of isospin violation in the e ⁺ e ⁻ → B ^(*) B¯ ^(*) cross sections. / Bondar, A. E.; Milstein, A. I.; Mizuk, R. V. et al.

In: Journal of High Energy Physics, Vol. 2022, No. 5, 170, 05.2022.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{e99c97d99a314bdfaca43407c5c72637,

title = "Effects of isospin violation in the e + e − → B (*) B¯ (*) cross sections",

abstract = "Model estimates are obtained for the influence of Coulomb effects on the ratio of the cross sections for the production of charged and neutral BB¯ and B*B¯ * pairs in e+e− annihilation. It is shown that the difference between the masses of charged and neutral mesons obtained under the assumption that this ratio is constant on a scale of the order of the beam energy spread can differ from the true one by δM ∼ 0.03 MeV at the energy of Υ(5S) and by δM ∼ 0.4 MeV at the energy of Υ(4S). Thus, the errors given in the PDG for the difference between the masses of charged and neutral B mesons, based on the results obtained at the energy of Υ(4S), are strongly underestimated. Similar measurements at the energy of Υ(5S) will have an order of magnitude smaller systematic shift for the mass difference. This circumstance should be taken into account when planning future experiments at the B factory in KEK.",

keywords = "Bottom Quarks, Quarkonium",

author = "Bondar, {A. E.} and Milstein, {A. I.} and Mizuk, {R. V.} and Salnikov, {S. G.}",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = may,

doi = "10.1007/JHEP05(2022)170",

language = "English",

volume = "2022",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "5",

}

RIS

TY - JOUR

T1 - Effects of isospin violation in the e + e − → B (*) B¯ (*) cross sections

AU - Bondar, A. E.

AU - Milstein, A. I.

AU - Mizuk, R. V.

AU - Salnikov, S. G.

PY - 2022/5

Y1 - 2022/5

N2 - Model estimates are obtained for the influence of Coulomb effects on the ratio of the cross sections for the production of charged and neutral BB¯ and B*B¯ * pairs in e+e− annihilation. It is shown that the difference between the masses of charged and neutral mesons obtained under the assumption that this ratio is constant on a scale of the order of the beam energy spread can differ from the true one by δM ∼ 0.03 MeV at the energy of Υ(5S) and by δM ∼ 0.4 MeV at the energy of Υ(4S). Thus, the errors given in the PDG for the difference between the masses of charged and neutral B mesons, based on the results obtained at the energy of Υ(4S), are strongly underestimated. Similar measurements at the energy of Υ(5S) will have an order of magnitude smaller systematic shift for the mass difference. This circumstance should be taken into account when planning future experiments at the B factory in KEK.

AB - Model estimates are obtained for the influence of Coulomb effects on the ratio of the cross sections for the production of charged and neutral BB¯ and B*B¯ * pairs in e+e− annihilation. It is shown that the difference between the masses of charged and neutral mesons obtained under the assumption that this ratio is constant on a scale of the order of the beam energy spread can differ from the true one by δM ∼ 0.03 MeV at the energy of Υ(5S) and by δM ∼ 0.4 MeV at the energy of Υ(4S). Thus, the errors given in the PDG for the difference between the masses of charged and neutral B mesons, based on the results obtained at the energy of Υ(4S), are strongly underestimated. Similar measurements at the energy of Υ(5S) will have an order of magnitude smaller systematic shift for the mass difference. This circumstance should be taken into account when planning future experiments at the B factory in KEK.

KW - Bottom Quarks

KW - Quarkonium

UR - http://www.scopus.com/inward/record.url?scp=85130718032&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2022)170

DO - 10.1007/JHEP05(2022)170

M3 - Article

AN - SCOPUS:85130718032

VL - 2022

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 5

M1 - 170

ER -

ID: 36564602