New precision measurement of the J/ψ- and ψʹ-meson masses

Aulchenko, V.; Balashov, S. A.; Baldin, E. M.; Barnyakov, M.Yu.; Baru, S.E.; Bedny, I.; Beloborodova, O.; Blinov, A. E.; Blinov, V. E.; Bogomyagkov, A.; Bondar, A.; Bondarev, D.V.; Бузыкаев, А. Р.; Eidelman, S.; Groshev, V.R.; Kamaev, S. E.; Киселев, В. А.; Kononov, S.A.; Kotov, K. A.; Kravchenko, E. A.; Kremyanskaya, E. V.; Levichev, E.; Малышев, В. М.; Maslennikov, Alexei; Meshkov, O.; Mishnev, S. E.; Muchnoi, N. Yu.; Naumenkov, A. I.; Никитин, С. А.; Nikolaev, I. B.; Onuchin, A. P.; Oreshkin, S.B.; Pakhotin, Y.; Peleganchuk, S. V.; Petrosyan, S. S.; Petrov, Vladimir; Poluektov, A.; Polunin, A.A.; Поспелов, Г. Е.; Protopopov, I.Ya.; Savinov, G.A.; Shamov, A.G.; Shatilov, D.; Shusharo, A.I; Shwartz, B.; Sidorov, V.; Симонов, Е. А.; Skovpen, Yu. I.; Skrinsky, A.N.; Talyshev, A.; Tayursky, V.A.; Telnov, V. I.; Tikhonov, Yu. A.; Todyshev, K. Yu.; Tumaikin, G.M.; Usov, Y.; Воробйов, А.І.; Yushkov, A. N.; Zatsepin, A. V.; Zhilich, V.

doi:10.1063/1.1799767

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“…The method of resonant beam depolarization at storage rings has enabled the measurement of M Z at LEP with a relative accuracy of 2.3 • 10 −5 , and M J/Ψ [1] was measured at Budker INP with a relative precision of 4 • 10 −6 (σ M = 12 keV/c 2 !) [2].…”

Section: Introductionmentioning

confidence: 99%

Energy calibration at high-energy photon colliders

Telnov

2014

J. Inst.

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Calibration of the absolute energy scale at high-energy photon (γγ, γe) colliders is discussed. The luminosity spectrum at photon colliders is broad and has a rather sharp high-energy edge, which can be used, for example, to measure the mass of the Higgs boson in the process γγ → H or masses of charged scalars by observing the cross-section threshold. In addition to the precise knowledge of the edge energy of the luminosity spectrum, it is even more important to have a way to calibrate the absolute energy scale of the detector. At first sight, Compton scattering itself provides a unique way to determine the beam energies and produce particles of known energies that could be used for detector calibration. The energy scale is given by the electron mass m e and laser photon energy ω 0 . However, this does not work at realistic photon colliders due to large nonlinear effects in Compton scattering at the conversion region (ξ 2 ∼ 0.3). It is argued that the process γe → eZ 0 provides the best way to calibrate the energy scale of the detector, where the energy scale is given by m Z .

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Section: Introductionmentioning

confidence: 99%

Energy calibration at high-energy photon colliders

Telnov

2014

J. Inst.

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New precision measurement of the J/ψ- and ψʹ-meson masses

Cited by 1 publication

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Energy calibration at high-energy photon colliders

Energy calibration at high-energy photon colliders

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