Measurement of in the T and U-meson region

Dulude, R.S.; Lanou, R.E.; Massimo, J.T.; Peaslee, D. C.; Thornton, Rosalind; Barton, D. S.; Marx, M.; Nelson, B.; Rosenson, L.; DeMarzo, C.; Guerriero, L.; Posa, F.; Vaccari, Eugenio; Waldner, F.

doi:10.1016/0370-2693(78)90256-3

Cited by 37 publications

(4 citation statements)

References 9 publications

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“…Therefore, the background coming from pp annihilation into two pions is expected to be the largest and has been evaluated using detailed simulations. The angular distributions for charged and neutral pion pair production were extrapolated from a parameterization of the data [37,38,39,40,41,42]. For s < 6 (GeV/c) 2 , the existing data [37,40,41] were fitted by Legendre polynomials.…”

Section: Study Of Background Channelsmentioning

confidence: 99%

“…The angular distributions for charged and neutral pion pair production were extrapolated from a parameterization of the data [37,38,39,40,41,42]. For s < 6 (GeV/c) 2 , the existing data [37,40,41] were fitted by Legendre polynomials. In the high energy range, instead, the behavior of exclusive processes is driven by dimensional counting rules, thus the differential cross section of the p + p → π − + π + process can be parametrized as [25,26]:…”

Section: Study Of Background Channelsmentioning

confidence: 99%

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Feasibility studies of the time-like proton electromagnetic form factor measurements with PANDA at FAIR

Sudol,

Espi,

Becheva

et al. 2009

Preprint

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The possibility of measuring the proton electromagnetic form factors in the time-like region at FAIR with the PANDA detector is discussed. Detailed simulations on signal efficiency for the annihilation of p + p into a lepton pair as well as for the most important background channels have been performed. It is shown that precise measurements of the differential cross section of the reaction p + p → e − + e + can be obtained in a wide kinematical range. The determination of the ratio R of the moduli of the electric and magnetic proton form factors will be possible up to a value of momentum transfer squared of q 2 ≃ 14 (GeV/c) 2 with absolute precision from 0.01 to 0.5 (for R ∼ 1). The total p + p → e − + e + cross section will be measured up to q 2 ≃ 28 (GeV/c) 2 . The results obtained from simulated events are compared to the existing data. Sensitivity to the two photons exchange mechanism is also investigated.

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Section: Study Of Background Channelsmentioning

confidence: 99%

Section: Study Of Background Channelsmentioning

confidence: 99%

Feasibility studies of the time-like proton electromagnetic form factor measurements with PANDA at FAIR

Sudol,

Espi,

Becheva

et al. 2009

Preprint

View full text Add to dashboard Cite

show abstract

“…Recently, models based upon application of quarkparton ideas to low p_ hadron interactions have appeared. Of particular interest has been a model of Brodsky and Gunion which introduces the concept of two processes mediating the low p inclusive scattering of hadrons: (1) quark exchange or annihilation or (2) gluon exchange. The inclusive, in variant cross section should factorize E±~3 = f(p a' V • dX) 2^"1 dp and n refers to the number of spectator quarks to the production of parti cle (c) .…”

Section: Imentioning

confidence: 99%

“…The estimated rates and backgrounds for v e -*■ v e and v e -*■ v e are competitive with, if not better than, any other proposed ex periment. In addition, it has two fundamental advantages: (1) it is the only proposed experiment with significant y/e discrimination a feature which has been deemed of crucial importance by all existing bubble chamber studies; (2) It would provide a measurement of v p »■ v e with an entirely different set of systematic errors than experiments performed at high energies assuming that the latter are indeed successful.…”

Section: %mentioning

confidence: 99%