Kaonic Hydrogen atom X-rays

Bird, P.M.; Clough, A.S.; Parker, K.R.; Pyle, G.J.; Squier, G.T.A.; Baird, S.; Batty, C.J.; Kilvington, A.I.; Russell, F.M.; Sharman, P W

doi:10.1016/0375-9474(83)90272-5

Cited by 79 publications

(33 citation statements)

References 6 publications

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“…It should be pointed out that these results are in contradiction with the earlier measurements [3,4,5,6], see also Fig. 3 below.…”

Section: Introductioncontrasting

confidence: 83%

“…3 we plot the theoretical predictions corresponding to the scattering lengths from Refs. [20,30] versus the old and new experimental measurements of the energy spectrum of kaonic hydrogen [2,3,4,5,6]. As we immediately observe from the plot, the use of the lowestorder Deser formula Eq.…”

Section: Results Discussion and Higher Order Correctionsmentioning

confidence: 85%

“…Here we do not provide the details of the calculations, only the final result is given. It is convenient to introduce a well-defined splitting of the energy shift into the "electromagnetic" and "strong" parts, 5 where the former does not contain the 5 This naming scheme should not be understood literally. For example, the "electromagnetic" contribution depends on the electromagnetic radii of the proton and K − , which are determined mainly by strong interactions.…”

Section: Formalismmentioning

confidence: 99%

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Spectrum and decays of kaonic hydrogen

2004

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Abstract. By using the non-relativistic effective Lagrangian approach to bound states, a complete expression for the isospin-breaking corrections to the energy levels and the decay widths of kaonic hydrogen is obtained up-to-and-including O(α, m d − mu) in QCD. It is demonstrated that, although the leading-order corrections at O(α 1/2 , (m d − mu) 1/2 ) emerging due to the unitarity cusp, are huge, they can be expressed solely in terms of the KN S-wave scattering lengths. Consequently, at leading order, it is possible to derive parameter-free modified Deser-type relations, which can be used to extract the scattering lengths from the hadronic atom data.

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“…It should be pointed out that these results are in contradiction with the earlier measurements [3,4,5,6], see also Fig. 3 below.…”

Section: Introductioncontrasting

confidence: 83%

Section: Results Discussion and Higher Order Correctionsmentioning

confidence: 85%

Section: Formalismmentioning

confidence: 99%

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Spectrum and decays of kaonic hydrogen

2004

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“…For the kaonic hydrogen, the past experimental values of the 1s-state energy-level shift (attraction) [3][4][5] had disagreed with that of theoretical calculation (repulsion) even for its sign. A repulsive-type shift was observed in the KpX experiment in 1997 [6] and was firmly established by the DEAR experiment in 2005 [7].…”

Section: : the Most Important Experiments To Be Carried Out In Low-enmentioning

confidence: 91%

“…The SIDDHARTA experiment has been performed at the DAΦNE positron-electron collider that produces the φ-resonance which decays into K + K − with a probability of 49 EPJ Web of Conferences [6], DEAR [7], and old three experiments J.D.Davies et al [3], M.Izycki et al [4], P.M.Bird et al [5]. The symbols show the theoretical values of two recent calculations (closed symbols [8], open symbols [9]) that try to combine the results of x-ray measurements with scattering data under various conditions, with (square) and without (circle) isospin braking corrections to the Deser formula.…”

Section: Methodsmentioning

confidence: 99%