Kaonic helium-4 X-ray measurement in SIDDHARTA

Bazzi, M.; Beer, G.; Bombelli, L.; Bragadireanu, A. M.; Cargnelli, M.; Corradi, G.; Curceanu, C.; D’Uffizi, A.; Fiorini, C.; Frizzi, T.; Ghio, F.; Girolami, B.; Guaraldo, C.; Hayano, R.; Iliescu, M.; Ishiwatari, T.; Iwasaki, M.; Kienle, Paul; Sandri, P. Levi; Longoni, A.; Lucherini, V.; Márton, J.; Okada, S.; Pietreanu, D.; Ponta, T.; Rizzo, A.; Vidal, A. Romero; Scordo, A.; Shi, H.; Sirghi, D.; Sirghi, F.; Tatsuno, H.; Tudorache, A.; Tudorache, V.; Doce, O. Vázquez; Widmann, E.; Zmeskal, J.

doi:10.1016/j.physletb.2009.10.052

Cited by 112 publications

(96 citation statements)

References 17 publications

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“…Three measurements of the energy shift of the kaonic 4 He 2p-state made in the 70's and 80's gave consistent results with an average value of the shift E =−43 ± 8 eV.…”

Section: Kaonic Helium Resultssupporting

confidence: 53%

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Probing Strong Interaction with Kaonic Atoms — from DAΦNE to J-PARC

Zmeskal¹,

Sato²,

Beer³

et al. 2017

Proceedings of the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015)

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The study of the antikaon nucleon system at very low energies plays a key role to study strong interaction with strangeness, touching one of the fundamental problems in hadron physic today  the still unsolved question of how hadron masses are generated. Exotic atoms offer a unique possibility to determine s-wave kaon-nucleon scattering lengths at vanishing energy. At the DANE electron positron collider of Laboratori Nazionali di Frascati in the SIDDHARTA experiment kaonic atoms were formed with Z=1 (K  p) and Z=2 (K  He), which were measured with up to now unrivalled precision. This experiment is taking advantage of the low-energy charged kaons from -mesons decaying nearly at rest. Finally, using the experience gained with SIDDHARTA, a proposal to measure kaonic deuterium for the first time was submitted to J-PARC with the goal to determine the isospin dependent scattering lengths, which is only possible by combining the K  p and the upcoming K  d results.

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“…Three measurements of the energy shift of the kaonic 4 He 2p-state made in the 70's and 80's gave consistent results with an average value of the shift E =−43 ± 8 eV.…”

Section: Kaonic Helium Resultssupporting

confidence: 53%

“…Measurements of the 2p shift and width of kaonic helium ( 4 He as well as 3 He) [4,5] completed the SIDDHARTA programme.…”

Section: Introductionmentioning

confidence: 99%

Probing Strong Interaction with Kaonic Atoms — from DAΦNE to J-PARC

Zmeskal¹,

Sato²,

Beer³

et al. 2017

Proceedings of the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015)

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“…The existence of theK bound states in nuclear systems, which are called kaonic nuclei, is theoretically expected because of the strong attractive interactions between theK and the nucleon. Models range from empirical ones with a depth of around 200 MeV at normal nuclear matter density [29], to those imposing chiral symmetry constraints that lead to an attraction of around [40][41][42][43][44][45][46][47][48][49][50] MeV [30][31][32][33][34]. However there is no experimental evidence on this system.…”

Section: Introductionmentioning

confidence: 99%

K¯NNabsorption within the framework of the fixed-center approximation to Faddeev equations

Bayar

Oset

2013

Phys. Rev. C

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We present a method to evaluate theK absorption width in the boundKN N system. Most calculations of this system ignore this channel and only consider theKN → πΣ conversion. Other works make a qualitative calculation using perturbative methods. Since the Λ(1405) resonance is playing a role in the process, the same resonance is changed by the presence of the absorption channels and we find that a full nonperturbative calculation is called for, which we present here. We employ the Fixed Center Approximation to Faddeev equations to account forK rescattering on the (N N ) cluster and we find that the width of the states found previously for S = 0 and S = 1 increases by about 30 MeV due to theKN N absorption, to a total width of about 80 MeV.

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“…The experimental setup, the performance and the calibration method of the detectors have been systematically introduced in the previous publications of the SIDDHARTA collaboration [2,5]. Here we give a concise review of the main features of the experiment which are needed for later discussion.…”

Section: The Siddharta Experimentsmentioning

confidence: 99%

“…As a reliability check for the simulation, we compared the simulation-estimated stopped kaon ratio dependence on the thickness of the Mylar degraders, to the measured dependence obtained from our helium target measurement [5], whose objective includes the tuning of the degrader. We found in the hydrogen target measurement, the optimized thickness in the simulation is 50 µm thicker than the actually used thickness which was determined based on the optimization done in the helium target measurement, and which was scaled accordingly considering the difference in the configurations of the setups.…”

Section: -P2mentioning

confidence: 99%

The yield of kaonic hydrogen X-rays in the SIDDHARTA experiment

Shi

Beer

Berucci

et al. 2014

EPJ Web of Conferences

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Abstract. We measured K-series kaonic hydrogen X-rays in the SIDDHARTA experiment performed at the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati. With a gaseous hydrogen target of density 15 ρ STP , preliminary values of the absolute yields, defined as the number of atomic X-rays emitted per kaon stopped inside the target, were determined to be 0.012 +0.003 −0.004 for K α transition and 0.045 +0.009 −0.012 for K tot , the summation of all the emitted K-series transitions.

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Kaonic helium-4 X-ray measurement in SIDDHARTA

Cited by 112 publications

References 17 publications

Probing Strong Interaction with Kaonic Atoms — from DAΦNE to J-PARC

Probing Strong Interaction with Kaonic Atoms — from DAΦNE to J-PARC

K¯NNabsorption within the framework of the fixed-center approximation to Faddeev equations

The yield of kaonic hydrogen X-rays in the SIDDHARTA experiment

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