RT – Revolutionary Technology

Wallner, Simon; Schrewe, Klaus

doi:10.1007/978-3-658-33521-2_33

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“…1 The COMPASS experiment has measured kaon diffraction on a proton target using the 2.4 % K − component in the 190 GeV/c hadron beam. In particular, COMPASS has acquired the so far largest data sample of 720 000 events of the reaction K − p → K − π − π + p. 18 The invariant mass distribution of the K − π − π + system shown in Fig. 4a exhibits possible P r e l i m i n a r y (a) A first PWA of these data was performed using a wave set determined by employing regularization techniques.…”

Section: Kaon Spectroscopymentioning

confidence: 99%

Light-Meson Spectroscopy at Lepto- and Hadroproduction Experiments

Grube

2020

Hadron Spectroscopy and Structure

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The excitation spectrum of light mesons, which are composed of up, down, and strange quarks, is studied since decades. However, it still holds a number of puzzles and surprises that provide new insights into the nature of the strong interaction. Recent high-quality data samples from several experiments allow us to not only study the properties of established mesons with unprecedented precision but to also search for new states. These searches aim in particular at resolving the question of the existence of so-called exotic states, such as four-quark states or states with excited gluon fields. Since light mesons have often large widths and are overlapping, the mapping of their spectrum is challenging and requires large quantities of data on different production and decay modes. The data are analyzed using a framework of interfering quantum mechanical amplitudes known as partial-wave analysis (PWA). Most excited meson states decay into multi-particle final states, for which the PWA requires extensive modeling of the dynamics of the final-state hadrons. I will give an overview on ongoing experimental studies of light mesons and discuss possible interpretations. I will also touch on novel analysis techniques and the prospects for future progress.

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Section: Kaon Spectroscopymentioning

confidence: 99%

Light-Meson Spectroscopy at Lepto- and Hadroproduction Experiments

Grube

2020

Hadron Spectroscopy and Structure

View full text Add to dashboard Cite

show abstract

RT – Revolutionary Technology

Cited by 1 publication

References 1 publication

Light-Meson Spectroscopy at Lepto- and Hadroproduction Experiments

Light-Meson Spectroscopy at Lepto- and Hadroproduction Experiments

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