Since ten years ago a host of exotic resonances have challenged the usual quarkonium picture. A number of ideas have been put forward to explain these new states, but a comprehensive framework is still missing. We review the estimates for prompt production cross sections at hadron collider, and show that the interpretation of exotic states in terms of hadron molecules is not favored. We show a recently proposed model to solve this paradox and to explain the nature of above-threshold states in terms of Feshbach resonances.

Exotic hadrons as Feshbach resonances / Pilloni, Alessandro. - ELETTRONICO. - 7:(2014), pp. 463-468. ((Intervento presentato al convegno 6th International Winter Workshop "Excited QCD" 2014 tenutosi a Sarajevo nel Febbraio 2014 [10.5506/APhysPolBSupp.7.463].

Exotic hadrons as Feshbach resonances

PILLONI, ALESSANDRO
2014

Abstract

Since ten years ago a host of exotic resonances have challenged the usual quarkonium picture. A number of ideas have been put forward to explain these new states, but a comprehensive framework is still missing. We review the estimates for prompt production cross sections at hadron collider, and show that the interpretation of exotic states in terms of hadron molecules is not favored. We show a recently proposed model to solve this paradox and to explain the nature of above-threshold states in terms of Feshbach resonances.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/760376
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