PUMA, antiProton unstable matter annihilation

T. Aumann , W. Bartmann , O. Boine-Frankenheim , A. Bouvard , A. Broche , F. Butin , D. Calvet (1) , J. Carbonell , P. Chiggiato , H. de Gersem , R. de Oliveira , T. Dobers , F. Ehm , J.Ferreira Somoza , J. Fischer , M. Fraser , E. Friedrich , A. Frotscher , M. Gomez-Ramos , J.L. Grenard , A. Hobl , G. Hupin , A. Husson , P. Indelicato (2) , K. Johnston , C. Klink , Y. Kubota , R. Lazauskas (3) , S. Malbrunot-Ettenauer , N. Marsic , W.F. O Müller , S. Naimi , N. Nakatsuka , R. Necca , D. Neidherr , G. Neyens (3) , A. Obertelli , Y. Ono , S. Pasinelli , N. Paul (2) , E.C. Pollacco (1) , D. Rossi , H. Scheit , M. Schlaich , A. Schmidt , L. Schweikhard (4) , R. Seki , S. Sels , E. Siesling , T. Uesaka , M. Vilén , M. Wada , F. Wienholtz , S. Wycech , S. Zacarias

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 LKB [Collège de France] - Laboratoire Kastler Brossel
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

PUMA, antiProton Unstable Matter Annihilation, is a nuclear-physics experiment at CERN aiming at probing the surface properties of stable and rare isotopes by use of low-energy antiprotons. Low-energy antiprotons offer a very unique sensitivity to the neutron and proton densities at the annihilation site, i.e. in the tail of the nuclear density. Today, no facility provides a collider of low-energy radioactive ions and low-energy antiprotons: while not being a collider experiment, PUMA aims at transporting one billion antiprotons from ELENA, the Extra-Low-ENergy Antiproton ring, to ISOLDE, the rare-isotope beam facility of CERN. PUMA will enable the capture of low-energy antiprotons by short-lived nuclei and the measurement of the emitted radiations. In this way, PUMA will give access to the so-far largely unexplored isospin composition of the nuclear-radial-density tail of radioactive nuclei. The motivations, concept and current status of the PUMA experiment are presented.

Mots clés: nucleus: density; nucleus: surface; p: density; annihilation; CERN Lab; nuclear physics; sensitivity; experimental methods; nucleus: density; activity report; nucleus: density; nucleus: density

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Physique Nucléaire Expérimentale [nucl-ex]

T. Aumann, W. Bartmann, O. Boine-Frankenheim, A. Bouvard, A. Broche, et al.. PUMA, antiProton unstable matter annihilation. Eur.Phys.J.A, 2022, 58 (5), pp.88. ⟨10.1140/epja/s10050-022-00713-x⟩. ⟨hal-03662681⟩