title: Signatures of the Giant Pairing Vibration in the 14C and 15C atomic nuclei.
abstract: Giant resonances are collective excitation modes for many-body systems of fermions governed by a mean field, such as the atomic nuclei. The microscopic origin of such modes is the coherence among elementary particle-hole excitations, where a particle is promoted from an occupied state below the Fermi level (hole) to an empty one above the Fermi level (particle). The same coherence is also predicted for the particle-particle and the hole-hole excitations, because of the basic quantum symmetry between particles and holes. In nuclear physics, the giant modes have been widely reported for the particle-hole sector but, despite several attempts, there is no precedent in the particle-particle and hole-hole ones, thus making questionable the aforementioned symmetry assumption. Here we provide experimental indications of the Giant Pairing Vibration, which is the leading particle-particle giant mode. An immediate implication of it is the validation of the particle-hole symmetry.
authors: Dipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, I-95125 Catania, Italy.|Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, I-95125 Catania, Italy.
authors: F
authors: F
authors: Cappuzzello
authors: Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, I-95125 Catania, Italy.
authors: D
authors: D
authors: Carbone
authors: Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, I-95125 Catania, Italy.
authors: M
authors: M
authors: Cavallaro
authors: Dipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, I-95125 Catania, Italy.|Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, I-95125 Catania, Italy.
authors: M
authors: M
authors: Bondì
authors: Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, I-95125 Catania, Italy.
authors: C
authors: C
authors: Agodi
authors: Institut de Physique Nucléaire, Université Paris-Sud-11-CNRS/IN2P3, 91406 Orsay, France.
authors: F
authors: F
authors: Azaiez
authors: Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa, Italy.
authors: A
authors: A
authors: Bonaccorso
authors: Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, I-95125 Catania, Italy.
authors: A
authors: A
authors: Cunsolo
authors: Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova, Italy.|Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy.
authors: L
authors: L
authors: Fortunato
authors: Dipartimento di Fisica e Astronomia, Università di Catania, via S. Sofia 64, I-95125 Catania, Italy.|Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Via S. Sofia 64, I-95125 Catania, Italy.
authors: A
authors: A
authors: Foti
authors: Institut de Physique Nucléaire, Université Paris-Sud-11-CNRS/IN2P3, 91406 Orsay, France.
authors: S
authors: S
authors: Franchoo
authors: Institut de Physique Nucléaire, Université Paris-Sud-11-CNRS/IN2P3, 91406 Orsay, France.
authors: E
authors: E
authors: Khan
authors: Instituto de Física da Universidade Federal Fluminense, 24210-346 Rio de Janeiro, Niterói, RJ, Brazil.
authors: R
authors: R
authors: Linares
authors: Instituto de Física da Universidade Federal Fluminense, 24210-346 Rio de Janeiro, Niterói, RJ, Brazil.
authors: J
authors: J
authors: Lubian
authors: Centre de Sciences Nucléaires et de Sciences de la Matières - CSNSM, Université Paris-Sud-11-CNRS/IN2P3, 91405 Orsay, France.
authors: J A
authors: JA
authors: Scarpaci
authors: Dipartimento di Fisica e Astronomia, Università di Padova, I-35131 Padova, Italy.|Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy.
authors: A
authors: A
authors: Vitturi