Formal theory of heavy ion double charge exchange reactions

Lenske, Horst; Bellone, Jessica; Colonna, Maria; Gambacurta, Danilo; Lay, Jose-Antonio

doi:10.1051/epjconf/202429204001

Cited by 1 publication

(3 citation statements)

References 18 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides hadronic DCE reactions, there is only one other process known to change nuclear charges by two units, namely, double beta decay by weak interactions. The similarities between hadronic DCE (HDCE) reactions and leptonic DBD (LDBD), elucidated recently in [20] are worth closer consideration. An overall striking similarity is already that both hadronic and leptonic DCE may proceed in two distinct versions: in HDCE, these are the DSCE and MDCE reaction mechanisms, and in LDBD, these are the 2ν2β and the 0ν2β processes.…”

Section: Leptonic and Hadronic Dce Processesmentioning

confidence: 99%

“…In [1,20], the similarity of DSCE and two-neutrino DBD was emphasized. A special aspect of the pionic MDCE scenario is the striking similarity to the heavily discussed neutrinoless Majorana DBD (MDBD).…”

mentioning

confidence: 99%

“…Diagrams describing the A(Z, N) → B(Z + 2, N − 2) transition for two-neutrino DBD (left) and hadronic DSCE in one of the interacting nuclei participating in a DCE reaction (right).In the DSCE case, the wavy line indicates a virtual ρ − meson, which decays in to a reabsorbed π 0 and a virtual π − meson. See text and Ref [20]. for further discussion.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Theory of Majorana-Type Heavy Ion Double Charge Exchange Reactions by Pion–Nucleon Isotensor Interactions

Lenske,

Bellone,

Colonna

et al. 2024

Universe

Self Cite

View full text Add to dashboard Cite

The theory of heavy ion double charge exchange (DCE) reactions proceeding by effective rank-2 isotensor interactions is presented. Virtual pion–nucleon charge exchange interactions are investigated as the source for induced isotensor interactions, giving rise to the Majorana DCE (MDCE) reaction mechanism. MDCE is of a generic character, proceeding through pairs of complementary (π±,π∓) reactions in the projectile and target nucleus. The dynamics of the elementary processes is discussed, where the excitation of pion–nucleon resonances are of central importance. Investigations of initial and final state ion–ion interactions show that these effects are acting as vertex renormalizations. In closure approximation, well justified by the finite pion mass, the second-order transition matrix elements reduce to pion potentials and effective two-body isotensor DCE interactions, giving rise also to two-body correlations in either of the participating nuclei. Connections to neutrinoless Majorana double beta decay (MDBD) are elucidated at various levels of the dynamics, from the underlying fundamental electro-weak and QCD scales to the physical scales of nuclear MDBD and MDCE physics. It is pointed out that heavy ion MDCE reactions may also proceed by competing electro-weak charge exchange processes, leading to lepton MDCE by electrons, positrons, and neutrinos.

show abstract

Section: Leptonic and Hadronic Dce Processesmentioning

confidence: 99%

mentioning

confidence: 99%