Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se

K Wimmer; W Korten; P Doornenbal; T Arici; P Aguilera; A Algora; T Ando; H Baba; B Blank; A Boso; S Chen; A Corsi; P Davies; G de Angelis; G de France; J-P Delaroche; D T Doherty; J Gerl; R Gernhäuser; M Girod; D Jenkins; S Koyama; T Motobayashi; S Nagamine; M Niikura; A Obertelli; J Libert; D Lubos; T R Rodríguez; B Rubio; E Sahin; T Y Saito; H Sakurai; L Sinclair; D Steppenbeck; R Taniuchi; R Wadsworth; M Zielinska

doi:10.1103/PhysRevLett.126.072501

Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se

K Wimmer, W Korten, P Doornenbal, T Arici, P Aguilera, A Algora, T Ando, H Baba, B Blank, A Boso, S Chen, A Corsi, P Davies, G de Angelis, G de France, J-P Delaroche, D T Doherty, J Gerl, R Gernhäuser, M GirodD Jenkins, S Koyama, T Motobayashi, S Nagamine, M Niikura, A Obertelli, J Libert, D Lubos, T R Rodríguez, B Rubio, E Sahin, T Y Saito, H Sakurai, L Sinclair, D Steppenbeck, R Taniuchi, R Wadsworth, M Zielinska

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei ^{70}Kr and ^{70}Se contrary to the model predictions.

Original language	English
Pages (from-to)	072501
Journal	Physical Review Letters
Volume	126
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.126.072501
Publication status	Published - 19 Feb 2021

Bibliographical note

accepted PRL

Keywords

nucl-ex
nucl-th

Access to Document

10.1103/PhysRevLett.126.072501

2101.02363v1Accepted author manuscript, 636 KB

Nuclear Physics Consolidated Grant
Jenkins, D., Andreyev, A., Bentley, M., Diget, C. A., Dobaczewski, J. J., Fulton, B. R., Laird, A. M., Paschalis, S., Pastore, A., Petri, M. & Wadsworth, R.
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/17 → 30/09/22
Project: Research project (funded) › Research
Nuclear Physics Consolidated Grant
Wadsworth, R., Wadsworth, R., Andreyev, A., Andreyev, A., Diget, C. A., Diget, C. A., Fulton, B. R., Fulton, B. R., Jenkins, D., Jenkins, D., Laird, A. M. & Laird, A. M.
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/08/14 → 30/09/18
Project: Research project (funded) › Research

Cite this

Wimmer, K., Korten, W., Doornenbal, P., Arici, T., Aguilera, P., Algora, A., Ando, T., Baba, H., Blank, B., Boso, A., Chen, S., Corsi, A., Davies, P., de Angelis, G., de France, G., Delaroche, J-P., Doherty, D. T., Gerl, J., Gernhäuser, R., ... Zielinska, M. (2021). Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se. Physical Review Letters, 126(7), 072501. https://doi.org/10.1103/PhysRevLett.126.072501

@article{5271905eb6b74aa9aa26f7c00935add4,

title = "Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se",

abstract = "We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei ^{70}Kr and ^{70}Se contrary to the model predictions.",

keywords = "nucl-ex, nucl-th",

author = "K Wimmer and W Korten and P Doornenbal and T Arici and P Aguilera and A Algora and T Ando and H Baba and B Blank and A Boso and S Chen and A Corsi and P Davies and {de Angelis}, G and {de France}, G and J-P Delaroche and Doherty, {D T} and J Gerl and R Gernh{\"a}user and M Girod and D Jenkins and S Koyama and T Motobayashi and S Nagamine and M Niikura and A Obertelli and J Libert and D Lubos and Rodr{\'i}guez, {T R} and B Rubio and E Sahin and Saito, {T Y} and H Sakurai and L Sinclair and D Steppenbeck and R Taniuchi and R Wadsworth and M Zielinska",

note = "accepted PRL",

year = "2021",

month = feb,

day = "19",

doi = "10.1103/PhysRevLett.126.072501",

language = "English",

volume = "126",

pages = "072501",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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Wimmer, K, Korten, W, Doornenbal, P, Arici, T, Aguilera, P, Algora, A, Ando, T, Baba, H, Blank, B, Boso, A, Chen, S, Corsi, A, Davies, P, de Angelis, G, de France, G, Delaroche, J-P, Doherty, DT, Gerl, J, Gernhäuser, R, Girod, M, Jenkins, D, Koyama, S, Motobayashi, T, Nagamine, S, Niikura, M, Obertelli, A, Libert, J, Lubos, D, Rodríguez, TR, Rubio, B, Sahin, E, Saito, TY, Sakurai, H, Sinclair, L, Steppenbeck, D, Taniuchi, R , Wadsworth, R & Zielinska, M 2021, 'Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se', Physical Review Letters, vol. 126, no. 7, pp. 072501. https://doi.org/10.1103/PhysRevLett.126.072501

TY - JOUR

T1 - Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se

AU - Wimmer, K

AU - Korten, W

AU - Doornenbal, P

AU - Arici, T

AU - Aguilera, P

AU - Algora, A

AU - Ando, T

AU - Baba, H

AU - Blank, B

AU - Boso, A

AU - Chen, S

AU - Corsi, A

AU - Davies, P

AU - de Angelis, G

AU - de France, G

AU - Delaroche, J-P

AU - Doherty, D T

AU - Gerl, J

AU - Gernhäuser, R

AU - Girod, M

AU - Jenkins, D

AU - Koyama, S

AU - Motobayashi, T

AU - Nagamine, S

AU - Niikura, M

AU - Obertelli, A

AU - Libert, J

AU - Lubos, D

AU - Rodríguez, T R

AU - Rubio, B

AU - Sahin, E

AU - Saito, T Y

AU - Sakurai, H

AU - Sinclair, L

AU - Steppenbeck, D

AU - Taniuchi, R

AU - Wadsworth, R

AU - Zielinska, M

N1 - accepted PRL

PY - 2021/2/19

Y1 - 2021/2/19

N2 - We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei ^{70}Kr and ^{70}Se contrary to the model predictions.

AB - We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei ^{70}Kr and ^{70}Se contrary to the model predictions.

KW - nucl-ex

KW - nucl-th

U2 - 10.1103/PhysRevLett.126.072501

DO - 10.1103/PhysRevLett.126.072501

M3 - Article

C2 - 33666458

SN - 0031-9007

VL - 126

SP - 072501

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

ER -

Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se

Abstract

Bibliographical note

Keywords

Access to Document

Projects

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this