Search for the Charge-Symmetry-Breaking Reaction <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>d</mi><mo>+</mo><mi>d</mi><mo>→</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>4</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>+</mo><mrow><msup><mrow><mi>π</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span> at 0.8 GeV

J. Banaigs; J. Berger; M. Boivin; A. Boudard; J. B. Carroll; F. L. Fabbri; P. Fleury; L. Goldzahl; G. Igo; C. Kerboul; F. Poluin; L. Satta; B. H. Silverman; A. W. Stetz; J. Yonnet

doi:10.1103/PhysRevLett.58.1922

Search for the Charge-Symmetry-Breaking Reaction $d + d \to {}^{4}{He} + π^{0}$ at 0.8 GeV

J. Banaigs, J. Berger, M. Boivin, A. Boudard, J. B. Carroll, F. L. Fabbri, P. Fleury, L. Goldzahl, G. Igo, C. Kerboul, F. Poluin, L. Satta, B. H. Silverman, A. W. Stetz, and J. Yonnet

Phys. Rev. Lett. 58, 1922 – Published 11 May 1987

Abstract

For the charge-symmetry-breaking reaction $d + d \to {}^{4}{He} + π^{0}$ at $T_{d} = 0.8$ GeV around 100° c.m., an upper limit on the production cross section of ≈0.8 pb/sr is obtained. This represents about a factor of 20 improvement on previous measurements, but is still a factor of 5 above expected violations.

Received 7 July 1986

DOI:https://doi.org/10.1103/PhysRevLett.58.1922

Authors & Affiliations

J. Banaigs¹, J. Berger¹, M. Boivin², A. Boudard², J. B. Carroll³, F. L. Fabbri⁴, P. Fleury⁵, L. Goldzahl¹, G. Igo³, C. Kerboul², F. Poluin¹, L. Satta⁴, B. H. Silverman⁶, A. W. Stetz^2,*, and J. Yonnet²

¹Equipe de Recherche No. 54, Institut National de Physique Nucléaire et de Physique des Particules, Laboratoire National Saturne, Centre d'Etudes Nucleaires de Saclay, 91190 Gif-sur-Yvette, France
²Laboratoire National Saturne, Centre d'Etudes Nucleaires de Saclay, 91190 Gif-sur-Yvette, France
³Department of Physics, University of California, Los Angeles, Los Angeles, California 90024
⁴Istituto Nationale di Fisica Nucleare, Frascati, Italy
⁵Ecole Polytechnique, 91128 Palaiseau, France
⁶Departement de Physique Nucléaire-Moyenne Energie, Centre d'Etudes Nucléaires de Saclay, 91190 Gif-sur-Yvette, France