Simultaneous Measurements of the $p+d\to (A=3) +π$ Reactions

M. Betigeri; J. Bojowald; A. Budzanowski; A . Chatterjee; J. Ernst; L. Freindl; D. Frekers; W. Garske; K. Grewer; A. Hamacher; J. Ilieva; L. Jarczyk; K. Kilian; S. Kliczewski; W. Klimala; D. Kolev; T. Kutsarova; J. Lieb; H. Machner; A. Magiera; H. Nann; L. Pentchev; H. S. Plendl; D. Protic; B. Razen; P. von Rossen; B. J. Roy; R. Siudak; A. Strzalkowski; R. Tsenov; K. Zwoll

doi:10.1016/s0375-9474(00)00699-0

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Simultaneous Measurements of the $p+d\to (A=3) +π$ Reactions

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Abstract

A stack of annular detectors made of high purity germanium was used to measure simultaneously $pd\to {^3H} π^+$ and $pd\to {^3He} π^0$ differential cross sections at beam momenta of 750 MeV/c, 800 MeV/c, and 850 MeV/c over a large angular range. The extracted total cross sections for the $pd\to {^3He} π^0$ reactions bridge a gap between near threshold data and those in the resonance region. The ratio of the cross sections for the two reaction channels taken at the same $η={p^{cm}_π}/m_π$ yields $2.11\pm0.08$ indicating that a deviation from isospin symmetry is very small.

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M. Betigeri, J. Bojowald, A. Budzanowski, A . Chatterjee, J. Ernst, L. Freindl, D. Frekers, W. Garske, K. Grewer, A. Hamacher, J. Ilieva, L. Jarczyk, K. Kilian, S. Kliczewski, W. Klimala, D. Kolev, T. Kutsarova, J. Lieb, H. Machner, A. Magiera, H. Nann, L. Pentchev, H. S. Plendl, D. Protic, B. Razen, P. von Rossen, B. J. Roy, R. Siudak, A. Strzalkowski, R. Tsenov, K. Zwoll. 2000-11-23. Simultaneous Measurements of the $p+d\to (A=3) +π$ Reactions. https://doi.org/10.1016/s0375-9474(00)00699-0

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