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Measurement of pi^0 pi^0 Production in the Nuclear Medium by pi^- Interactions at 0.408 GeV/c (CROSBI ID 92818)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Starostin, A. ; Staudenmaier, H.M. ; Allgower, C.E. ; Bekrenev, V. ; Berger, E. ; Briscoe, W.J. ; Clajus, M. ; Comfort, J.R. ; Craig, K. ; Grosnick, D. et al. Measurement of pi^0 pi^0 Production in the Nuclear Medium by pi^- Interactions at 0.408 GeV/c // Physical review letters, 85 (2000), 26; 5539-5542

Podaci o odgovornosti

Starostin, A. ; Staudenmaier, H.M. ; Allgower, C.E. ; Bekrenev, V. ; Berger, E. ; Briscoe, W.J. ; Clajus, M. ; Comfort, J.R. ; Craig, K. ; Grosnick, D. ; Isenhower, H. ; Knecht, N. ; Koetke, D. ; Koulbardis, A. ; Kozlenko, N. ; Kruglov, S. ; Kycia, T. ; Lolos, G. ; Lopatin, I. ; Manley, D.M. ; Manweiler, B. ; Marušić, Aljoša ; McDonald, S. ; Nefkens, B.M.K. ; Olmsted, J. ; Papandreou, Z. ; Peaslee, D. ; Peterson, R.J. ; Phaisangittisakul, N. ; Prakhov, S. ; Pulver, M. ; Ramirez, A.F. ; Sadler, M. ; Shafi, A. ; Šlaus, Ivo ; Spinka, H. ; Stanislaus, S. ; Supek, Ivan ; Tippens, W.B.

engleski

Measurement of pi^0 pi^0 Production in the Nuclear Medium by pi^- Interactions at 0.408 GeV/c

We report on an investigation of the (pi^–, pi^0 pi^0) reaction by means of measurements of the pi^0 pi^0 invariant mass distributions from pi^– interactions on H, D, C, Al, and Cu targets at p_pi^– = 0.408 GeV/c. The sharp, strong peak in the pi^+ pi^– invariant mass near 2m_pi reported by the CHAOS Collaboration is not seen in our pi^0 pi^0 data. However, we do observe a change in the shape of the pi^0 pi^0 invariant mass spectrum for the different targets, indicating that the pi^0 pi^0 interaction diminishes in the nuclear medium as represented by nuclei D, C, Al, and Cu, compared to hydrogen.

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Podaci o izdanju

85 (26)

2000.

5539-5542

objavljeno

0031-9007

Povezanost rada

Fizika

Indeksiranost