Pontecorvo reactions in antiproton annihilation at rest in deuterium to {pi}{sup 0}n, {pi}{sup 0}{Delta}{sup 0}, {eta}n, and {eta}{Delta}{sup 0}

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Physical Review, D

OSTI ID:467799

Iwahori, J; Kawaguti, M; Yoshida, H ^[1]; Kobayashi, M; Kurokawa, S; Takasaki, M ^[2]; Takeutchi, F ^[3]; Fujitani, T; Nagashima, Y; Omori, T; Sugimoto, S; Yamaguchi, Y ^[4]; Chiba, M ^[5]

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1. Faculty of Engineering, Fukui University, Fukui, Fukui, 910 (Japan)
2. KEK, National Laboratory for High Energy Physics, Tsukuba, 305 (Japan)
3. Faculty of Science, Kyoto Sangyo University, Kita, Kyoto, 603 (Japan)
4. Department of Physics, Osaka University, Toyonaka, Osaka, 560 (Japan)
5. Department of Physics, Tokyo Metropolitan University, Hachioji, 192-03 (Japan)

Using modularized NaI(Tl) detectors, we carried out a high statistics measurement of inclusive {gamma}-ray, {pi}{sup 0}, and {eta} spectra, and determined the branching ratios or upper limits of Pontecorvo reactions {bar p}d{r_arrow}{pi}{sup 0}n, {pi}{sup 0}{Delta}{sup 0}, {eta}n, and {eta}{Delta}{sup 0} from the corresponding monochromatic peaks in them. The obtained branching ratios are B({bar p}d{r_arrow}{pi}{sup 0}n)=(1.03{plus_minus}0.41){times}10{sup {minus}5}, B({bar p}d{r_arrow}{pi}{sup 0}{Delta}{sup 0})=(4.67{plus_minus}1.66){times}10{sup {minus}5}, B({bar p}d{r_arrow}{eta}n){lt}8.94{times}10{sup {minus}6} (95{percent} C.L.), and B({bar p}d{r_arrow}{eta}{Delta}{sup 0}){lt}6.49{times}10{sup {minus}5} (95{percent} C.L.). {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 467799
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANNIHILATION
ANTIPROTON-NEUTRON INTERACTIONS
BRANCHING RATIO
DELTA BARYONS
ETA MESONS
GAMMA RADIATION
GAMMA SPECTRA
NEUTRONS
PARTICLE PRODUCTION
PIONS NEUTRAL
POLARIZED BEAMS
PROTON-ANTIPROTON INTERACTIONS
PROTON-PROTON INTERACTIONS