- th / 0 10 80 26 v 3 5 F eb 2 00 2 Singlet and Triplet Differential Cross Sections for pp → ppπ ◦
نویسندگان
چکیده
The singlet and triplet differential cross sections for pp → ppπ • have been estimated for the first time at 325, 350, 375 and 400 MeV using the results of the recent experimental measurements [Phys. Rev. C 63, 064002 (2001)] of Meyer et al.
منابع مشابه
ar X iv : h ep - p h / 00 10 27 8 v 1 2 4 O ct 2 00 0 Phenomenology for ~ p ~ p → ppπ ◦
We show that it is possible to empirically partition the differential cross section for pp → ppπ • into initial singlet and triplet differential cross sections in a model independent way which can be implemented using the existing technological capabilities at the PINTEX facility to study the reaction employing polarized beam or polarized target or both simultaneously.
متن کاملar X iv : n uc l - th / 0 10 80 26 v 1 1 0 A ug 2 00 1 Singlet and Triplet Differential Cross Sections for pp → ppπ ◦
The singlet and triplet differential cross sections for pp → ppπ • have been estimated for the first time at 325, 350, 375 and 400 MeV using the results of the recent experimental measurements [Phys. The study of the reaction p p → ppπ • has excited considerable experimental interest [1-4], since the transition is mainly to the final Ss state and is completely spin-dependent at threshold energi...
متن کاملar X iv : n uc l - ex / 0 10 80 08 v 2 2 2 Ju l 2 00 7 The reaction np → pp π − from threshold up to 570 MeV
The reaction np → ppπ − has been studied in a kinematically complete measurement with a large acceptance time-of-flight spectrometer for incident neutron energies between threshold and 570 MeV. The proton-proton invariant mass distributions show a strong enhancement due to the pp(1 S0) final state interaction. A large anisotropy was found in the pion angular distributions in contrast to the rea...
متن کاملar X iv : n uc l - ex / 0 10 80 08 v 1 7 A ug 2 00 1 The reaction np → pp π − from threshold up to 570 MeV
The reaction np → ppπ − has been studied in a kinematically complete measurement with a large acceptance time-of-flight spectrometer for incident neutron energies between threshold and 570 MeV. The proton-proton invariant mass distributions show a strong enhancement due to the pp(1 S0) final state interaction. A large anisotropy was found in the pion angular distributions in contrast to the rea...
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We present a systematic analysis of next-to-next-to-leading-order diagrams that contribute to the pp → ppπ 0 production at threshold. Analytic expressions are given for the effective transition operators, and the relative importance of various types of diagrams is discussed. The vertex-correction-type graphs are found to give only small corrections to lower order graphs in conformity with expec...
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