1.Установка SPIN-P02 (ИТЭФ). 2.Изучение реакции перезарядки (ПИЯФ). 3.Crystal Barrel (ISKP, Bonn). 4.Crystal Ball (Univ. Mainz). 5.Новый ПВА для пион-нуклонного.

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1.Установка SPIN-P02 (ИТЭФ). 2.Изучение реакции перезарядки (ПИЯФ). 3.Crystal Barrel (ISKP, Bonn). 4.Crystal Ball (Univ. Mainz). 5.Новый ПВА для пион-нуклонного взаимодействия. 6. Проект эксперимента для J-PARC. Содержание. (Лаборатория мезонной физики)

A(-) Параметр вращения спина А(-). Мировые данные до 2003 года.

A(+) Параметр вращения спина А(+). Мировые данные до 2003 года.

P(-)-1 Схема эксперимента.

P(-)-2 Установка SPIN-P02 (ПИЯФ-ИТЭФ).

P(-)-3 ПИЯФ-ИТЭФРезультаты измерений 2003 года (ПИЯФ-ИТЭФ)

ПИЯФ-1 Схема установки (ПИЯФ)

ПИЯФ-2 Распределение событий, pi(-)p –pi(0)n

ПИЯФ-3 Результаты ПИЯФ

CB-E-1

CB-E-2

CB-E-3

CB-E-4

CB-E-5 Crystal Barrel (ISKP, Bonn)

CB-M-1 Crystal Ball (Univ.Mainz)

CB-M-2 Crystal Ball (Univ.Mainz)

CB-M-3 Crystal Ball (Univ.Mainz)

CB-M-4 Crystal Ball (Univ.Mainz)

CB-M-5 Crystal Ball (Univ.Mainz)

CB-M-6 Crystal Ball (Univ.Mainz)

CB-B-1 Crystal Ball (BNL)

CB-B-2 Crystal Ball (BNL)

CB-B-3

CB-B-4 Crystal Ball (BNL)

J-PARC-1 Project for J-PARC (Japan). In Tables 1 and 2 we present limited intervals of kinematic variables for the second resonance region of N elastic scattering, which cover masses of baryon resonances from 1400 to 2000 MeV. The intervals were determined by analyzing zero trajectories of N transverse amplitudes obtained for three existing global PWAs: KA84, CMB and VPI solution SM95. In column 2 and 3 those intervals of lab. pion momentum and c.m.s. scattering angle are indicated, in which the existence of discrete ambiguities is mostly probable and, hence, measurements of the spin rotation parameters A and R in pion-proton elastic scattering are needed on the first turn. Expected counting rates can be estimated using values of c.m.s. differential cross sections given in column 4. A statistic precision at a level of ( Delta)A~0.1 or (Delta)R~0.1 is enough to distinguish different PWA solutions.

J-PARC-2 Project for J-PARC (Japan) Table 1: Elastic p- p scattering. (Regions with presumed existence of discrete ambiguities.) Number : Momentum region : Angle region : Diff. cross section : ( MeV/c) : c.m.s.(deg.) : (mb/sr) : 700 – 900 : : : 800 – 1000 : 155 – 175 : 0.08 – : 800 – 1200 : 80 – 100 : 0.13 – : 1600 – 1900 : 50 – 70 : 0.08 – : 1800 – 2100 : 130 – 150 : 0.03 –

J-PARC-3 Project for J-PARC (Japan). Table 2: Elastic p- p scattering. (Regions with presumed existence of discrete ambiguities.) Number Momentum region Angle region Diff. cross section ( MeV/c) c.m.s.(deg.) (mb/sr) – – – – – – – – – – – – – – – – – – –