π−πscattering andπ+dinteractions at 7 GeV/c

Abstract

Using bubble-chamber data on the reactions ~+ d -p , p n~~~, a+d-p,pa+n-, and a-p -nrt*at 7 GeV/c incident r momentum, 7-7 phase shifts are determined for 0.6 < M(m) < 1.5 G~v/c'. An I = 0 S-wave resonance is observed in the f O peak region of M(TT). Constructive P-W interference is found in the reaction xtn-p~+nand evidence is presented for some specifically deuteron effects in the data with large spectator-proton momentum.

LHC as π p and π π collider

“…For example, in Refs. [3][4][5] total and elastic ππ cross-sections were extracted in the energy domain 1.5-4.0 GeV from the cross-sections of exclusive processes with charge exchange. In Ref.…”

MonChER: Monte-Carlo generator for CHarge Exchange Reactions. Version 1.1. Physics and Manual

“…where, from recent data [18], [19], we expect b ≃ 0.3 GeV −2 . We are interested in the kinematical range 0.01 GeV 2 < |t| < 0.5 GeV 2 , ξ < 0.4, (10) where formula (8) dominates according to [20] and [21]. At high energies we can use any adequate parametrizations of different π + p cross-sections.…”

“…DOUBLE PRECISION SSPI,SSRHO,SSA2,SDPIS,SDPIA, & SDRHOS,SDRHOA,SDA2S,SDA2A,FFDPI,FFDRHO,FFDA2 COMMON/MONDGET/SSPI(6,53,41),SSRHO(6,53,51), & SSA2(6,53,51),SDPIS (6,10,8,9,8),SDPIA (6,10,8,9,8), & SDRHOS (6,10,8,9,8),SDRHOA(6,10,8,9,8),SDA2S (6,10,8,9,8), & SDA2A(6,10,8,9,8),FFDPI (6,60,16),FFDRHO (6,60,16), & FFDA2 (6,60,16) Purpose: to give access to the input tables. (17,17,17,17),DRHO (17,17,17,17),DA2 (17,17,17,17), & FDPI (17,17),FDRHO (17,17),FDA2 (17,17) Purpose: to give access to the tables for 2D and 4D generations.…”

“…(4,17,17,17),DDPI2 (4,17,17,17),DDPI3 (8,17,17,17,17), & DDRO1 (4,17,17,17),DDRO2 (4,17,17,17),DDRO3 (8,17,17,17,17), & DDA21 (4,17,17,17),DDA22 (4,17,17,17),DDA23 (8,17,17,17,17) Purpose: to give access to the auxiliary tables for 2D and 4D generations. DOUBLE PRECISION VXIR,VFIS,VFIA,VQTR, & VXIRF,VFIF,VXI,VQT,SVXI,SVQT,DVXI,DVQT COMMON/MONDVAR/VXIR (10),VFIS (8),VFIA (8),VQTR (9), & VXIRF(60),VFIF (16),VXI(53),VQT(41), & SVXI(41),SVQT(41),DVXI (17),DVQT (17) Purpose: to give access to the arrays of variables for the input and auxiliary tables. First, we set some values for elements of array MONPAR which control a pr...…”

“…4 GeV only (see Ref. [10]- [12]). Moreover, a study of charge exchange reactions with hard scattering π + p and π + π + followed by dijet production at the LHC, could provide us with parton distributions in the pion in the unexplored kinematical domain.…”