Study of the reaction npπ → npπ+π− at 1.0 and 1.5 GeV

The self-consistent approach based on similarity of inclusive spectra of hadrons produced in pp and AA collisions is reviewed. This approach allows us to describe rather well the ratio of proton to anti-proton yields in AA collisions as a function of the initial energy at a wide range from a few GeV to a few TeV. We suggest its modification due to the quark-gluon dynamics to describe the inclusive spectra of hadrons produced in pp collision as a function of the transverse momentum p t at mid-rapidity. The extension of this approach to analyze the pion p t -spectra produced in AA collision at high and middle energies and mid-rapidity is given. The satisfactory description of experimental data on these spectra in pp and AA collisions within the offered approach is shown.

show abstract

“…2. There is a good agreement with the NA61 data [24] at 6 GeV < √ s <18 GeV and the JINR data [25,26] at 2 GeV < √ s < 4 GeV.…”

Section: Quark-gluon Dynamics Of Soft Nn Interaction and Self-similarsupporting

confidence: 84%

“…16. The points at 6 GeV< √ s <18 GeV are the NA61 data [24], the points at 2 GeV < √ s < 4 GeV are the data extracted from [25,26]. m t < 1 GeV/c 2 .…”

Section: Quark-gluon Dynamics Of Soft Nn Interaction and Self-similarmentioning

confidence: 99%

Self-consistent analysis of hadron production in pp and AA collisions at mid-rapidity

Lykasov

Malakhov

2018

Eur. Phys. J. A

View full text Add to dashboard Cite

show abstract

“…Early measurements of two-pion production initiated by nucleon-nucleon (NN) collisions were conducted with bubble chambers, where due to low statistics primarily only results for total cross sections were obtained [1][2][3][4][5][6][7]. In recent years the two-pion production has been measured from threshold up to incident energies of T p = 1.4 GeV with high accuracy by exclusive and kinematically complete experiments conducted at CELSIUS [8][9][10][11][12][13][14][15][16], COSY [17][18][19][20][21][22][23][24], GSI [25], and JINR [26]. Whereas initially proton-proton (pp)-induced twopion production was the primary aim of these measurements [8][9][10][11][12][13][14][15][17][18][19], the interest moved later to proton-neutron (pn)induced reaction channels, after the first clear-cut evidence for a dibaryon resonance with I (J P ) = 0(3 + ) had been observed in the pn → dπ 0 π 0 reaction [16,20,21].…”

Section: Introductionmentioning

confidence: 99%

Examination of the production of an isotensor dibaryon in the pp→ppπ+π− reaction

Adlarson¹,

Augustyniak²,

Bardan³

et al. 2019

Phys. Rev. C

View full text Add to dashboard Cite

P. ADLARSON et al. PHYSICAL REVIEW C 99, 025201 (2019) The quasifree pp → ppπ + π − reaction has been measured by means of pd collisions at T p = 1.2 GeV using the WASA detector setup at COSY enabling exclusive and kinematically complete measurements. Total and differential cross sections have been extracted for the energy region T p = 1.08-1.36 GeV ( √ s = 2.35-2.46 GeV) covering thus the regions of N * (1440) and (1232) (1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange as well as isospin relations based on the pp → ppπ 0 π 0 data underpredict substantially the measured total cross section. The calculations are also at variance with specific experimental differential cross sections. An isotensor N dibaryon resonance with I (J P ) = 2(1 + ) produced associatedly with a pion is able to overcome these deficiencies. Such a dibaryon was predicted by Dyson and Xuong [Phys. Rev. Lett. 13, 815 (1964)] and more recently calculated by A. Gal and H. Garcilazo [Nucl. Phys. A 928, 73 (2014)].

show abstract

“…The separation of the primary deuteron and secondary beams at focus point F6 is provided by the modernized analyzing magnet SP-41 [35]. The physics at F6 is related with the baryonic resonances spin properties studies at the energies between 2 and 6 GeV of the deuteron kinetic energy and includes the measurements of the tensor A yy and vector A y analyzing powers in quasi-elastic and inelastic A(d, pp)X reaction; of the tensor A yy and vector A y analyzing powers in the inelastic deuteron scattering A(d, d )X [47] and A(d, d )π ± X reactions; investigation of the vector analyzing power in neutron induced reactions (with the proton spectator detection) like np → pn, np → ppπ − , np → npπ + π − [49,50] etc. For these experiments the full size RPC wall is required.…”

Section: Other Possible Reaction At Extracted Deuteron Beammentioning

confidence: 99%

Investigation of reactions using polarized and unpolarized deuteron beam at Nuclotron: current status and perspectives

et al. 2017

View full text Add to dashboard Cite

Abstract. Deuteron induced reactions at intermediate energies are investigated at InternalTarget Station (ITS) of Nuclotron. The dp elastic scattering data have been accumulated in the angular range (70 • -120 • ) in c.m from 0.3 to 2.0 GeV of deuteron energy. Part of the obtained results of differential cross sections and analyzing powers of dp elastic scattering are compared with theoretical predictions based on relativistic multi-scattering model. The dp breakup data are obtained with the detection of two outgoing protons at the angles of (19 • -54 • ) in laboratory frame at the deuteron energies from 0.3 to 0.5 GeV in various detector configurations. One of the tools to study spin structure of short range correlations is the measurements of the cross section, tensor analyzing power T 20 and spin correlation parameter C y,y in the d

show abstract

Study of the reaction npπ → npπ+π− at 1.0 and 1.5 GeV

Abstract: The contribution of "hanged" diagrams into the reaction np → npπ + π − was considered. It was shown that taking into account of these diagrams permits to get better description of the effective mass spectrum of π + π − -combinations.

Cited by 16 publications

References 52 publications

Self-consistent analysis of hadron production in pp and AA collisions at mid-rapidity

Self-consistent analysis of hadron production in pp and AA collisions at mid-rapidity

Examination of the production of an isotensor dibaryon in the pp→ppπ+π− reaction

Investigation of reactions using polarized and unpolarized deuteron beam at Nuclotron: current status and perspectives

Contact Info

Product

Resources

About