The $D_{03}(2380)$ dibaryon resonance excitation in the $pd\to pd\pi\pi$ reaction.

Submission summary

 As Contributors: Nurbek Tursunbayev Preprint link: scipost_201911_00036v1 Date accepted: 2019-12-10 Date submitted: 2019-11-14 Submitted by: Tursunbayev, Nurbek Submitted to: SciPost Physics Proceedings Proceedings issue: 24th European Few Body Conference (University of Surrey, U.K.) Discipline: Physics Subject area: Nuclear Physics - Theory Approach: Theoretical

Abstract

The recent ANKE@COSY data on the differential cross section of reaction $pd \to pd\pi\pi$ demonstrate a peak at invariant mass of the final $d\pi\pi$ system $2.38~GeV$, that corresponds to the isocalar $J^P = 3^+$ dibaryon $D_{03}$, and also enhancement in the distribution over the invariant mass of two final pions. The two-resonance model involving the $t$-channel $\sigma$-meson exchange between the proton and deuteron in the subprocess $pd\to pD_{03}$ and the sequential decays $D_{03}\to D_{12}+\pi$ and $D_{12}\to d +\pi$ was applied to describe the shapes of these distributions with the lowest orbital angular momenta in the corresponding vertices. A possible role of higher orbital momenta in those vertices is studied here.

Published as SciPost Phys. Proc. 3, 056 (2020)

Submission & Refereeing History

Submission scipost_201911_00036v1 on 14 November 2019

Reports on this Submission

Anonymous Report 1 on 2019-12-6 Invited Report

• Cite as: Anonymous, Report on arXiv:scipost_201911_00036v1, delivered 2019-12-06, doi: 10.21468/SciPost.Report.1376

Report

The paper concerns model calculations of the excitation of dibaryon resonances, extending some previously published work by including higher values of angular momenta in the transition matrix elements. Apart from a small number of minor typos, this article is suitable for publication as a conference proceedings.

Requested changes

1. Re-write the first sentence in the introduction - it is currently too complicated, and does not make sense.

2. page 2, line 24: cocerning -> concerning

3. page 2, line 32: mechanim -> mechanism

4. page 5, line 3: formatting

5. Page 6, table 1: clearer labelling of columns 3 and 4 (they currently have the same heading!)

6. Page 7, figure 4 caption: scatering -> scattering

7. page 7, line 17: tyhe -> the

• validity: good
• significance: ok
• originality: good
• clarity: -
• formatting: -
• grammar: acceptable