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Study hadron property and structure in high energy multiproduction process
by Shi-Yuan Li
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Submission summary
| Authors (as registered SciPost users): | Shi-Yuan Li |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202111_00054v1 (pdf) |
| Date submitted: | 2021-11-17 04:07 |
| Submitted by: | Li, Shi-Yuan |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 50th International Symposium on Multiparticle Dynamics (ISMD2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Experimental, Phenomenological |
Abstract
In high energy scattering, multiproduction process is unique in its relevance to the total cross section and in its global property such as rapidity and other kinematic distributions. If there is hard interaction, the jet rate and structure is a good arena of perturbative chromodynamics. However, once any hadron is specified, its property and structure must make sense while the global and/or perturbative chromodynamics mechanism still can put important constrains. The relation of the hadron property and structure with its production cross section, distribution etc. can be much more complex than its decay width. In one hand there are many difficulties and challenges in calculation; on the other hand, production process provides unique way to study the details of property and structure of the hadron, which is beyond the approach of its decay process. Here I review our works on such topic in recent years, mainly on the multiquark state production in multiproduction process and the Bethe-Salpeter wave function in exclusive process. For the former, I emphasize on the unitarity of hadronization process and relevant models, so that Almost No multiquark state is observed in multiproduction process; I also address how to calculate hadron molecule production in multiproduction process; the most recent observed $T^+_{cc}$ is also stated with its relevance to colour and baryon number fluctuation of the preconfinement clusters. For the latter, I emphasize the Dirac structure of the hadron-quark coupling vertex.
Current status:
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2022-1-29 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202111_00054v1, delivered 2022-01-29, doi: 10.21468/SciPost.Report.4275
Report
These give a good summary of the physics that was presented at the ISMD21 conference. I recommend them for publication. I have fairly extensive, though generally minor, comments regarding typos/grammar/clarity.
Requested changes
1. Title: suggest a minor change to: "The study of hadron properties and structure in high energy multi-production processes"
Abstract:
2. '... the multiproduction process is unique.... and in its global properties, such as...'
3. 'If there is a hard interaction... for perturbative quantum chromodynamics.' (note several changes)
4. '... its properties and structure must make sense, while the ... chromodynamic mechanism ... constraints.' (note several changes)
5. 'The relation of the hadron's properties and structure with...'
6. 'On the one hand, there are... in the calculations, while on the other hand, the production process provides a unique way to study the details of the properties and ...' (note several changes)
7. 'on such topics...'
8. '... in multiproduction processes and... exclusive processes.'
9. '.. I emphasize the unitarity of the hadronization process...'
10. Almost No -> almost no
11. '... is observed in multiproduction processes.' (many instances of where 'process' should be 'processes'. Please check and correct, in case I have missed any).
12. New sentence: 'I also address...'
13. New sentence: 'The most recent...'
page 2 (note that in most cases there may be more than one adjustment per numbered point):
sec 1:
14. 'Multiple particle systems are mainly produced from high energy scatterings...'
15. ' ... reason for the increasing total cross section.. scattering [1].'
16. '.. in high energy scattering.'
17. '... the multi-production process... also a copious...'
18. '... are a good arena to...'
19. 'Compared to other ways of studying hadron structure, such as ... , decay width distributions, ... (e.g. DIS), etc., this...'
20. 'However, this is why... provide more complex...'
21. 'On the one hand, there are many... in the calculations, while on the other hand, the production process provides a unique... study the details of properties and ...'
22. '.. structure and properties of a specific hadron.'
23: 'Our study has two aspects: one is the global properties, putting constraints on....; the other is looking at the concrete .... structure of certain hadrons.'
sec 2:
24. 'Prompt production of multi-quark states... in high energy scattering... for understanding the hadronization...' (maybe also change 'point' -> 'bench-mark', assuming this is your meaning ?)
25. '.. eventually transitions to various.... with a total probability of 1, which...'
26. 'This process conserved entropy, since it only makes a unitary ... in the density...' (I hope I have not changed the meaning here? If what I say is not quite right, please modify in a way that is correct and also makes grammatical sense)
27. '.. that combination process/model will decrease the entropy...' - sentence does not make grammatical sense, please reword.
28. '... that energy conservation and...'
29. '.. for hadronization models/the mechanism... the color-singlet..'
30. 'As a matter of fact, from experiments, the...'
31. 'exotic particles...' (I assume!?)
32. '... how they share the total probability, $'epsilon$. It is not easy...'
33. 'What we can say, though, is that it seems that if there are many kinds of ...'
34. '.. almost no multiquark states observed in the final state of multi-production processes.'
35. '... are observed to be produced from the decays of... (e.g. bottom hadrons), rather...'
36. '.. understood, not only... independent of the collision energy, and results from the interplay.'
page 3:
37. '... especially in the case of a large number of quarks... (e.g. in high..).'
38. 'Furthermore, one has to... e.g. strangeness.'
39. '... all kinds of multi-quark state hadrons have one common property; that the bound... in a color-singlet state.'
40. '... so each method of grouping/reduction seems to have no special physical reason.'
41. '... in other circumstances, under the name of 'colour recombination/rearrangement' ...'
42. 'multiquark hadrons...' (or multi-quark hadrons, depending on what you decide regarding hyphens - see below)
43: '.. duality: even the production... hadrons is considered ...'
44. suggest a new sentence: 'The subsequent color interactions... eventually transition this 'molecule' into... - and vice versa [10-14].' (note I have also changed colour -> color here, since the latter spelling is what you have used elsewhere. Feel free to choose the British spelling of 'colour' especially as the conference was UK-hosted, but please be consistent either way, ad use the same spelling everywhere. There are a few other instances of color or colour being used throughout the document, so please check everything and go one way or the other.
45. Though I have suggested some changes in points 43, 44, the sentence is still quite hard to understand. You may wish to consider working a little bit to reword it for clarity.
46. typo in 'preconfinement'
47. '... non-trivial relevance to the multi-quark...'
sec 3:
48. '... in the e+e- continuum, below the mass of the $J/\Psi$, under the spirit of the Straton Model (i.e. the completely...)'
49. I do not know what to suggest for the last bit of the sentence '... besides before applied to heavy exclusive production, e.g.,...'. It does not make grammatical sense, so needs to be rewording. However, I am unsure what you really mean here. So, please reword carefully so that it does say what you mean.
50. '... via a triangle quark loop: the photon- ... Standard Model.'
51. '... vertex, in terms of the valence...'
52. '... in the Bethe-Salpeter...'
53. 'This method also explains ...'
sec 4:
54. '.. structure of hadrons via.... is important.'
55. 'The recently observed....'
56. add space: [17,18] is...'
57. '... multi-HEAVY-quark bound states is...'
58. 'Now, three pairs of... carefully .... at the LHC (see e.g. [20]).'
** General comment: there is sometimes inconsistent use of hyphenation and spelling e.g. sometimes 'multiproduction/quark' is used, and sometimes or 'multi-production/quark'. An example of spelling is 'color' versus 'colour' as mentioned above. Please unify.