What is S = –2 hypernuclei and its nuclear emulation?

  • I
  • Thread starter kodama
  • Start date
  • #1
kodama
969
132
TL;DR Summary
Experimental status of S = –2 hypernucle
i saw thisExperimental status of S = –2 hypernucle
Kazuma NAKAZAWA
Physics Department, Gifu University, Gifu 501-1193, Japan

link

https://journals.jps.jp/doi/pdf/10.7566/JPSCP.17.031001

and i would like to know more

its nuclear emulation

especially

page 3

Screenshot 2024-01-02 at 20-26-13 jpscp.17.031001.pdf.png


from page 3

https://journals.jps.jp/doi/pdf/10.7566/JPSCP.17.031001

what is V ? figure 3

by nuclear emulation V has mass 16-17 MeV and decay in to charged particles
 
Physics news on Phys.org
  • #2
kodama said:
View attachment 338041

from page 3

https://journals.jps.jp/doi/pdf/10.7566/JPSCP.17.031001

what is V ? figure 3

by nuclear emulation V has mass 16-17 MeV and decay in to charged particles
Not "V has mass". V has dimension of mass/energy.
Are you asking what is V or what is V0? These are different things (see equation (2)).
From my reading, V seems to be the actual binding energy of Ξ-. V0 is the total potential well depth - counting both the binding energy and zero point energy.
 
  • Like
Likes kodama
  • #3
snorkack said:
Not "V has mass". V has dimension of mass/energy.
Are you asking what is V or what is V0? These are different things (see equation (2)).
From my reading, V seems to be the actual binding energy of Ξ-. V0 is the total potential well depth - counting both the binding energy and zero point energy.
but it decay in to 2 in to charged particles-(electron ?)
 
  • #4
kodama said:
by nuclear emulation V has mass 16-17 MeV and decay in to charged particles
V is a potential. It's not a particle and it doesn't decay to anything.
##\Xi^-## bound in nuclei decay to other things.
 
  • Like
Likes Vanadium 50 and kodama
  • #5
mfb said:
V is a potential. It's not a particle and it doesn't decay to anything.
##\Xi^-## bound in nuclei decay to other things.
is ##\Xi^-## a particle
 
  • #6
kodama said:
is ##\Xi^-## a particle
Yes, it is.
Decay to electron is allowed but low probability. For a lone Λ, decay to electron has a branching ratio of 0,083%
 
  • Like
Likes kodama
  • #8
kodama said:
That I don´t think likely at all.
Late 1940s and 1950s were "particle zoo" period. Scientists had no clue what particles exist, they had not yet spotted the quark model periodicity system, so they had eyes open for any new particles they could see.
If there were any exotic particles, charged and low energy but with such a low formation cross-section that it was missed through 1950s, it is a weird coincidence that one should have been spotted back in 1946 and then none in 1950s.

On the other hand, 17 MeV quite fits the explanation in the article - potential well depth (baryon binding energy in nucleus+the zero point energy) and the binding energies of the stronger bound nuclei (like α) are in that region!
 
  • Like
Likes kodama and ohwilleke
  • #9
snorkack said:
That I don´t think likely at all.
LIf there were any exotic particles, charged and low energy
*uncharged but decay e+e-

snorkack said:
On the other hand, 17 MeV quite fits the explanation in the article - potential well depth (baryon binding energy in nucleus+the zero point energy) and the binding energies of the stronger bound nuclei (like α) are in that region!

not likely at all but it is possible 17 MeV could be a new unknown fundamental particle a boson?
 
Last edited:
  • #10
kodama said:
but it is possible 17 MeV could be a new unknown fundamental particle a boson?

And what answer do you expect?
 
  • #11
weirdoguy said:
And what answer do you expect?
not likely at all could suggest a possible exploration

in Bayesian theory

if
arXiv:2311.18632 (hep-ex)
Observation of structures at ∼17 and ∼38 MeV/c2 in the γγ invariant mass spectra in pC, dC, and dCu collisions at plab of a few GeV/c per nucleon
Kh.U. Abraamyan, Ch. Austin, M.I. Baznat, K.K. Gudima, M.A. Kozhin, S.G. Reznikov, A.S. Sorin

is true

and
arXiv:2308.06473 (nucl-ex)
[Submitted on 12 Aug 2023]
Observation of the X17 anomaly in the decay of the Giant Dipole Resonance of 8Be
A.J. Krasznahorkay,
what could be the 17 MeV in
Experimental status of S = –2 hypernucle
Kazuma NAKAZAWA
Physics Department, Gifu University, Gifu 501-1193, Japan

multiple experiment with 17 MeV decay in to e+e-
 
Last edited:

Similar threads

  • High Energy, Nuclear, Particle Physics
Replies
7
Views
1K
  • Beyond the Standard Models
2
Replies
39
Views
4K
  • MATLAB, Maple, Mathematica, LaTeX
Replies
1
Views
2K
  • MATLAB, Maple, Mathematica, LaTeX
Replies
5
Views
2K
  • MATLAB, Maple, Mathematica, LaTeX
Replies
5
Views
2K
Back
Top