On a possible observation of "dihelion" in dissociation of relativistic   $^9$C nuclei

D. A. Artemenkov; N. K. Kornegrutsa; D. O. Krivenkov; R. Stanoeva and; P. I. Zarubin

arXiv:1105.3813·nucl-ex·May 28, 2015

On a possible observation of "dihelion" in dissociation of relativistic $^9$C nuclei

D. A. Artemenkov, N. K. Kornegrutsa, D. O. Krivenkov, R. Stanoeva and, P. I. Zarubin

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TL;DR

This study investigates the potential observation of a dihelion resonance in the dissociation of relativistic $^9$C nuclei, using nuclear track emulsion to identify narrow-angle $^3$He pairs.

Contribution

It reports the possible detection of a dihelion resonance near the $^3$He production threshold in relativistic $^9$C dissociation, a novel observation in nuclear physics.

Findings

01

Observation of narrow $^3$He pairs in $^9$C dissociation

02

Possible evidence for a $^3$He resonance near threshold

03

First experimental hint of dihelion in this context

Abstract

Nuclear track emulsion is exposed to 1.2 A $^{9}$ C GeV nuclei. Pairs of 2 $^{3}$ He nuclei having unusually narrow opening angles are observed in channel $^{9}$ C $\to$ 3 $^{3}$ He pointing to the possible 2 $^{3}$ He resonance near the production threshold.

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