First measurement of polarisation transfer $C^n_{x'}$ in deuteron photodisintegration and the signatures of the $d^*(2380)$ hexaquark

A2 Collaboration

First measurement of polarisation transfer $C^n_{x'}$ in deuteron photodisintegration and the signatures of the $d^*(2380)$ hexaquark

A2 Collaboration

Research output: Working paper › Preprint

Abstract

A first measurement of the polarisation transfer from a circularly-polarised photon to the final state neutron ($C^n_{x'}$) in deuterium photodisintegration has been carried out. This quantity is determined over the photon energy range 370~--~700~MeV and for neutron centre-of-mass breakup angles $\sim45-120^{\circ}$. An ancillary large-acceptance nucleon polarimeter, surrounding a cryogenic liquid deuterium target within the Crystal Ball detector at MAMI, characterised $(n,p)$ charge exchange of the ejected neutrons to determine their polarisation. The correlation of the new $C^n_{x'}$ data is consistent with previous measurements of the induced polarisation, $P^n_y$, through Argand-type plots of $C^n_{x'}-P^n_y$ are consistent with a resonant phase motion in the region of the $d^*(2380)$ hexaquark.

Original language	Undefined/Unknown
Publisher	arXiv
Publication status	Published - 24 Jun 2022

Keywords

nucl-ex

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2206.12299v2

Open-access data for paper "First measurement of polarisation transfer C^n_{x'} in deuteron photodisintegration and the signatures of the d^*(2380) hexaquark"
Bashkanov, M. (Creator), University of York, 24 Jun 2022
DOI: 10.15124/81153322-7ce4-4c28-9e69-2cbb3651f2e6
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title = "First measurement of polarisation transfer $C^n_{x'}$ in deuteron photodisintegration and the signatures of the $d^*(2380)$ hexaquark",

abstract = "A first measurement of the polarisation transfer from a circularly-polarised photon to the final state neutron ($C^n_{x'}$) in deuterium photodisintegration has been carried out. This quantity is determined over the photon energy range 370~--~700~MeV and for neutron centre-of-mass breakup angles $\sim45-120^{\circ}$. An ancillary large-acceptance nucleon polarimeter, surrounding a cryogenic liquid deuterium target within the Crystal Ball detector at MAMI, characterised $(n,p)$ charge exchange of the ejected neutrons to determine their polarisation. The correlation of the new $C^n_{x'}$ data is consistent with previous measurements of the induced polarisation, $P^n_y$, through Argand-type plots of $C^n_{x'}-P^n_y$ are consistent with a resonant phase motion in the region of the $d^*(2380)$ hexaquark.",

keywords = "nucl-ex",

author = "{A2 Collaboration} and M. Bashkanov and Watts, {D. P.} and Kay, {S. J. D.} and S. Abt and P. Achenbach and P. Adlarson and F. Afzal and Z. Ahmed and Akondi, {C. S.} and Annand, {J. R. M.} and Arends, {H. J.} and R. Beck and M. Biroth and N. Borisov and A. Braghieri and Briscoe, {W. J.} and F. Cividini and C. Collicott and S. Costanza and A. Denig and Downie, {E. J.} and P. Drexler and S. Fegan and A. Fix and S. Gardner and D. Ghosal and Glazier, {D. I.} and I. Gorodnov and W. Gradl and M. Guenther and D. Gurevich and L. Heijkenskj{\"o}ld and D. Hornidge and Huber, {G. M.} and A. K{\"a}ser and Kashevarov, {V. L.} and M. Korolija and B. Krusche and A. Lazarev and K. Livingston and S. Lutterer and MacGregor, {I. J. D.} and Manley, {D. M.} and Martel, {P. P.} and R. Miskimen and E. Mornacchi and C. Mullen and A. Neganov and A. Neiser and N. Zachariou",

year = "2022",

month = jun,

day = "24",

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publisher = "arXiv",

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T1 - First measurement of polarisation transfer $C^n_{x'}$ in deuteron photodisintegration and the signatures of the $d^*(2380)$ hexaquark

AU - A2 Collaboration

AU - Bashkanov, M.

AU - Watts, D. P.

AU - Kay, S. J. D.

AU - Abt, S.

AU - Achenbach, P.

AU - Adlarson, P.

AU - Afzal, F.

AU - Ahmed, Z.

AU - Akondi, C. S.

AU - Annand, J. R. M.

AU - Arends, H. J.

AU - Beck, R.

AU - Biroth, M.

AU - Borisov, N.

AU - Braghieri, A.

AU - Briscoe, W. J.

AU - Cividini, F.

AU - Collicott, C.

AU - Costanza, S.

AU - Denig, A.

AU - Downie, E. J.

AU - Drexler, P.

AU - Fegan, S.

AU - Fix, A.

AU - Gardner, S.

AU - Ghosal, D.

AU - Glazier, D. I.

AU - Gorodnov, I.

AU - Gradl, W.

AU - Guenther, M.

AU - Gurevich, D.

AU - Heijkenskjöld, L.

AU - Hornidge, D.

AU - Huber, G. M.

AU - Käser, A.

AU - Kashevarov, V. L.

AU - Korolija, M.

AU - Krusche, B.

AU - Lazarev, A.

AU - Livingston, K.

AU - Lutterer, S.

AU - MacGregor, I. J. D.

AU - Manley, D. M.

AU - Martel, P. P.

AU - Miskimen, R.

AU - Mornacchi, E.

AU - Mullen, C.

AU - Neganov, A.

AU - Neiser, A.

AU - Zachariou, N.

PY - 2022/6/24

Y1 - 2022/6/24

N2 - A first measurement of the polarisation transfer from a circularly-polarised photon to the final state neutron ($C^n_{x'}$) in deuterium photodisintegration has been carried out. This quantity is determined over the photon energy range 370~--~700~MeV and for neutron centre-of-mass breakup angles $\sim45-120^{\circ}$. An ancillary large-acceptance nucleon polarimeter, surrounding a cryogenic liquid deuterium target within the Crystal Ball detector at MAMI, characterised $(n,p)$ charge exchange of the ejected neutrons to determine their polarisation. The correlation of the new $C^n_{x'}$ data is consistent with previous measurements of the induced polarisation, $P^n_y$, through Argand-type plots of $C^n_{x'}-P^n_y$ are consistent with a resonant phase motion in the region of the $d^*(2380)$ hexaquark.

AB - A first measurement of the polarisation transfer from a circularly-polarised photon to the final state neutron ($C^n_{x'}$) in deuterium photodisintegration has been carried out. This quantity is determined over the photon energy range 370~--~700~MeV and for neutron centre-of-mass breakup angles $\sim45-120^{\circ}$. An ancillary large-acceptance nucleon polarimeter, surrounding a cryogenic liquid deuterium target within the Crystal Ball detector at MAMI, characterised $(n,p)$ charge exchange of the ejected neutrons to determine their polarisation. The correlation of the new $C^n_{x'}$ data is consistent with previous measurements of the induced polarisation, $P^n_y$, through Argand-type plots of $C^n_{x'}-P^n_y$ are consistent with a resonant phase motion in the region of the $d^*(2380)$ hexaquark.

KW - nucl-ex

M3 - Preprint

BT - First measurement of polarisation transfer $C^n_{x'}$ in deuteron photodisintegration and the signatures of the $d^*(2380)$ hexaquark

PB - arXiv

ER -

First measurement of polarisation transfer $C^n_{x'}$ in deuteron photodisintegration and the signatures of the $d^*(2380)$ hexaquark

Abstract

Keywords

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Datasets

Open-access data for paper "First measurement of polarisation transfer C^n_{x'} in deuteron photodisintegration and the signatures of the d^*(2380) hexaquark"

Cite this