Signatures of the d^{*}(2380) Hexaquark in d(γ,pn[over →]).

Journal

Physical review letters

ISSN: 1079-7114

Titre abrégé: Phys Rev Lett

Pays: United States

ID NLM: 0401141

Informations de publication

Date de publication:
03 Apr 2020

Historique:

revised: 30 01 2020

received: 19 11 2019

accepted: 02 03 2020

entrez: 18 4 2020

pubmed: 18 4 2020

medline: 18 4 2020

Statut: ppublish

Résumé

We report a measurement of the spin polarization of the recoiling neutron in deuterium photodisintegration, utilizing a new large acceptance polarimeter within the Crystal Ball at MAMI. The measured photon energy range of 300-700 MeV provides the first measurement of recoil neutron polarization at photon energies where the quark substructure of the deuteron plays a role, thereby providing important new constraints on photodisintegration mechanisms. A very high neutron polarization in a narrow structure centered around E_{γ}∼570 MeV is observed, which is inconsistent with current theoretical predictions employing nucleon resonance degrees of freedom. A Legendre polynomial decomposition suggests this behavior could be related to the excitation of the d^{*}(2380) hexaquark.

Identifiants

DOI: 10.1103/PhysRevLett.124.132001 PMID: 32302204

pubmed: 32302204

doi: 10.1103/PhysRevLett.124.132001

doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

132001

Auteurs

M Bashkanov (M)

Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.

D P Watts (DP)

Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.

S J D Kay (SJD)

University of Regina, Regina, SK S4S0A2 Canada.

S Abt (S)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

P Achenbach (P)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

P Adlarson (P)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

F Afzal (F)

Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany.

Z Ahmed (Z)

University of Regina, Regina, SK S4S0A2 Canada.

C S Akondi (CS)

Kent State University, Kent, Ohio 44242, USA.

J R M Annand (JRM)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

H J Arends (HJ)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

R Beck (R)

Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany.

M Biroth (M)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

N Borisov (N)

Joint Institute for Nuclear Research, 141980 Dubna, Russia.

A Braghieri (A)

INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy.

W J Briscoe (WJ)

Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA.

F Cividini (F)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

C Collicott (C)

Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada.

S Costanza (S)

INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy.

Dipartimento di Fisica, Università di Pavia, I-27100 Pavia, Italy.

A Denig (A)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

E J Downie (EJ)

Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA.

P Drexler (P)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

II. Physikalisches Institut, University of Giessen, D-35392 Giessen, Germany.

S Fegan (S)

Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.

A Fix (A)

Tomsk Polytechnic University, 634034 Tomsk, Russia.

S Gardner (S)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

D Ghosal (D)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

D I Glazier (DI)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

I Gorodnov (I)

Joint Institute for Nuclear Research, 141980 Dubna, Russia.

W Gradl (W)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

M Günther (M)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

D Gurevich (D)

Institute for Nuclear Research, RU-125047 Moscow, Russia.

L Heijkenskjöld (L)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

D Hornidge (D)

Mount Allison University, Sackville, New Brunswick E4L1E6, Canada.

G M Huber (GM)

University of Regina, Regina, SK S4S0A2 Canada.

A Käser (A)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

V L Kashevarov (VL)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

Joint Institute for Nuclear Research, 141980 Dubna, Russia.

M Korolija (M)

Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia.

B Krusche (B)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

A Lazarev (A)

Joint Institute for Nuclear Research, 141980 Dubna, Russia.

K Livingston (K)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

S Lutterer (S)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

I J D MacGregor (IJD)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

D M Manley (DM)

Kent State University, Kent, Ohio 44242, USA.

P P Martel (PP)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

Mount Allison University, Sackville, New Brunswick E4L1E6, Canada.

R Miskimen (R)

University of Massachusetts, Amherst, Massachusetts 01003, USA.

E Mornacchi (E)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

C Mullen (C)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

A Neganov (A)

Joint Institute for Nuclear Research, 141980 Dubna, Russia.

A Neiser (A)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

M Ostrick (M)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

P B Otte (PB)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

D Paudyal (D)

University of Regina, Regina, SK S4S0A2 Canada.

P Pedroni (P)

INFN Sezione di Pavia, I-27100 Pavia, Pavia, Italy.

A Powell (A)

SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

S N Prakhov (SN)

University of California Los Angeles, Los Angeles, California 90095-1547, USA.

G Ron (G)

Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.

A Sarty (A)

Department of Astronomy and Physics, Saint Mary's University, E4L1E6 Halifax, Canada.

C Sfienti (C)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

V Sokhoyan (V)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

K Spieker (K)

Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany.

O Steffen (O)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

I I Strakovsky (II)

Center for Nuclear Studies, The George Washington University, Washington, DC 20052, USA.

T Strub (T)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

I Supek (I)

Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia.

A Thiel (A)

Helmholtz-Institut für Strahlen- und Kernphysik, University Bonn, D-53115 Bonn, Germany.

M Thiel (M)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

A Thomas (A)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

Yu A Usov (YA)

Joint Institute for Nuclear Research, 141980 Dubna, Russia.

S Wagner (S)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

N K Walford (NK)

Department of Physics, University of Basel, Ch-4056 Basel, Switzerland.

D Werthmüller (D)

Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.

J Wettig (J)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

M Wolfes (M)

Institut für Kernphysik, University of Mainz, D-55099 Mainz, Germany.

N Zachariou (N)

Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom.

L A Zana (LA)

Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA.

Classifications MeSH