First Measurement of Near-Threshold J/ψ Exclusive Photoproduction off the Proton.

Journal

Physical review letters

ISSN: 1079-7114

Titre abrégé: Phys Rev Lett

Pays: United States

ID NLM: 0401141

Informations de publication

Date de publication:
16 Aug 2019

Historique:

revised: 05 07 2019

received: 28 05 2019

entrez: 7 9 2019

pubmed: 7 9 2019

medline: 7 9 2019

Statut: ppublish

Résumé

We report on the measurement of the γp→J/ψp cross section from E_{γ}=11.8 GeV down to the threshold at 8.2 GeV using a tagged photon beam with the GlueX experiment. We find that the total cross section falls toward the threshold less steeply than expected from two-gluon exchange models. The differential cross section dσ/dt has an exponential slope of 1.67±0.39 GeV^{-2} at 10.7 GeV average energy. The LHCb pentaquark candidates P_{c}^{+} can be produced in the s channel of this reaction. We see no evidence for them and set model-dependent upper limits on their branching fractions B(P_{c}^{+}→J/ψp) and cross sections σ(γp→P_{c}^{+})×B(P_{c}^{+}→J/ψp).

Identifiants

DOI: 10.1103/PhysRevLett.123.072001 PMID: 31491124

pubmed: 31491124

doi: 10.1103/PhysRevLett.123.072001

doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

072001

Auteurs

A Ali (A)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

M Amaryan (M)

Old Dominion University, Norfolk, Virginia 23529, USA.

E G Anassontzis (EG)

National and Kapodistrian University of Athens, 15771 Athens, Greece.

A Austregesilo (A)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

M Baalouch (M)

Old Dominion University, Norfolk, Virginia 23529, USA.

F Barbosa (F)

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

J Barlow (J)

Florida State University, Tallahassee, Florida 32306, USA.

A Barnes (A)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

E Barriga (E)

Florida State University, Tallahassee, Florida 32306, USA.

T D Beattie (TD)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

V V Berdnikov (VV)

National Research Nuclear University Moscow Engineering Physics Institute, Moscow 115409, Russia.

T Black (T)

University of North Carolina at Wilmington, Wilmington, North Carolina 28403, USA.

W Boeglin (W)

Florida International University, Miami, Florida 33199, USA.

M Boer (M)

The Catholic University of America, Washington, D.C. 20064, USA.

W J Briscoe (WJ)

The George Washington University, Washington, D.C. 20052, USA.

T Britton (T)

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

W K Brooks (WK)

Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.

B E Cannon (BE)

Florida State University, Tallahassee, Florida 32306, USA.

N Cao (N)

Institute of High Energy Physics, Beijing 100049, People's Republic of China.

E Chudakov (E)

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

S Cole (S)

Arizona State University, Tempe, Arizona 85287, USA.

O Cortes (O)

The George Washington University, Washington, D.C. 20052, USA.

V Crede (V)

Florida State University, Tallahassee, Florida 32306, USA.

M M Dalton (MM)

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

T Daniels (T)

University of North Carolina at Wilmington, Wilmington, North Carolina 28403, USA.

A Deur (A)

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

S Dobbs (S)

Florida State University, Tallahassee, Florida 32306, USA.

A Dolgolenko (A)

National Research Centre Kurchatov Institute, Institute for Theoretical and Experimental Physics, Moscow 117259, Russia.

R Dotel (R)

Florida International University, Miami, Florida 33199, USA.

M Dugger (M)

Arizona State University, Tempe, Arizona 85287, USA.

R Dzhygadlo (R)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

H Egiyan (H)

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

A Ernst (A)

Florida State University, Tallahassee, Florida 32306, USA.

P Eugenio (P)

Florida State University, Tallahassee, Florida 32306, USA.

C Fanelli (C)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

S Fegan (S)

The George Washington University, Washington, D.C. 20052, USA.

A M Foda (AM)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

J Foote (J)

Indiana University, Bloomington, Indiana 47405, USA.

J Frye (J)

Indiana University, Bloomington, Indiana 47405, USA.

S Furletov (S)

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

L Gan (L)

University of North Carolina at Wilmington, Wilmington, North Carolina 28403, USA.

A Gasparian (A)

North Carolina A&T State University, Greensboro, North Carolina 27411, USA.

V Gauzshtein (V)

Tomsk State University, 634050 Tomsk, Russia.

Tomsk Polytechnic University, 634050 Tomsk, Russia.

N Gevorgyan (N)

A.I. Alikhanian National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia.

C Gleason (C)

Indiana University, Bloomington, Indiana 47405, USA.

K Goetzen (K)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

A Goncalves (A)

Florida State University, Tallahassee, Florida 32306, USA.

V S Goryachev (VS)

National Research Centre Kurchatov Institute, Institute for Theoretical and Experimental Physics, Moscow 117259, Russia.

L Guo (L)

Florida International University, Miami, Florida 33199, USA.

H Hakobyan (H)

Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.

A Hamdi (A)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

S Han (S)

Wuhan University, Wuhan, Hubei 430072, People's Republic of China.

J Hardin (J)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

G M Huber (GM)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

A Hurley (A)

College of William and Mary, Williamsburg, Virginia 23185, USA.

D G Ireland (DG)

University of Glasgow, Glasgow G12 8QQ, United Kingdom.

M M Ito (MM)

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

N S Jarvis (NS)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

R T Jones (RT)

University of Connecticut, Storrs, Connecticut 06269, USA.

V Kakoyan (V)

A.I. Alikhanian National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia.

G Kalicy (G)

The Catholic University of America, Washington, D.C. 20064, USA.

M Kamel (M)

Florida International University, Miami, Florida 33199, USA.

C Kourkoumelis (C)

National and Kapodistrian University of Athens, 15771 Athens, Greece.

S Kuleshov (S)

Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.

I Kuznetsov (I)

Tomsk State University, 634050 Tomsk, Russia.

Tomsk Polytechnic University, 634050 Tomsk, Russia.

I Larin (I)

University of Massachusetts, Amherst, Massachusetts 01003, USA.

D Lawrence (D)

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

D I Lersch (DI)

Florida State University, Tallahassee, Florida 32306, USA.

H Li (H)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

W Li (W)

College of William and Mary, Williamsburg, Virginia 23185, USA.

B Liu (B)

Institute of High Energy Physics, Beijing 100049, People's Republic of China.

K Livingston (K)

University of Glasgow, Glasgow G12 8QQ, United Kingdom.

G J Lolos (GJ)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

V Lyubovitskij (V)

Tomsk State University, 634050 Tomsk, Russia.

Tomsk Polytechnic University, 634050 Tomsk, Russia.

D Mack (D)

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

H Marukyan (H)

A.I. Alikhanian National Science Laboratory (Yerevan Physics Institute), 0036 Yerevan, Armenia.

V Matveev (V)

National Research Centre Kurchatov Institute, Institute for Theoretical and Experimental Physics, Moscow 117259, Russia.

M McCaughan (M)

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

M McCracken (M)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

W McGinley (W)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

J McIntyre (J)

University of Connecticut, Storrs, Connecticut 06269, USA.

C A Meyer (CA)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

R Miskimen (R)

University of Massachusetts, Amherst, Massachusetts 01003, USA.

R E Mitchell (RE)

Indiana University, Bloomington, Indiana 47405, USA.

F Mokaya (F)

University of Connecticut, Storrs, Connecticut 06269, USA.

F Nerling (F)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

L Ng (L)

Florida State University, Tallahassee, Florida 32306, USA.

A I Ostrovidov (AI)

Florida State University, Tallahassee, Florida 32306, USA.

Z Papandreou (Z)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

M Patsyuk (M)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

P Pauli (P)

University of Glasgow, Glasgow G12 8QQ, United Kingdom.

R Pedroni (R)

North Carolina A&T State University, Greensboro, North Carolina 27411, USA.

L Pentchev (L)

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

K J Peters (KJ)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

W Phelps (W)

The George Washington University, Washington, D.C. 20052, USA.

E Pooser (E)

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

N Qin (N)

Northwestern University, Evanston, Illinois 60208, USA.

J Reinhold (J)

Florida International University, Miami, Florida 33199, USA.

B G Ritchie (BG)

Arizona State University, Tempe, Arizona 85287, USA.

L Robison (L)

Northwestern University, Evanston, Illinois 60208, USA.

D Romanov (D)

National Research Nuclear University Moscow Engineering Physics Institute, Moscow 115409, Russia.

C Romero (C)

Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.

C Salgado (C)

Norfolk State University, Norfolk, Virginia 23504, USA.

A M Schertz (AM)

College of William and Mary, Williamsburg, Virginia 23185, USA.

R A Schumacher (RA)

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

J Schwiening (J)

GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.

K K Seth (KK)

Northwestern University, Evanston, Illinois 60208, USA.

X Shen (X)

Institute of High Energy Physics, Beijing 100049, People's Republic of China.

M R Shepherd (MR)

Indiana University, Bloomington, Indiana 47405, USA.

E S Smith (ES)

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

D I Sober (DI)

The Catholic University of America, Washington, D.C. 20064, USA.

A Somov (A)

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

S Somov (S)

National Research Nuclear University Moscow Engineering Physics Institute, Moscow 115409, Russia.

O Soto (O)

Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile.

J R Stevens (JR)

College of William and Mary, Williamsburg, Virginia 23185, USA.

I I Strakovsky (II)

The George Washington University, Washington, D.C. 20052, USA.

K Suresh (K)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

V Tarasov (V)

National Research Centre Kurchatov Institute, Institute for Theoretical and Experimental Physics, Moscow 117259, Russia.

S Taylor (S)

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

A Teymurazyan (A)

University of Regina, Regina, Saskatchewan, Canada S4S 0A2.

A Thiel (A)

University of Glasgow, Glasgow G12 8QQ, United Kingdom.

G Vasileiadis (G)

National and Kapodistrian University of Athens, 15771 Athens, Greece.

D Werthmüller (D)

University of Glasgow, Glasgow G12 8QQ, United Kingdom.

T Whitlatch (T)

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

N Wickramaarachchi (N)

Old Dominion University, Norfolk, Virginia 23529, USA.

M Williams (M)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

T Xiao (T)

Northwestern University, Evanston, Illinois 60208, USA.

Y Yang (Y)

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

J Zarling (J)

Indiana University, Bloomington, Indiana 47405, USA.

Z Zhang (Z)

Wuhan University, Wuhan, Hubei 430072, People's Republic of China.

G Zhao (G)

Institute of High Energy Physics, Beijing 100049, People's Republic of China.

Q Zhou (Q)

Institute of High Energy Physics, Beijing 100049, People's Republic of China.

X Zhou (X)

Wuhan University, Wuhan, Hubei 430072, People's Republic of China.

B Zihlmann (B)

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

Classifications MeSH