Deciphering the mechanism of near-threshold J/ψ photoproduction
The photoproduction of the J / ψ off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin of the proton mass, based on the QCD multipole expansion. On the other hand, it can be employed in a study of pentaquark...
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| Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2020-11, Vol.80 (11), Article 1053 |
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| container_title | The European physical journal. C, Particles and fields |
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| creator | Du, Meng-Lin Baru, Vadim Guo, Feng-Kun Hanhart, Christoph Meißner, Ulf-G. Nefediev, Alexey Strakovsky, Igor |
| description | The photoproduction of the
J
/
ψ
off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin of the proton mass, based on the QCD multipole expansion. On the other hand, it can be employed in a study of pentaquark states. The process is usually assumed to proceed through vector-meson dominance, that is the photon couples to a
J
/
ψ
which rescatters with the proton to give the
J
/
ψ
p
final state. In this paper, we provide a compelling hint for and propose measurements necessary to confirm a novel production mechanism via the
Λ
c
D
¯
(
∗
)
intermediate states. In particular, there must be cusp structures at the
Λ
c
D
¯
(
∗
)
thresholds in the energy dependence of the
J
/
ψ
photoproduction cross section. The same mechanism also implies the
J
/
ψ
-nucleon scattering lengths of order 1 mfm. Given this, one expects only a minor contribution of charm quarks to the nucleon mass. |
| doi_str_mv | 10.1140/epjc/s10052-020-08620-5 |
| format | Article |
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J
/
ψ
off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin of the proton mass, based on the QCD multipole expansion. On the other hand, it can be employed in a study of pentaquark states. The process is usually assumed to proceed through vector-meson dominance, that is the photon couples to a
J
/
ψ
which rescatters with the proton to give the
J
/
ψ
p
final state. In this paper, we provide a compelling hint for and propose measurements necessary to confirm a novel production mechanism via the
Λ
c
D
¯
(
∗
)
intermediate states. In particular, there must be cusp structures at the
Λ
c
D
¯
(
∗
)
thresholds in the energy dependence of the
J
/
ψ
photoproduction cross section. The same mechanism also implies the
J
/
ψ
-nucleon scattering lengths of order 1 mfm. Given this, one expects only a minor contribution of charm quarks to the nucleon mass.</description><identifier>ISSN: 1434-6044</identifier><identifier>EISSN: 1434-6052</identifier><identifier>DOI: 10.1140/epjc/s10052-020-08620-5</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Astronomy ; Astrophysics and Cosmology ; Charm (particle physics) ; Elementary Particles ; Hadrons ; Heavy Ions ; Measurement Science and Instrumentation ; Multipoles ; Nuclear Energy ; Nuclear Physics ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; Nucleons ; Photoproduction ; Physics ; Physics and Astronomy ; Protons ; Quantum chromodynamics ; Quantum Field Theories ; Quantum Field Theory ; Regular Article – Theoretical Physics ; String Theory ; Vector mesons</subject><ispartof>The European physical journal. C, Particles and fields, 2020-11, Vol.80 (11), Article 1053</ispartof><rights>The Author(s) 2020</rights><rights>The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c476t-3581d30b47f13ce89d2b55e6b86c51c030948541defea5e38d1d646eac597e4b3</citedby><cites>FETCH-LOGICAL-c476t-3581d30b47f13ce89d2b55e6b86c51c030948541defea5e38d1d646eac597e4b3</cites><orcidid>0000-0002-9988-9430 ; 0000-0003-1254-442X ; 0000-0002-7504-3107 ; 0000-0002-2919-2064 ; 0000-0001-6472-1008 ; 0000-0002-3509-2473 ; 0000-0001-8586-9482 ; 0000000164721008 ; 000000031254442X ; 0000000235092473 ; 0000000229192064 ; 0000000275043107 ; 0000000299889430 ; 0000000185869482</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1140/epjc/s10052-020-08620-5$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1140/epjc/s10052-020-08620-5$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>230,314,776,780,860,881,27901,27902,41096,41464,42165,42533,51294,51551</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1714391$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Du, Meng-Lin</creatorcontrib><creatorcontrib>Baru, Vadim</creatorcontrib><creatorcontrib>Guo, Feng-Kun</creatorcontrib><creatorcontrib>Hanhart, Christoph</creatorcontrib><creatorcontrib>Meißner, Ulf-G.</creatorcontrib><creatorcontrib>Nefediev, Alexey</creatorcontrib><creatorcontrib>Strakovsky, Igor</creatorcontrib><creatorcontrib>George Washington Univ., Washington, DC (United States)</creatorcontrib><title>Deciphering the mechanism of near-threshold J/ψ photoproduction</title><title>The European physical journal. C, Particles and fields</title><addtitle>Eur. Phys. J. C</addtitle><description>The photoproduction of the
J
/
ψ
off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin of the proton mass, based on the QCD multipole expansion. On the other hand, it can be employed in a study of pentaquark states. The process is usually assumed to proceed through vector-meson dominance, that is the photon couples to a
J
/
ψ
which rescatters with the proton to give the
J
/
ψ
p
final state. In this paper, we provide a compelling hint for and propose measurements necessary to confirm a novel production mechanism via the
Λ
c
D
¯
(
∗
)
intermediate states. In particular, there must be cusp structures at the
Λ
c
D
¯
(
∗
)
thresholds in the energy dependence of the
J
/
ψ
photoproduction cross section. The same mechanism also implies the
J
/
ψ
-nucleon scattering lengths of order 1 mfm. Given this, one expects only a minor contribution of charm quarks to the nucleon mass.</description><subject>Astronomy</subject><subject>Astrophysics and Cosmology</subject><subject>Charm (particle physics)</subject><subject>Elementary Particles</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Measurement Science and Instrumentation</subject><subject>Multipoles</subject><subject>Nuclear Energy</subject><subject>Nuclear Physics</subject><subject>NUCLEAR PHYSICS AND RADIATION PHYSICS</subject><subject>Nucleons</subject><subject>Photoproduction</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Protons</subject><subject>Quantum chromodynamics</subject><subject>Quantum Field Theories</subject><subject>Quantum Field Theory</subject><subject>Regular Article – Theoretical Physics</subject><subject>String Theory</subject><subject>Vector mesons</subject><issn>1434-6044</issn><issn>1434-6052</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNqFkE1OwzAQhS0EEqVwBiJYh4zjnzg7UPlXJTawthJnQlK1cbDdBTfgdlwJlyBYspkZjd4bvfkIOaVwQSmHDMeVyTwFEHkKOaSgZKxij8woZzyVcb__O3N-SI68XwFAzkHNyOU1mn7s0PXDaxI6TDZoumro_SaxbTJg5dLQOfSdXTfJY_b5kYydDXZ0ttma0NvhmBy01drjyU-fk5fbm-fFfbp8untYXC1TwwsZUiYUbRjUvGgpM6jKJq-FQFkraQQ1wKDkSnDaYIuVQKYa2kgusTKiLJDXbE7OprvWh15704cY1NhhQBM0LeJ_JY2i80kU871t0Qe9sls3xFw65wWVslCcRVUxqYyz3jts9ej6TeXeNQW9Y6p3TPXEVEem-pupFtGpJqcfd8DQ_d3_z_oFJvd9DQ</recordid><startdate>20201101</startdate><enddate>20201101</enddate><creator>Du, Meng-Lin</creator><creator>Baru, Vadim</creator><creator>Guo, Feng-Kun</creator><creator>Hanhart, Christoph</creator><creator>Meißner, Ulf-G.</creator><creator>Nefediev, Alexey</creator><creator>Strakovsky, Igor</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><general>Springer</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>L7M</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-9988-9430</orcidid><orcidid>https://orcid.org/0000-0003-1254-442X</orcidid><orcidid>https://orcid.org/0000-0002-7504-3107</orcidid><orcidid>https://orcid.org/0000-0002-2919-2064</orcidid><orcidid>https://orcid.org/0000-0001-6472-1008</orcidid><orcidid>https://orcid.org/0000-0002-3509-2473</orcidid><orcidid>https://orcid.org/0000-0001-8586-9482</orcidid><orcidid>https://orcid.org/0000000164721008</orcidid><orcidid>https://orcid.org/000000031254442X</orcidid><orcidid>https://orcid.org/0000000235092473</orcidid><orcidid>https://orcid.org/0000000229192064</orcidid><orcidid>https://orcid.org/0000000275043107</orcidid><orcidid>https://orcid.org/0000000299889430</orcidid><orcidid>https://orcid.org/0000000185869482</orcidid></search><sort><creationdate>20201101</creationdate><title>Deciphering the mechanism of near-threshold J/ψ photoproduction</title><author>Du, Meng-Lin ; 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C, Particles and fields</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Du, Meng-Lin</au><au>Baru, Vadim</au><au>Guo, Feng-Kun</au><au>Hanhart, Christoph</au><au>Meißner, Ulf-G.</au><au>Nefediev, Alexey</au><au>Strakovsky, Igor</au><aucorp>George Washington Univ., Washington, DC (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Deciphering the mechanism of near-threshold J/ψ photoproduction</atitle><jtitle>The European physical journal. C, Particles and fields</jtitle><stitle>Eur. Phys. J. C</stitle><date>2020-11-01</date><risdate>2020</risdate><volume>80</volume><issue>11</issue><artnum>1053</artnum><issn>1434-6044</issn><eissn>1434-6052</eissn><abstract>The photoproduction of the
J
/
ψ
off the proton is believed to deepen our understanding of various physics issues. On the one hand, it is proposed to provide access to the origin of the proton mass, based on the QCD multipole expansion. On the other hand, it can be employed in a study of pentaquark states. The process is usually assumed to proceed through vector-meson dominance, that is the photon couples to a
J
/
ψ
which rescatters with the proton to give the
J
/
ψ
p
final state. In this paper, we provide a compelling hint for and propose measurements necessary to confirm a novel production mechanism via the
Λ
c
D
¯
(
∗
)
intermediate states. In particular, there must be cusp structures at the
Λ
c
D
¯
(
∗
)
thresholds in the energy dependence of the
J
/
ψ
photoproduction cross section. The same mechanism also implies the
J
/
ψ
-nucleon scattering lengths of order 1 mfm. Given this, one expects only a minor contribution of charm quarks to the nucleon mass.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1140/epjc/s10052-020-08620-5</doi><orcidid>https://orcid.org/0000-0002-9988-9430</orcidid><orcidid>https://orcid.org/0000-0003-1254-442X</orcidid><orcidid>https://orcid.org/0000-0002-7504-3107</orcidid><orcidid>https://orcid.org/0000-0002-2919-2064</orcidid><orcidid>https://orcid.org/0000-0001-6472-1008</orcidid><orcidid>https://orcid.org/0000-0002-3509-2473</orcidid><orcidid>https://orcid.org/0000-0001-8586-9482</orcidid><orcidid>https://orcid.org/0000000164721008</orcidid><orcidid>https://orcid.org/000000031254442X</orcidid><orcidid>https://orcid.org/0000000235092473</orcidid><orcidid>https://orcid.org/0000000229192064</orcidid><orcidid>https://orcid.org/0000000275043107</orcidid><orcidid>https://orcid.org/0000000299889430</orcidid><orcidid>https://orcid.org/0000000185869482</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1434-6044 |
| ispartof | The European physical journal. C, Particles and fields, 2020-11, Vol.80 (11), Article 1053 |
| issn | 1434-6044 1434-6052 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1714391 |
| source | SpringerOpen; SpringerLink; Directory of Open Access Journals; EZB Electronic Journals Library |
| subjects | Astronomy Astrophysics and Cosmology Charm (particle physics) Elementary Particles Hadrons Heavy Ions Measurement Science and Instrumentation Multipoles Nuclear Energy Nuclear Physics NUCLEAR PHYSICS AND RADIATION PHYSICS Nucleons Photoproduction Physics Physics and Astronomy Protons Quantum chromodynamics Quantum Field Theories Quantum Field Theory Regular Article – Theoretical Physics String Theory Vector mesons |
| title | Deciphering the mechanism of near-threshold J/ψ photoproduction |
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