First lattice QCD study of the gluonic structure of light nuclei
The role of gluons in the structure of the nucleon and light nuclei is investigated using lattice quantum chromodynamics (QCD) calculations. The first moment of the unpolarised gluon distribution is studied in nuclei up to atomic number \(A=3\) at quark masses corresponding to pion masses of \(m_\pi...
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| creator | Winter, Frank Detmold, William Gambhir, Arjun S Orginos, Kostas Savage, Martin J Shanahan, Phiala E Wagman, Michael L |
| description | The role of gluons in the structure of the nucleon and light nuclei is investigated using lattice quantum chromodynamics (QCD) calculations. The first moment of the unpolarised gluon distribution is studied in nuclei up to atomic number \(A=3\) at quark masses corresponding to pion masses of \(m_\pi\sim 450\) and \(806\) MeV. Nuclear modification of this quantity defines a gluonic analogue of the EMC effect and is constrained to be less than \(\sim 10\)% in these nuclei. This is consistent with expectations from phenomenological quark distributions and the momentum sum rule. In the deuteron, the combination of gluon distributions corresponding to the \(b_1\) structure function is found to have a small first moment compared with the corresponding momentum fraction. The first moment of the gluon transversity structure function is also investigated in the spin-1 deuteron, where a non-zero signal is observed at \(m_\pi \sim 806\) MeV. This is the first indication of gluon contributions to nuclear structure that can not be associated with an individual nucleon. |
| doi_str_mv | 10.48550/arxiv.1709.00395 |
| format | Article |
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The first moment of the unpolarised gluon distribution is studied in nuclei up to atomic number \(A=3\) at quark masses corresponding to pion masses of \(m_\pi\sim 450\) and \(806\) MeV. Nuclear modification of this quantity defines a gluonic analogue of the EMC effect and is constrained to be less than \(\sim 10\)% in these nuclei. This is consistent with expectations from phenomenological quark distributions and the momentum sum rule. In the deuteron, the combination of gluon distributions corresponding to the \(b_1\) structure function is found to have a small first moment compared with the corresponding momentum fraction. The first moment of the gluon transversity structure function is also investigated in the spin-1 deuteron, where a non-zero signal is observed at \(m_\pi \sim 806\) MeV. 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This is the first indication of gluon contributions to nuclear structure that can not be associated with an individual nucleon.</description><subject>Atomic properties</subject><subject>Gluons</subject><subject>Momentum</subject><subject>Nuclear structure</subject><subject>Nuclei (nuclear physics)</subject><subject>Physics - High Energy Physics - Lattice</subject><subject>Physics - High Energy Physics - Phenomenology</subject><subject>Quantum chromodynamics</subject><subject>Quarks</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj11LwzAUhoMgOOZ-gFcGvG5N83XaO6W6KQxE2H1J87Fl1Hamibh_b7cJLxx4z8PhPAjdFSTnpRDkUYVf_5MXQKqcEFaJKzSjjBVZySm9QYtx3BNCqAQqBJuhp6UPY8SditFriz_rFzzGZI54cDjuLN52aei9nsqQdEzBnhad3-4i7pPurL9F1051o138zznaLF839Vu2_li918_rTAnKMydEq2VRATdgBG0dCOCtqoxkCggB1pZSTJHUMOe4ahkYaqiUqgLgTrM5ur-cPes1h-C_VDg2J83mrDkRDxfiEIbvZMfY7IcU-umnhhKQsuQl4-wPe25UEw</recordid><startdate>20171129</startdate><enddate>20171129</enddate><creator>Winter, Frank</creator><creator>Detmold, William</creator><creator>Gambhir, Arjun S</creator><creator>Orginos, Kostas</creator><creator>Savage, Martin J</creator><creator>Shanahan, Phiala E</creator><creator>Wagman, Michael L</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20171129</creationdate><title>First lattice QCD study of the gluonic structure of light nuclei</title><author>Winter, Frank ; Detmold, William ; Gambhir, Arjun S ; Orginos, Kostas ; Savage, Martin J ; Shanahan, Phiala E ; Wagman, Michael L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a524-f55bc61974d7d52bf7574ba9d63a70073b86586562d3ff4ab37d2d266a9774fc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Atomic properties</topic><topic>Gluons</topic><topic>Momentum</topic><topic>Nuclear structure</topic><topic>Nuclei (nuclear physics)</topic><topic>Physics - High Energy Physics - Lattice</topic><topic>Physics - High Energy Physics - Phenomenology</topic><topic>Quantum chromodynamics</topic><topic>Quarks</topic><toplevel>online_resources</toplevel><creatorcontrib>Winter, Frank</creatorcontrib><creatorcontrib>Detmold, William</creatorcontrib><creatorcontrib>Gambhir, Arjun S</creatorcontrib><creatorcontrib>Orginos, Kostas</creatorcontrib><creatorcontrib>Savage, Martin J</creatorcontrib><creatorcontrib>Shanahan, Phiala E</creatorcontrib><creatorcontrib>Wagman, Michael L</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>SciTech Premium Collection (Proquest) (PQ_SDU_P3)</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Engineering Database</collection><collection>Publicly Available Content (ProQuest)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Winter, Frank</au><au>Detmold, William</au><au>Gambhir, Arjun S</au><au>Orginos, Kostas</au><au>Savage, Martin J</au><au>Shanahan, Phiala E</au><au>Wagman, Michael L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>First lattice QCD study of the gluonic structure of light nuclei</atitle><jtitle>arXiv.org</jtitle><date>2017-11-29</date><risdate>2017</risdate><eissn>2331-8422</eissn><abstract>The role of gluons in the structure of the nucleon and light nuclei is investigated using lattice quantum chromodynamics (QCD) calculations. The first moment of the unpolarised gluon distribution is studied in nuclei up to atomic number \(A=3\) at quark masses corresponding to pion masses of \(m_\pi\sim 450\) and \(806\) MeV. Nuclear modification of this quantity defines a gluonic analogue of the EMC effect and is constrained to be less than \(\sim 10\)% in these nuclei. This is consistent with expectations from phenomenological quark distributions and the momentum sum rule. In the deuteron, the combination of gluon distributions corresponding to the \(b_1\) structure function is found to have a small first moment compared with the corresponding momentum fraction. The first moment of the gluon transversity structure function is also investigated in the spin-1 deuteron, where a non-zero signal is observed at \(m_\pi \sim 806\) MeV. 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| subjects | Atomic properties Gluons Momentum Nuclear structure Nuclei (nuclear physics) Physics - High Energy Physics - Lattice Physics - High Energy Physics - Phenomenology Quantum chromodynamics Quarks |
| title | First lattice QCD study of the gluonic structure of light nuclei |
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