{"id":"https://openalex.org/W7203697561","doi":"https://doi.org/10.48550/arxiv.2608.15944","title":"Photon Fragmentation Functions in LHAPDF: Existing Sets and a Pythia-Based Extraction","display_name":"Photon Fragmentation Functions in LHAPDF: Existing Sets and a Pythia-Based Extraction","publication_year":2026,"publication_date":"2026-08-16","ids":{"openalex":"https://openalex.org/W7203697561","doi":"https://doi.org/10.48550/arxiv.2608.15944"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2608.15944","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.15944","pdf_url":"https://arxiv.org/pdf/2608.15944","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2608.15944","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5040954608","display_name":"Alexander Puck Neuwirth","orcid":"https://orcid.org/0000-0002-2484-1328","observed_orcids":["https://orcid.org/0000-0002-2484-1328"]},"institutions":[{"id":"https://openalex.org/I4210140564","display_name":"Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca","ror":"https://ror.org/03xejxm22","country_code":"IT","type":"facility","lineage":["https://openalex.org/I160013858","https://openalex.org/I4210140564"]},{"id":"https://openalex.org/I66752286","display_name":"University of Milano-Bicocca","ror":"https://ror.org/01ynf4891","country_code":"IT","type":"education","lineage":["https://openalex.org/I66752286"]}],"countries":["IT"],"is_corresponding":true,"raw_author_name":"Neuwirth, Alexander Puck","raw_affiliation_strings":["Dipartimento di Fisica \"Giuseppe Occhialini\" , Universit\u00e0 degli Studi di Milano-Bicocca , Piazza della Scienza 3 , Milano , 20126 , Lombardy , Italy","Sezione di Milano-Bicocca , INFN , Piazza della Scienza 3 , Milano , 20126 , Lombardy , Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dipartimento di Fisica \"Giuseppe Occhialini\" , Universit\u00e0 degli Studi di Milano-Bicocca , Piazza della Scienza 3 , Milano , 20126 , Lombardy , Italy","institution_ids":["https://openalex.org/I66752286"]},{"raw_affiliation_string":"Sezione di Milano-Bicocca , INFN , Piazza della Scienza 3 , Milano , 20126 , Lombardy , Italy","institution_ids":["https://openalex.org/I4210140564"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5040954608"],"corresponding_institution_ids":["https://openalex.org/I4210140564","https://openalex.org/I66752286"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10048","display_name":"Particle physics theoretical and experimental studies","score":0.9136000275611877,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10048","display_name":"Particle physics theoretical and experimental studies","score":0.9136000275611877,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10224","display_name":"Quantum Chromodynamics and Particle Interactions","score":0.06790000200271606,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10527","display_name":"High-Energy Particle Collisions Research","score":0.010700000450015068,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/prompt-photons","display_name":"prompt photons","score":0.6439999938011169},{"id":"https://openalex.org/keywords/perturbative-qcd","display_name":"perturbative QCD","score":0.7879999876022339}],"concepts":[{"id":"https://openalex.org/C191015642","wikidata":"https://www.wikidata.org/wiki/Q1132459","display_name":"Fragmentation (computing)","level":2,"score":0.7242000102996826},{"id":"https://openalex.org/C2775885684","wikidata":"https://www.wikidata.org/wiki/Q25099950","display_name":"Fragmentation function","level":4,"score":0.6959999799728394},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5990999937057495},{"id":"https://openalex.org/C159317903","wikidata":"https://www.wikidata.org/wiki/Q3198","display_name":"Photon","level":2,"score":0.5741999745368958},{"id":"https://openalex.org/C155512373","wikidata":"https://www.wikidata.org/wiki/Q287450","display_name":"Residual","level":2,"score":0.47269999980926514},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.3862000107765198},{"id":"https://openalex.org/C109214941","wikidata":"https://www.wikidata.org/wiki/Q18334","display_name":"Particle physics","level":1,"score":0.3596000075340271},{"id":"https://openalex.org/C123579102","wikidata":"https://www.wikidata.org/wiki/Q3299","display_name":"Gluon","level":3,"score":0.3513000011444092},{"id":"https://openalex.org/C191486275","wikidata":"https://www.wikidata.org/wiki/Q210028","display_name":"Scattering","level":2,"score":0.2957000136375427},{"id":"https://openalex.org/C185544564","wikidata":"https://www.wikidata.org/wiki/Q81197","display_name":"Nuclear physics","level":1,"score":0.2939999997615814},{"id":"https://openalex.org/C117137515","wikidata":"https://www.wikidata.org/wiki/Q238170","display_name":"Quantum chromodynamics","level":2,"score":0.2865999937057495},{"id":"https://openalex.org/C137800194","wikidata":"https://www.wikidata.org/wiki/Q11713455","display_name":"Interpolation (computer graphics)","level":3,"score":0.2865999937057495},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.2766999900341034},{"id":"https://openalex.org/C7602139","wikidata":"https://www.wikidata.org/wiki/Q6718","display_name":"Quark","level":2,"score":0.2745000123977661},{"id":"https://openalex.org/C171836373","wikidata":"https://www.wikidata.org/wiki/Q2266329","display_name":"Linear interpolation","level":3,"score":0.2732999920845032},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.25760000944137573}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2608.15944","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.15944","pdf_url":"https://arxiv.org/pdf/2608.15944","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2608.15944","doi":"https://doi.org/10.48550/arxiv.2608.15944","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2608.15944","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2608.15944","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.15944","pdf_url":"https://arxiv.org/pdf/2608.15944","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G2760725075","display_name":null,"funder_award_id":"INST 211/667-1","funder_id":"https://openalex.org/F4320322957","funder_display_name":"Westf\u00e4lische Wilhelms-Universit\u00e4t M\u00fcnster"},{"id":"https://openalex.org/G4955048828","display_name":null,"funder_award_id":"INST 211/667\u20101","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"},{"id":"https://openalex.org/G6813585582","display_name":null,"funder_award_id":"211/667-1","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"}],"funders":[{"id":"https://openalex.org/F4320320879","display_name":"Deutsche Forschungsgemeinschaft","ror":"https://ror.org/018mejw64"},{"id":"https://openalex.org/F4320322957","display_name":"Westf\u00e4lische Wilhelms-Universit\u00e4t M\u00fcnster","ror":"https://ror.org/00pd74e08"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7203697561.pdf","grobid_xml":"https://content.openalex.org/works/W7203697561.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W3174773716","https://openalex.org/W2964231974","https://openalex.org/W6981793820","https://openalex.org/W2008021505","https://openalex.org/W2115115122","https://openalex.org/W2951494256","https://openalex.org/W2158918637","https://openalex.org/W1968534387","https://openalex.org/W2399917431","https://openalex.org/W2011534133"],"abstract_inverted_index":{"Prompt-photon":[0],"predictions":[1],"with":[2,92],"experimentally":[3],"relevant":[4],"isolation":[5],"criteria":[6],"retain":[7],"a":[8,24,147,162],"residual":[9],"dependence":[10],"on":[11,153],"parton-to-photon":[12],"fragmentation":[13,29,48,71,90,131,176],"functions,":[14],"whose":[15],"phenomenological":[16,167],"uncertainties":[17],"remain":[18],"only":[19],"weakly":[20],"constrained.":[21],"We":[22,41,113,144],"present":[23],"pragmatic":[25],"study":[26,110],"of":[27,46,57,64,128,174],"photon":[28,47,66,175],"functions":[30,60,63,132],"extracted":[31,75],"from":[32],"Pythia":[33],"parton-shower":[34],"events":[35],"and":[36,52,70,84,87,103,109,126,156,169],"stored":[37],"in":[38,49,120,141],"LHAPDF":[39,107,121],"grids.":[40],"briefly":[42],"review":[43],"the":[44,58,65,78,98,116,123,129,136,154],"role":[45],"perturbative":[50],"QCD":[51],"then":[53],"construct":[54],"shower-level":[55],"estimates":[56],"flavour-dependent":[59],"$D^{\\mathrm{PS}}_{\u03b3/i}(z,\u03bc_D)$":[61],"as":[62],"momentum":[67],"fraction":[68],"$z$":[69],"scale":[72],"$\u03bc_D$.":[73],"The":[74],"distributions":[76],"show":[77],"expected":[79],"qualitative":[80],"hierarchy":[81],"between":[82],"quark":[83],"gluon":[85],"channels":[86],"an":[88],"increasing":[89],"contribution":[91],"scale.":[93],"In":[94],"parallel,":[95],"we":[96],"convert":[97],"commonly":[99,139],"used":[100,140],"BFG,":[101],"GRV,":[102],"GDRG":[104],"parameterizations":[105],"into":[106],"grids":[108],"their":[111],"interpolation.":[112],"find":[114],"that":[115],"default":[117],"logcubic":[118],"interpolation":[119,138],"reproduces":[122],"non-trivial":[124],"$z$-":[125],"scale-dependence":[127],"tabulated":[130],"more":[133,171],"faithfully":[134],"than":[135],"linear":[137],"legacy":[142],"implementations.":[143],"also":[145],"define":[146],"simple":[148],"collider-oriented":[149],"envelope":[150],"set,":[151],"based":[152],"BFG":[155],"GRV":[157],"families.":[158],"These":[159],"results":[160],"provide":[161],"portable":[163],"baseline":[164],"for":[165,170],"future":[166],"studies":[168],"systematic":[172],"extractions":[173],"functions.":[177]},"counts_by_year":[],"updated_date":"2026-10-28T10:33:24.094632","created_date":"2026-08-19T00:00:00"}
