{"paper":{"title":"Forward hadron production in pp collisions at LHC energies from an event generator based on the color glass condensate framework","license":"http://creativecommons.org/licenses/by/4.0/","headline":"LHCb data favor HERA-constrained McLerran-Venugopalan variants over the original model for forward hadron production at LHC energies.","cross_cats":["nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Hirotsugu Fujii, Kazunori Itakura, Shujun Zhao, Tetsufumi Hirano, Yasushi Nara","submitted_at":"2026-05-15T00:19:14Z","abstract_excerpt":"We investigate inclusive forward single-hadron production in high-energy proton--proton collisions using a CGC-inspired Monte Carlo event generator, MC-CGC. We carried out a systematic study of the sensitivity of the running-coupling Balitsky-Kovchegov (rcBK) evolution equation to its initial conditions by comparing three parameterizations: the McLerran-Venugopalan (MV) model and its two HERA DIS-constrained variants, MV$^\\gamma$ and MV$^e$. Our results indicate that the current LHCb data favor the MV$^\\gamma$ and MV$^e$ models, while the differences from the original MV model become more pron"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Our results indicate that the current LHCb data favor the MV^γ and MV^e models, while the differences from the original MV model become more pronounced at higher transverse momentum and at mid-rapidity. We found that the kT factorization framework provides a better description of the particle production spectra at mid-rapidity than the DHJ framework.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the Monte Carlo implementation of the rcBK evolution with the chosen initial conditions and the selected factorization schemes fully captures the dominant physics of forward hadron production in pp collisions at LHC energies, without large contributions from unmodeled higher-order corrections or non-CGC mechanisms.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"MC-CGC simulations with rcBK evolution favor HERA-tuned MV^γ and MV^e initial conditions for LHCb forward hadron data, show kT factorization outperforming DHJ at mid-rapidity, and provide predictions for ALICE FoCal neutral mesons and jets.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"LHCb data favor HERA-constrained McLerran-Venugopalan variants over the original model for forward hadron production at LHC energies.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"e12da59ecdb9378c25344ed6fbc8ce635fb717f074228403c0183bcc514b743b"},"source":{"id":"2605.15494","kind":"arxiv","version":1},"verdict":{"id":"7d29842d-3a58-42f7-8286-8ce41bdaba81","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T16:02:54.363089Z","strongest_claim":"Our results indicate that the current LHCb data favor the MV^γ and MV^e models, while the differences from the original MV model become more pronounced at higher transverse momentum and at mid-rapidity. We found that the kT factorization framework provides a better description of the particle production spectra at mid-rapidity than the DHJ framework.","one_line_summary":"MC-CGC simulations with rcBK evolution favor HERA-tuned MV^γ and MV^e initial conditions for LHCb forward hadron data, show kT factorization outperforming DHJ at mid-rapidity, and provide predictions for ALICE FoCal neutral mesons and jets.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the Monte Carlo implementation of the rcBK evolution with the chosen initial conditions and the selected factorization schemes fully captures the dominant physics of forward hadron production in pp collisions at LHC energies, without large contributions from unmodeled higher-order corrections or non-CGC mechanisms.","pith_extraction_headline":"LHCb data favor HERA-constrained McLerran-Venugopalan variants over the original model for forward hadron production at LHC energies."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.15494/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T16:31:18.213071Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T16:15:40.544586Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"cited_work_retraction","ran_at":"2026-05-19T14:51:56.704105Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T14:21:54.069163Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"citation_quote_validity","ran_at":"2026-05-19T13:49:41.398028Z","status":"skipped","version":"0.1.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T13:33:22.646210Z","status":"skipped","version":"1.0.0","findings_count":0}],"snapshot_sha256":"8fcac7c60e198d58632fd123d6900a456d9aa3a0d9eaa13aae202b35f9531bea"},"references":{"count":82,"sample":[{"doi":"","year":null,"title":"We will also investigate observables that were not discussed in the previous work","work_id":"ca349c8f-7429-4559-8eed-56735fc34f34","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Figure 4 presents the pseudo-rapidity (𝜂) and the transverse momentum (𝑝 𝑇) distribution of charged particles, d𝑁ch/d𝜂and d𝑁 ch/d𝑝 𝑇 in pp collisions at √𝑠=7 TeV","work_id":"3d0273b3-034f-4ff0-bdd0-6d72d8e09e4b","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"7 presents the𝑝 𝑇 spectra at RHIC collision energy of √𝑠=200 GeV (left panel) and at the mid-rapidity region at the LHC energy of √𝑠=13 TeV (right panel)","work_id":"c9754fef-a753-4213-86c6-f03858215126","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"ch P(N DHJ, MV, K=1.0 , K=2.0 eDHJ, MV, K=1.4 γ DHJ, MV>0.2 GeV T LHCb pp 7TeV, p8 10×<2.5, η2.0<6 10×<3.0, η2.5<4 10×<3.5, η3.0<2 10×<4.0, η3.5<0 10×<4.5, η4.0< 2 4 6 8 10 12 14 16 18 20 22 ch N6 −10","work_id":"3120a366-f654-4bac-b4b7-1e24bb110245","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"5: Charged particle multiplicity distribution𝑃(𝑁 ch)within different𝜂(left) and𝑝 𝑇 (right) bins in pp collisions at√𝑠=7 TeV","work_id":"ec341305-66d0-473d-bff4-42027ab7a757","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":82,"snapshot_sha256":"e23b7ddb704a1cece3f581498f908e8e745666a4d5104c5b7eee090dd39f1177","internal_anchors":51},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}