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arxiv: 1906.11800 · v1 · pith:UT2CXBERnew · submitted 2019-06-27 · ✦ hep-ph

High-energy effects in forward inclusive dijet and hadron-jet production

Andr\`ee Dafne Bolognino , Francesco Giovanni Celiberto , Dmitry Yu. Ivanov , Mohammed M.A. Mohammed , Alessandro Papa This is my paper

Pith reviewed 2026-05-25 14:36 UTC · model grok-4.3

classification ✦ hep-ph
keywords BFKL resummationDGLAP evolutionforward hadron-jet productionCMS acceptanceCASTOR calorimeterhigh-energy QCDinclusive cross sections
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The pith

New predictions for forward hadron-jet production at CMS and CASTOR can isolate the region where BFKL high-energy resummation applies and separate it from DGLAP fixed-order effects.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper supplies predictions for forward inclusive hadron-jet production that are matched to the kinematic acceptances of the CMS and CASTOR detectors. These predictions are constructed to mark the kinematic window in which the BFKL high-energy resummation becomes relevant and to separate its contributions from those obtained in a DGLAP fixed-order framework. A reader would care because the ability to isolate BFKL effects would clarify when large energy logarithms control particle production in the forward direction at hadron colliders. The work therefore focuses on concrete, detector-specific observables that can be compared directly with existing or upcoming data.

Core claim

The authors give new predictions for forward inclusive hadron-jet production tailored on the CMS and CASTOR acceptances in order to single out the validity region of the BFKL approach and to disentangle BFKL effects from those coming from a DGLAP-inspired, fixed-order description.

What carries the argument

The BFKL high-energy resummation method, which sums large logarithms of the collision energy, applied to forward hadron-jet observables and contrasted with DGLAP fixed-order calculations.

If this is right

  • The predictions identify a concrete kinematic window in which BFKL resummation can be tested against data.
  • Disentanglement of BFKL from DGLAP becomes feasible through direct comparison in the chosen forward channels.
  • The same tailoring procedure can be repeated for other forward processes listed in the title such as dijet production.
  • Data collected in these acceptances can delineate the boundary between high-energy resummation and fixed-order regimes.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • If the BFKL region is successfully isolated, the same logic could guide searches for high-energy logarithms in other forward observables at the LHC.
  • The detector-specific predictions may serve as input for refining Monte Carlo tools that incorporate both resummation schemes.
  • Validation of the BFKL window here would motivate analogous studies at higher collider energies where the separation is expected to widen.

Load-bearing premise

That BFKL resummation effects remain distinguishable from DGLAP fixed-order results inside the forward kinematic region covered by the CMS and CASTOR acceptances.

What would settle it

A set of measured cross sections for forward hadron-jet production inside the CMS and CASTOR acceptances that agree with DGLAP fixed-order results and show no additional enhancement attributable to BFKL resummation.

Figures

Figures reproduced from arXiv: 1906.11800 by Alessandro Papa, Andr\`ee Dafne Bolognino, Dmitry Yu. Ivanov, Francesco Giovanni Celiberto, Mohammed M.A. Mohammed.

Figure 1
Figure 1. Figure 1: C0 in different inclusive NLA BFKL reactions, for √ s = 7, 13 TeV in the CMS-jet configuration. 1. CMS-jet detection [45]: both the hadron and the jet emitted inside the typical acceptances of the CMS detector: 5 GeV < κH < 21.5 GeV, 35 GeV < κJ < 60 GeV, |yH| ≤ 2.4, |yH| ≤ 4.7; 2. CASTOR-jet [46] detection: a hadron always tagged inside CMS, together with a very back￾ward jet detected by CASTOR in the ran… view at source ↗
Figure 2
Figure 2. Figure 2: Y-dependence of R10, R20, R30 and R21 in the two considered configurations, for √ s = 13 TeV. 3 [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗
read the original abstract

Pursuing the goal to single out the validity region of the high-energy resummation, better known as BFKL approach, and to possibly disentangle BFKL effects from the ones coming from a DGLAP-inspired, fixed-order description, new predictions for the forward inclusive hadron-jet production, tailored on the CMS and CASTOR acceptances, are given.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

1 major / 1 minor

Summary. The manuscript provides predictions for forward inclusive dijet and hadron-jet production using BFKL high-energy resummation, tailored to CMS and CASTOR acceptances, with the goal of identifying the BFKL validity region and distinguishing BFKL effects from DGLAP fixed-order contributions.

Significance. If the central claim holds, the work would supply useful phenomenological benchmarks for testing high-energy QCD resummation against fixed-order approaches in forward kinematics at the LHC.

major comments (1)
  1. [Results section on hadron-jet production] Results section on hadron-jet production: the BFKL and DGLAP curves are shown for CMS/CASTOR kinematics, but no binned quantitative comparison is reported of the size of their differences relative to the combined theoretical uncertainty bands (scale variations, PDFs, etc.), leaving the distinguishability assertion untested.
minor comments (1)
  1. [Abstract] The abstract states the goal but supplies no indication of the size of the predicted effects or the kinematic windows examined.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for the constructive comment. We respond to the major comment below.

read point-by-point responses

  1. Referee: [Results section on hadron-jet production] Results section on hadron-jet production: the BFKL and DGLAP curves are shown for CMS/CASTOR kinematics, but no binned quantitative comparison is reported of the size of their differences relative to the combined theoretical uncertainty bands (scale variations, PDFs, etc.), leaving the distinguishability assertion untested.

    Authors: We agree that a binned quantitative comparison of the differences between BFKL and DGLAP predictions, set against the combined theoretical uncertainties (scale variations and PDFs), would provide a clearer test of distinguishability. While the existing figures permit visual assessment, we will add such a quantitative analysis (e.g., relative differences per bin compared to uncertainty bands) to the revised manuscript to strengthen the presentation. revision: yes

Circularity Check

0 steps flagged

No circularity: BFKL predictions are independent theoretical calculations

full rationale

The paper computes forward hadron-jet cross sections via standard BFKL resummation (with DGLAP comparisons) applied to CMS/CASTOR kinematics. No step reduces a claimed prediction to a fit on the same data, a self-citation chain, or a definitional tautology; the outputs are generated from the resummation formalism and parton distributions without the target observables entering the derivation as inputs. The distinguishability claim is an untested assertion about numerical size, not a circular reduction.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract supplies no information on free parameters, axioms, or invented entities; all arrays are therefore empty.

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discussion (0)

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Forward citations

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