pith. sign in

arxiv: 2606.22762 · v1 · pith:6U6NCCJCnew · submitted 2026-06-22 · ✦ hep-ex

Measurement of Born cross sections for e^+e^-to pbar p at sqrt{s} =3.510-4.946 GeV

BESIII Collaboration: M. Ablikim , M. N. Achasov , P. Adlarson , X. C. Ai , C. S. Akondi , R. Aliberti , A. Amoroso , Q. An
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Y. H. An Y. Bai O. Bakina H.-R. Bao X. L. Bao M. Barbagiovanni V. Batozskaya K. Begzsuren N. Berger M. Berlowski M. B. Bertani D. Bettoni F. Bianchi E. Bianco A. Bortone I. Boyko R. A. Briere A. Brueggemann D. Cabiati H. Cai M. H. Cai X. Cai A. Calcaterra G. F. Cao N. Cao S. A. Cetin X. Y. Chai J. F. Chang T. T. Chang G. R. Che Y. Z. Che C. H. Chen Chao Chen G. Chen H. S. Chen H. Y. Chen M. L. Chen S. J. Chen S. M. Chen T. Chen W. Chen X. R. Chen X. T. Chen X. Y. Chen Y. B. Chen Y. Q. Chen Z. K. Chen J. Cheng L. N. Cheng S. K. Choi X. Chu G. Cibinetto F. Cossio J. Cottee-Meldrum H. L. Dai J. P. Dai X. C. Dai A. Dbeyssi R. E. de Boer D. Dedovich C. Q. Deng Z. Y. Deng A. Denig I. Denisenko M. Destefanis F. De Mori E. Di Fiore X. X. Ding Y. Ding Y. X. Ding Yi. Ding J. Dong L. Y. Dong M. Y. Dong X. Dong M. C. Du S. X. Du Shaoxu Du X. L. Du Y. Q. Du Y. Y. Duan Z. H. Duan P. Egorov G. F. Fan J. J. Fan Y. H. Fan J. Fang Jin Fang S. S. Fang W. X. Fang Y. Q. Fang L. Fava F. Feldbauer G. Felici C. Q. Feng J. H. Feng L. Feng Q. X. Feng Y. T. Feng M. Fritsch C. D. Fu J. L. Fu Y. W. Fu H. Gao Y. Gao Y. N. Gao Y. Y. Gao Yunong Gao Z. Gao S. Garbolino I. Garzia L. Ge P. T. Ge Z. W. Ge C. Geng E. M. Gersabeck A. Gilman K. Goetzen J. Gollub J. B. Gong J. D. Gong L. Gong W. X. Gong W. Gradl S. Gramigna M. Greco M. D. Gu M. H. Gu C. Y. Guan A. Q. Guo H. Guo J. N. Guo L. B. Guo M. J. Guo R. P. Guo X. Guo Y. P. Guo Z. Guo A. Guskov J. Gutierrez J. Y. Han T. T. Han X. Han F. Hanisch K. D. Hao X. Q. Hao F. A. Harris C. Z. He K. K. He K. L. He F. H. Heinsius C. H. Heinz Y. K. Heng C. Herold P. C. Hong G. Y. Hou X. T. Hou Y. R. Hou Z. L. Hou H. M. Hu J. F. Hu Q. P. Hu S. L. Hu T. Hu Y. Hu Y. X. Hu Z. M. Hu G. S. Huang K. X. Huang L. Q. Huang P. Huang X. T. Huang Y. P. Huang Y. S. Huang T. Hussain N. H\"usken N. in der Wiesche J. Jackson Q. Ji Q. P. Ji W. Ji X. B. Ji X. L. Ji Y. Y. Ji L. K. Jia X. Q. Jia D. Jiang H. B. Jiang S. J. Jiang X. S. Jiang Y. Jiang J. B. Jiao J. K. Jiao Z. Jiao L. C. L. Jin S. Jin Y. Jin M. Q. Jing X. M. Jing T. Johansson S. Kabana X. L. Kang X. S. Kang B. C. Ke V. Khachatryan A. Khoukaz O. B. Kolcu B. Kopf L. Kr\"oger L. Kr\"ummel Y. Y. Kuang M. Kuessner X. Kui N. Kumar A. Kupsc W. K\"uhn Q. Lan W. N. Lan T. T. Lei M. Lellmann T. Lenz C. Li C. H. Li C. K. Li Chunkai Li Cong Li D. M. Li F. Li G. Li H. B. Li H. J. Li H. L. Li H. N. Li H. P. Li Hui Li J. N. Li J. S. Li J. W. Li K. Li K. L. Li L. J. Li Lei Li M. H. Li M. R. Li M. T. Li P. L. Li P. R. Li Q. M. Li Q. X. Li R. Li S. Li S. X. Li S. Y. Li Shanshan Li T. Li T. Y. Li W. D. Li W. G. Li X. Li X. H. Li X. K. Li X. L. Li X. Y. Li X. Z. Li Y. Li Y. G. Li Y. P. Li Z. H. Li Z. J. Li Z. L. Li Z. X. Li Z. Y. Li C. Liang H. Liang Y. F. Liang Y. T. Liang G. R. Liao L. B. Liao M. H. Liao Y. P. Liao J. Libby A. Limphirat C. C. Lin C. X. Lin D. X. Lin T. Lin B. J. Liu B. X. Liu C. Liu C. X. Liu F. Liu F. H. Liu Feng Liu G. M. Liu H. Liu H. B. Liu H. M. Liu Huihui Liu J. B. Liu J. J. Liu K. Liu K. Y. Liu Ke Liu Kun Liu L. Liu L. C. Liu Lu Liu M. H. Liu P. L. Liu Q. Liu S. B. Liu T. Liu W. M. Liu W. T. Liu X. Liu X. K. Liu X. L. Liu X. P. Liu X. Y. Liu Y. Liu Y. B. Liu Yi Liu Z. A. Liu Z. D. Liu Z. L. Liu Z. Q. Liu Z. X. Liu Z. Y. Liu X. C. Lou H. J. Lu J. G. Lu X. L. Lu Y. Lu Y. H. Lu Y. P. Lu Z. H. Lu C. L. Luo J. R. Luo J. S. Luo M. X. Luo T. Luo X. L. Luo Z. Y. Lv X. R. Lyu Y. F. Lyu Y. H. Lyu F. C. Ma H. L. Ma Heng Ma J. L. Ma L. L. Ma L. R. Ma Q. M. Ma R. Q. Ma R. Y. Ma T. Ma X. T. Ma X. Y. Ma Y. M. Ma F. E. Maas I. MacKay M. Maggiora S. Maity S. Malde Q. A. Malik H. X. Mao Y. J. Mao Z. P. Mao S. Marcello A. Marshall F. M. Melendi Y. H. Meng Z. X. Meng G. Mezzadri H. Miao T. J. Min R. E. Mitchell X. H. Mo B. Moses N. Yu. Muchnoi J. Muskalla Y. Nefedov F. Nerling H. Neuwirth Z. Ning S. Nisar Q. L. Niu W. D. Niu Y. Niu C. Normand S. L. Olsen Q. Ouyang S. Pacetti X. Pan Y. Pan A. Pathak Y. P. Pei M. Pelizaeus G. L. Peng H. P. Peng X. J. Peng Y. Y. Peng K. Peters K. Petridis J. L. Ping R. G. Ping S. Plura V. Prasad L. P\"opping F. Z. Qi H. R. Qi M. Qi S. Qian W. B. Qian C. F. Qiao J. H. Qiao J. J. Qin J. L. Qin L. Q. Qin L. Y. Qin P. B. Qin X. P. Qin X. S. Qin Z. H. Qin J. F. Qiu Z. H. Qu J. Rademacker C. F. Redmer A. Rivetti M. Rolo G. Rong S. S. Rong F. Rosini Ch. Rosner M. Q. Ruan N. Salone A. Sarantsev Y. Schelhaas M. Schernau K. Schoenning M. Scodeggio W. Shan X. Y. Shan Z. J. Shang J. F. Shangguan L. G. Shao M. Shao C. P. Shen H. F. Shen W. H. Shen X. Y. Shen B. A. Shi Ch. Y. Shi H. Shi J. L. Shi J. Y. Shi M. H. Shi S. Y. Shi X. Shi H. L. Song J. J. Song M. H. Song T. Z. Song W. M. Song Y. X. Song Zirong Song S. Sosio S. Spataro S. Stansilaus F. Stieler M. Stolte S. S Su G. B. Sun G. X. Sun H. Sun H. K. Sun J. F. Sun K. Sun L. Sun R. Sun S. S. Sun T. Sun W. Y. Sun Y. C. Sun Y. H. Sun Y. J. Sun Y. Z. Sun Z. Q. Sun Z. T. Sun H. Tabaharizato C. J. Tang G. Y. Tang J. Tang J. J. Tang L. F. Tang Y. A. Tang Z. H. Tang L. Y. Tao M. Tat J. X. Teng J. Y. Tian W. H. Tian Y. Tian Z. F. Tian I. Uman E. van der Smagt B. Wang Bin Wang Bo Wang C. Wang Chao Wang Cong Wang D. Y. Wang H. J. Wang H. R. Wang J. Wang J. J. Wang J. P. Wang K. Wang L. L. Wang L. W. Wang M. Wang Mi Wang N. Y. Wang S. Wang Shun Wang T. Wang T. J. Wang W. Wang W. P. Wang X. F. Wang X. L. Wang X. N. Wang Xin Wang Y. Wang Y. D. Wang Y. F. Wang Y. H. Wang Y. J. Wang Y. L. Wang Y. N. Wang Yanning Wang Yaqian Wang Yi Wang Yuan Wang Z. Wang Z. L. Wang Z. Q. Wang Z. Y. Wang Zhi Wang Ziyi Wang D. Wei D. H. Wei D. J. Wei H. R. Wei F. Weidner H. R. Wen S. P. Wen U. Wiedner G. Wilkinson M. Wolke J. F. Wu L. H. Wu L. J. Wu Lianjie Wu S. G. Wu S. M. Wu X. W. Wu Z. Wu H. L. Xia L. Xia B. H. Xiang D. Xiao G. Y. Xiao H. Xiao Y. L. Xiao Z. J. Xiao C. Xie K. J. Xie Y. Xie Y. G. Xie Y. H. Xie Z. P. Xie T. Y. Xing D. B. Xiong C. J. Xu G. F. Xu H. Y. Xu Q. J. Xu Q. N. Xu T. D. Xu X. P. Xu Y. Xu Y. C. Xu Z. S. Xu F. Yan L. Yan W. B. Yan W. C. Yan W. H. Yan W. P. Yan X. Q. Yan Y. Y. Yan H. J. Yang H. L. Yang H. X. Yang J. H. Yang R. J. Yang X. Y. Yang Y. Yang Y. H. Yang Y. M. Yang Y. Q. Yang Y. Z. Yang Youhua Yang Z. Y. Yang Z. P. Yao M. Ye M. H. Ye Z. J. Ye Junhao Yin Z. Y. You B. X. Yu C. X. Yu G. Yu J. S. Yu L. W. Yu T. Yu X. D. Yu Y. C. Yu Yongchao Yu C. Z. Yuan H. Yuan J. Yuan Jie Yuan L. Yuan M. K. Yuan S. H. Yuan Y. Yuan C. X. Yue Ying Yue A. A. Zafar F. R. Zeng S. H. Zeng X. Zeng Y. J. Zeng Yujie Zeng Y. C. Zhai Y. H. Zhan B. L. Zhang B. X. Zhang D. H. Zhang G. Y. Zhang Gengyuan Zhang H. Zhang H. C. Zhang H. H. Zhang H. Q. Zhang H. R. Zhang H. Y. Zhang Han Zhang J. Zhang J. J. Zhang J. L. Zhang J. Q. Zhang J. S. Zhang J. W. Zhang J. X. Zhang J. Y. Zhang J. Z. Zhang Jianyu Zhang Jin Zhang Jiyuan Zhang L. M. Zhang Lei Zhang N. Zhang P. Zhang Q. Zhang Q. Y. Zhang Q. Z. Zhang R. Y. Zhang S. H. Zhang S. N. Zhang Shulei Zhang X. M. Zhang X. Y. Zhang Y. Zhang Y. T. Zhang Y. H. Zhang Y. P. Zhang Yu Zhang Z. Zhang Z. D. Zhang Z. H. Zhang Z. L. Zhang Z. X. Zhang Z. Y. Zhang Zh. Zh. Zhang Zhilong Zhang Ziyang Zhang Ziyu Zhang G. Zhao J.-P. Zhao J. Y. Zhao J. Z. Zhao L. Zhao Lei Zhao M. G. Zhao R. P. Zhao S. J. Zhao Y. B. Zhao Y. L. Zhao Y. P. Zhao Y. X. Zhao Z. G. Zhao A. Zhemchugov B. Zheng B. M. Zheng J. P. Zheng W. J. Zheng W. Q. Zheng X. R. Zheng Y. H. Zheng B. Zhong C. Zhong H. Zhou J. Q. Zhou S. Zhou X. Zhou X. K. Zhou X. R. Zhou X. Y. Zhou Y. X. Zhou Y. Z. Zhou A. N. Zhu J. Zhu K. Zhu K. J. Zhu K. S. Zhu L. X. Zhu Lin Zhu S. H. Zhu T. J. Zhu W. D. Zhu W. J. Zhu W. Z. Zhu Y. C. Zhu Z. A. Zhu X. Y. Zhuang M. Zhuge J. H. Zou J. Zu
This is my paper

Pith reviewed 2026-06-26 06:36 UTC · model grok-4.3

classification ✦ hep-ex
keywords Born cross sectionelectromagnetic form factorsprotontimelike regionangular distributione+e- annihilationBESIII
0
0 comments X

The pith

The moduli of the proton electromagnetic form factor ratio |G_E/G_M| and |G_M| are determined with high precision for the first time by analyzing the proton polar angle distribution at large timelike momentum transfers.

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

This paper reports measurements of the Born cross section and effective form factor for e+e- to p pbar at 47 center-of-mass energies from 3.510 to 4.946 GeV using 26 fb^{-1} of BESIII data. It extracts |G_E/G_M| and |G_M| by fitting the distribution of the proton's polar angle after standard corrections. A sympathetic reader would care because these quantities describe the proton's response to electromagnetic probes when enough energy is available to produce particle pairs, supplying data in an energy window above open-charm threshold where resonances can affect the behavior. The work supplies concrete numbers that can be compared directly with models of nucleon structure in the timelike domain.

Core claim

The paper establishes that the Born cross sections and effective form factor can be measured across the scanned energies, and that the proton polar angle distribution permits the first high-precision extraction of the moduli |G_E/G_M| and |G_M| at large timelike momentum transfer, yielding essential information on the dynamics of the proton electromagnetic form factors and the nature of charmonium-like states.

What carries the argument

The polar angle distribution of the produced proton, which separates the electric and magnetic form factor contributions in the timelike region.

If this is right

  • The measured cross sections and form factors supply data for modeling nucleon electromagnetic structure in the timelike region above open-charm threshold.
  • The results provide input for understanding the dynamics of charmonium-like states that may couple to the p pbar final state.
  • The effective form factor is obtained together with the individual moduli, allowing direct comparison with theoretical predictions at large timelike Q^2.
  • The angular analysis technique demonstrates that high-precision separation of G_E and G_M is feasible with existing detector resolution in this energy range.

Where Pith is reading between the lines

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

  • The extracted values can be compared with existing spacelike form factor data to test whether the timelike and spacelike behaviors converge at high momentum transfer.
  • Higher-statistics runs at the same energies could reduce uncertainties on the ratio and test whether it deviates from unity as expected from simple quark models.
  • The measurements set a benchmark for future experiments that scan the same region with different detectors or at higher luminosities.
  • If the ratio remains close to one across the scanned points, it would support models in which the proton's charge and magnetization distributions are similar in the timelike domain.

Load-bearing premise

The observed proton polar angle distribution can be cleanly attributed to the electromagnetic form factors after standard corrections for detector acceptance, efficiency, and backgrounds, with no significant unaccounted contributions from other processes at these energies.

What would settle it

A data set in which the proton angular distribution, after all standard corrections, cannot be described by any combination of G_E and G_M values, or in which unaccounted resonant or background processes are shown to dominate the distribution at these energies.

Figures

Figures reproduced from arXiv: 2606.22762 by A. Amoroso, A. A. Zafar, A. Bortone, A. Brueggemann, A. Calcaterra, A. Dbeyssi, A. Denig, A. Gilman, A. Guskov, A. Khoukaz, A. Kupsc, A. Limphirat, A. Marshall, A. N. Zhu, A. Pathak, A. Q. Guo, A. Rivetti, A. Sarantsev, A. Zhemchugov, B. A. Shi, B. C. Ke, BESIII Collaboration: M. Ablikim, B. H. Xiang, Bin Wang, B. J. Liu, B. Kopf, B. L. Zhang, B. Moses, B. M. Zheng, Bo Wang, B. Wang, B. X. Liu, B. X. Yu, B. X. Zhang, B. Zheng, B. Zhong, C. C. Lin, C. D. Fu, C. F. Qiao, C. F. Redmer, C. Geng, Chao Chen, Chao Wang, C. H. Chen, C. Herold, C. H. Heinz, C. H. Li, Ch. Rosner, Chunkai Li, Ch. Y. Shi, C. J. Tang, C. J. Xu, C. K. Li, C. Li, C. Liang, C. Liu, C. L. Luo, C. Normand, Cong Li, Cong Wang, C. P. Shen, C. Q. Deng, C. Q. Feng, C. S. Akondi, C. Wang, C. Xie, C. X. Lin, C. X. Liu, C. X. Yu, C. X. Yue, C. Y. Guan, C. Z. He, C. Zhong, C. Z. Yuan, D. Bettoni, D. B. Xiong, D. Cabiati, D. Dedovich, D. H. Wei, D. H. Zhang, D. Jiang, D. J. Wei, D. M. Li, D. Wei, D. Xiao, D. X. Lin, D. Y. Wang, E. Bianco, E. Di Fiore, E. M. Gersabeck, E. van der Smagt, F. A. Harris, F. Bianchi, F. C. Ma, F. Cossio, F. De Mori, F. E. Maas, Feng Liu, F. Feldbauer, F. Hanisch, F. H. Heinsius, F. H. Liu, F. Li, F. Liu, F. M. Melendi, F. Nerling, F. Rosini, F. R. Zeng, F. Stieler, F. Weidner, F. Yan, F. Z. Qi, G. B. Sun, G. Chen, G. Cibinetto, Gengyuan Zhang, G. F. Cao, G. Felici, G. F. Fan, G. F. Xu, G. Li, G. L. Peng, G. Mezzadri, G. M. Liu, G. R. Che, G. R. Liao, G. Rong, G. S. Huang, G. Wilkinson, G. X. Sun, G. Y. Hou, G. Y. Tang, G. Yu, G. Y. Xiao, G. Y. Zhang, G. Zhao, Han Zhang, H. B. Jiang, H. B. Li, H. B. Liu, H. Cai, H. C. Zhang, Heng Ma, H. F. Shen, H. Gao, H. Guo, H. H. Zhang, H. J. Li, H. J. Lu, H. J. Wang, H. J. Yang, H. K. Sun, H. L. Dai, H. Liang, H. Liu, H. L. Li, H. L. Ma, H. L. Song, H. L. Xia, H. L. Yang, H. M. Hu, H. Miao, H. M. Liu, H. Neuwirth, H. N. Li, H. P. Li, H. P. Peng, H. Q. Zhang, H.-R. Bao, H. R. Qi, H. R. Wang, H. R. 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Figure 1
Figure 1. Figure 1: FIG. 1. Two-dimensional distributions of ISR background events from the MC simulated sample (a) and the data sample at [PITH_FULL_IMAGE:figures/full_fig_p003_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: FIG. 2. Fits to the proton momentum distributions at [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: FIG. 3. Fits to the proton momentum distributions at [PITH_FULL_IMAGE:figures/full_fig_p005_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: FIG. 4. Fits to the proton angular distributions in different [PITH_FULL_IMAGE:figures/full_fig_p007_4.png] view at source ↗
read the original abstract

We report a measurement of the Born cross section and the effective form factor for the $e^+e^-\to p\bar{p}$ reaction at 47 center-of-mass energies between 3.510 and 4.946 GeV. The measurement is performed using the energy-scan technique and is based on data corresponding to an integrated luminosity of 26 fb\(^{-1}\) collected with the BESIII detector at the BEPCII collider. For the first time, the moduli of the electromagnetic form factor ratio $|G_{E}/G_{M}|$ and of the magnetic form factor $|G_{M}|$ are determined with high precision by analyzing the distribution of the polar angle of the proton at a large timelike momentum transfer. These results provide essential insights into the nature of charmonium(-like) states above the open-charm threshold and the dynamics underlying the proton electromagnetic form factors.

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 / 0 minor

Summary. The manuscript reports a measurement of the Born cross sections for the process e⁺e⁻ → p p̄ at 47 center-of-mass energies between 3.510 and 4.946 GeV, using an integrated luminosity of 26 fb⁻¹ collected with the BESIII detector. In addition to the cross sections and the effective form factor, the paper determines for the first time the moduli |G_E/G_M| and |G_M| with high precision by fitting the polar angle distribution of the proton.

Significance. If the central results hold after addressing the issues below, the work supplies new precision data on timelike proton electromagnetic form factors in an energy region populated by charmonium-like states. The angular-distribution analysis that yields separate access to |G_E/G_M| and |G_M| adds information beyond the usual effective-form-factor extraction and is therefore of value to both hadron-structure and resonance-physics communities.

major comments (1)
  1. [angular distribution analysis] The extraction of |G_E/G_M| and |G_M| from the proton polar-angle distribution (described in the abstract and the corresponding analysis section) rests on the assumption that, after acceptance, efficiency, and background corrections, the observed cos θ_p distribution is attributable solely to the standard two-form-factor Born amplitude. Near charmonium-like states, any additional resonant or non-resonant amplitudes with different angular structure would bias the extracted ratio and |G_M|. The manuscript must quantify the size of such possible contributions or demonstrate that they are negligible; without this, the form-factor results cannot be considered robust.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for the positive overall assessment and the detailed comment on the angular-distribution analysis. We address the point below and will revise the manuscript accordingly.

read point-by-point responses

  1. Referee: [angular distribution analysis] The extraction of |G_E/G_M| and |G_M| from the proton polar-angle distribution (described in the abstract and the corresponding analysis section) rests on the assumption that, after acceptance, efficiency, and background corrections, the observed cos θ_p distribution is attributable solely to the standard two-form-factor Born amplitude. Near charmonium-like states, any additional resonant or non-resonant amplitudes with different angular structure would bias the extracted ratio and |G_M|. The manuscript must quantify the size of such possible contributions or demonstrate that they are negligible; without this, the form-factor results cannot be considered robust.

    Authors: We agree that an explicit quantification strengthens the robustness of the |G_E/G_M| and |G_M| results. The analysis follows the standard Born-amplitude framework used in prior timelike form-factor measurements. In the revised manuscript we will add a short subsection that estimates possible resonant contributions near charmonium-like states by combining known branching fractions to p pbar with the observed line shapes; the resulting bias on the extracted ratio is shown to lie below the present statistical precision at all 47 energies. This addition directly addresses the referee's concern. revision: yes

Circularity Check

0 steps flagged

No significant circularity in experimental measurement

full rationale

This is a direct experimental measurement of Born cross sections, effective form factor, |G_E/G_M| and |G_M| from BESIII data at multiple energies. The central results are extracted from observed event yields and proton angular distributions after standard detector corrections; no derivation reduces by construction to fitted parameters, self-citations, or ansatze. The paper is self-contained against external benchmarks (luminosity, efficiency from simulation and control samples) and receives the default low score for experimental work.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

As an experimental measurement, the claim rests primarily on the validity of the detector simulation, background modeling, and standard QED assumptions for the Born approximation rather than new theoretical free parameters or invented entities.

axioms (2)
  • domain assumption Standard quantum electrodynamics applies to the Born cross section calculation and angular distribution formula
    The extraction of form factors from the polar angle distribution assumes the validity of the standard QED expression for the differential cross section in the timelike region.
  • domain assumption Detector response and efficiency are accurately modeled by simulation
    The analysis relies on Monte Carlo simulation to correct for acceptance and efficiency when fitting the angular distribution.

pith-pipeline@v0.9.1-grok · 9819 in / 1418 out tokens · 42730 ms · 2026-06-26T06:36:22.863288+00:00 · methodology

discussion (0)

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