Extraction of the higher-twist parton distribution $e(x)$ from CLAS data

Courtoy, Aurore; Miramontes, Angel; Avakian, Harut; Mirazita, Marco; Pisano, Silvia

doi:10.48550/arxiv.2203.14975

Cited by 3 publications

(4 citation statements)

References 63 publications

(123 reference statements)

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“…This process is also currently affected by a large uncertainty. We expect it to be quantified by determining the sign of the pion-pole process generated by the WO, and also by fixing the problem of the inconsistency of the pion-nucleon sigma-term between phenomenology and lattice QCD [172][173][174].…”

Section: Edm Of 3 He Nucleusmentioning

confidence: 99%

Weinberg operator contribution to the CP-odd nuclear force in the quark model

Yamanaka¹,

Oka²

2022

Preprint

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The contribution of the CP violating three-gluon interaction, proposed by Weinberg, to the shortrange CP-odd nuclear force is evaluated in the nonrelativistic quark model. We first show that the naive leading contribution generated by the quark exchange process vanishes at sufficiently short distance within the resonating group method, by considering the one-loop level gluon exchange CP-odd interquark potential induced by the Weinberg operator with massive quarks and gluons. We then estimate the true leading contribution by evaluating the gluonic correction to the CP-odd interquark potential in the closure approximation. It is found that the resulting irreducible CP-odd nuclear force is comparable to that generated by the chiral rotation of the CP-even short-range nuclear force, where the CP-odd mass calculated with QCD sum rules is used as input. The explicit calculation of the electric dipole moment (EDM) of the 3 He nucleus yields d (irr)3 He (w) = −1.5 w e MeV. The total 3 He EDM, accounting for the intrinsic nucleon EDM, the pion-exchange and the shortrange CP-odd nuclear force, is d (tot)3 He (w) = 20 +14 −11 w e MeV, with the dominant effect coming from the intrinsic nucleon EDM.

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Section: Edm Of 3 He Nucleusmentioning

confidence: 99%

Weinberg operator contribution to the CP-odd nuclear force in the quark model

Yamanaka¹,

Oka²

2022

Preprint

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“…However, they are important, as the additional degrees of freedom in the final states, allow a more targeted access to the nucleon structure in semi-inclusive deep inelastic scattering experiments (SIDIS), e.g., at JLab and the EIC. One recent example of this is the extraction of the twist-3 PDF e(x) via di-hadron correlations, which is sensitive to the force gluons exert on a fragmenting quark as it traverses the nucleon remnant [60][61][62][63].…”

Section: Understanding Hadronizationmentioning

confidence: 99%

“…An example is the use of di-hadron correlations to extract the twist-3 FF e(x) in SIDIS. Using traditional single-hadron measurements, the relevant observable contains a mix of several unknown PDFs and FFs [75], whereas using di-hadron FFs, these ambiguity is under control [63] For light hadron spin and transverse momentum dependent fragmentation functions higher statistics would allow a more sophisticated multi-dimensional analysis which may be even of interest as input for transverse momentum dependent distributions functions relevant at the LHC. For heavier final states, such as hyperons or charmed bayrons, the fragmentation measurements have just begun at Belle [76] but statistics are in some cases still limited.…”

Section: Sec III B 2 Describes How Belle Ii Measurements Can Inform T...mentioning

confidence: 99%

Opportunities for precision QCD physics in hadronization at Belle II -- a snowmass whitepaper

Accardi¹,

Chien²,

d'Enterria³

et al. 2022

Preprint

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This document presents a selection of QCD studies accessible to high-precision studies with hadronic final states in e + e − collisions at Belle II. The exceptionally clean environment and the state-of-the-art capabilities of the Belle II detector (including excellent particle identification and improved vertex reconstruction), coupled with an unprecedented data-set size, will make possible to carry out multiple valuable measurements of the strong interaction including hadronic contributions to the muon (g − 2) and the QCD coupling, as well as advanced studies of parton hadronization and dynamical quark mass generation.

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“…Tagging on such final-state degrees of freedom allows more targeted access to the hadron structure in semi-inclusive deep inelastic scattering (SIDIS) experiments, e.g. at JLab and the EIC [255][256][257][258], where TMD PDFs and FFs will be the primary means to investigate the mechanism of hadronization in a 3D-picture [259].…”

Section: Non-perturbative Qcdmentioning

confidence: 99%

The Future of US Particle Physics: The Energy Frontier Report – 2021 US Community Study on the Future of Particle Physics

Reina¹,

Tricoli²,

Begel³

et al. 2022

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The Energy Frontier (EF) aims at investigating the fundamental physics of the Universe at the highest energies or -equivalently -the shortest timescales after the Big Bang. We investigate open questions and explore the unknown using various probes to discover and characterize the nature of new physics, through the breadth and multitude of collider physics signatures. While the naturalness principle suggests new physics to lie at mass scales close to the electroweak scale, in many cases direct searches for specific models have placed strong bounds around 1-2 TeV. Thus, the energy frontier has moved beyond the TeV scale and the exploration of the 10 TeV scale becomes crucial to shed light on physics beyond the Standard Model (SM).We need to use both energy reach and precision measurements to push beyond the 1 TeV scale in our exploration. The quest for new physics will be thus conducted in a two-tier approach: 1) looking for indirect evidence of beyond-the-Standard-Model physics (BSM) through precision measurements of the properties of the Higgs boson and other SM particles, and 2) searching for direct evidence of BSM physics at the energy frontier, reaching multi-TeV scales.The EF currently has a top-notch program with the LHC and the High Luminosity LHC (HL-LHC) at CERN, which sets the basis for the EF vision. The EF supports continued strong US participation in the success of the LHC, and the HL-LHC construction, operations, computing and software, and most importantly in the physics research programs, including auxiliary experiments.The discussions on projects that extend the reach of the HL-LHC underlined that preparations for the next collider experiments have to start now to maintain and strengthen the vitality and motivation of the community. Colliders are the ultimate tool to carry out such a program thanks to the broad and complementary set of measurements and searches they enable. Several projects have been proposed such as ILC, CLIC, FCC-ee, CEPC, Cool Copper Collider (C 3 ) or HELEN for e + e − Higgs Factories, and CLIC at 3 TeV centre-of-mass energy, FCC-hh, SPPC and Muon Collider for multi-TeV colliders. For a detailed discussion of timeline, cost, challenges of those accelerator projects we refer to the Accelerator Frontier Integration Task-Force (ITF) report [1] and Appendix A.3. Dedicated fora were established across frontiers to bring together diverse expertise in the study of future e + e − and µ + µ − colliders. Results from their studies are available in their reports [2, 3] and have informed the studies presented in this report.All proposed collider physics experiments need complex detectors as well as software and computing infrastructure, with cutting-edge technologies to meet their ambitious physics goals. The needs extend beyond generic R&D. Experience from R&D and building previous experiments informs us that it takes about 10 years from CD-0 (Critical Decision -0) to the end of construction of a collider detector. For e + e − Higgs factories, immediate investment in targeted detector R&...

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Extraction of the higher-twist parton distribution $e(x)$ from CLAS data

Cited by 3 publications

References 63 publications

Weinberg operator contribution to the CP-odd nuclear force in the quark model

Weinberg operator contribution to the CP-odd nuclear force in the quark model

Opportunities for precision QCD physics in hadronization at Belle II -- a snowmass whitepaper

The Future of US Particle Physics: The Energy Frontier Report – 2021 US Community Study on the Future of Particle Physics

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