A Review of Target Mass Corrections

Schienbein, Ingo; Radescu, Voica A.; Zeller, G. P.; Christy, M. Eric; Keppel, C. E.; McFarland, Kevin S.; Melnitchouk, W.; Olness, Fredrick I.; Reno, Mary Hall; Steffens, Fernando; Yu, Ji-Young

doi:10.48550/arxiv.0709.1775

Cited by 8 publications

(11 citation statements)

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“…The detailed relationships between the five structure functions, including NLO QCD together with target mass and charm quark mass corrections, are discussed, for example, in Refs. [945][946][947][948].…”

Section: Tau Neutrino Physicsmentioning

confidence: 99%

A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case

Alekhin,

Altmannshofer,

Asaka

et al. 2015

Preprint

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145

261

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This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (Search for Hidden Particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below the Fermi scale, inaccessible to the LHC experiments, and to study tau neutrino physics. The same proton beam setup can be used later to look for decays of tau-leptons with lepton flavour number non-conservation, τ → 3µ and to search for weakly-interacting sub-GeV dark matter candidates. We discuss the evidence for physics beyond the Standard Model and describe interactions between new particles and four different portals -scalars, vectors, fermions or axion-like particles. We discuss motivations for different models, manifesting themselves via these interactions, and how they can be probed with the SHiP experiment and present several case studies. The prospects to search for relatively light SUSY and composite particles at SHiP are also discussed. We demonstrate that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the Standard Model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation.

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Section: Tau Neutrino Physicsmentioning

confidence: 99%

A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case

Alekhin,

Altmannshofer,

Asaka

et al. 2015

Preprint

Self Cite

145

261

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show abstract

“…Of the various types of 1/Q power corrections, TMCs receive particular attention in moderate-to low-Q applications, where M/Q-suppressed effects that are ordinarily neglected in standard collinear factorization become important [20]. The most common approach to quantifying TMCs is based on the pioneering work of Georgi and Politzer [21] and Nachtmann [22].…”

Section: Introductionmentioning

confidence: 99%

What are the low- Q and large- x boundaries of collinear QCD factorization theorems?

et al. 2017

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Familiar factorized descriptions of classic QCD processes such as deeply-inelastic scattering (DIS) apply in the limit of very large hard scales, much larger than nonperturbative mass scales and other nonperturbative physical properties like intrinsic transverse momentum. Since many interesting DIS studies occur at kinematic regions where the hard scale, Q ∼ 1-2 GeV, is not very much greater than the hadron masses involved, and the Bjorken scaling variable x bj is large, x bj 0.5, it is important to examine the boundaries of the most basic factorization assumptions and assess whether improved starting points are needed. Using an idealized field-theoretic model that contains most of the essential elements that a factorization derivation must confront, we retrace the steps of factorization approximations and compare with calculations that keep all kinematics exact. We examine the relative importance of such quantities as the target mass, light quark masses, and intrinsic parton transverse momentum, and argue that a careful accounting of parton virtuality is essential for treating power corrections to collinear factorization. We use our observations to motivate searches for new or enhanced factorization theorems specifically designed to deal with moderately low-Q and large-x bj physics.

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“…There is a traditional challenge with the behavior of the both polarized and unpolarized target mass corrected structure functions in the neighborhood of x = 1. Many attempts have been made to avoid this issue by considering various prescriptions in the literature [5,23,[28][29][30][31]. These solutions are not unique.…”

Section: B Target Mass Corrections and Threshold Problemmentioning

confidence: 99%

“…The cuts are of the order Q 2 4 GeV 2 and W 2 14 GeV 2 [3,4], which means that x is limited to x 0.7. These kinematic cuts eliminate the contribution of corrections from various nonperturbative effects at finite Q 2 , such as target mass corrections (TMCs) [5] and dynamical higher twist contributions [6]. These corrections become increasingly significant as Q 2 is reduced and x tends to 1.…”

Section: Introductionmentioning

confidence: 99%

Target mass corrections and higher twist effects in polarized deep-inelastic scattering

2014

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We perform a next-to-leading-order QCD analysis to world data on polarized structure functions g1 and g2 in a fixed-flavor number scheme. We include target mass corrections and higher twist effects in our fitting procedure and study their non-negligible effects on physically interesting quantities. Twist-3 contributions to both polarized structure functions are determined, and the accuracy of the extracted polarized parton distribution functions is improved. 3 He and 3 H polarized structure functions are described based on our fit result. Moreover, sum rules are derived and compared with available theoretical and experimental results.

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A Review of Target Mass Corrections

Cited by 8 publications

References 0 publications

A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case

A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case

What are the low- Q and large- x boundaries of collinear QCD factorization theorems?

Target mass corrections and higher twist effects in polarized deep-inelastic scattering

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