Nuclear longitudinal structure function in <i>eA</i> processes at the LHeC

Boroun, G. R.; Rezaei, B.; Heidari, S.

doi:10.1142/s0217751x17501974

Cited by 6 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was recently shown that Lorentz invariance violation in the weak vector-boson sector can be studied in electron-proton scattering [710] via a Fourier analysis of the parity-violating asymmetry in DIS. Moreover, NP could be related to nucleon, nuclear, and top structure func-tions, as discussed in references [41,711,712]. Investigations of the B ( * ) c meson and doubly heavy baryon have also been shown to have discovery potential for NP [713][714][715].…”

Section: Discussionmentioning

confidence: 99%

The Large Hadron–Electron Collider at the HL-LHC

Agostini

Aksakal

Alekhin

et al. 2021

J. Phys. G: Nucl. Part. Phys.

128

126

View full text Add to dashboard Cite

The Large Hadron–Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron–proton and proton–proton operations. This report represents an update to the LHeC’s conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics by extending the accessible kinematic range of lepton–nucleus scattering by several orders of magnitude. Due to its enhanced luminosity and large energy and the cleanliness of the final hadronic states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, this report contains a detailed updated design for the energy-recovery electron linac (ERL), including a new lattice, magnet and superconducting radio-frequency technology, and further components. Challenges of energy recovery are described, and the lower-energy, high-current, three-turn ERL facility, PERLE at Orsay, is presented, which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution, and calibration goals that arise from the Higgs and parton-density-function physics programmes. This paper also presents novel results for the Future Circular Collider in electron–hadron (FCC-eh) mode, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies.

show abstract

Section: Discussionmentioning

confidence: 99%

The Large Hadron–Electron Collider at the HL-LHC

Agostini

Aksakal

Alekhin

et al. 2021

J. Phys. G: Nucl. Part. Phys.

128

126

View full text Add to dashboard Cite

show abstract

“…A depletion in this ratio is called "shadowing", whereas an enhancement is called "anti-shadowing". The anti-shadowing is related to the coherent multiple scattering where it introduces the medium size enhanced (in powers of A 1/3 ) nuclear effects [41][42][43][44][45][46]. The nuclear shadowing is controlled by the interplay of photon lifetime and coherent time fluctuations for transition between no shadowing and saturated shadowing at very small x [47,48].…”

Section: The Results For Shadowing Effects In the Gluon Distribution ...mentioning

confidence: 99%

Saturation Approach in Top Production

Boroun

2018

Phys. Part. Nuclei Lett.

View full text Add to dashboard Cite

We develop the relationship between the gluon distribution obtained using a dipole model fitted to low x data on the proton structure function for nuclear shadowing in deep-inelastic scattering corresponding to kinematic regions accessible by the future experiments at electron-ion colliders. The improved dipole model on the impact parameter for nuclei shows the nuclear shadowing at small-x and the nuclear saturation at large-r. Nuclear shadowing is treated within the color dipole formalism with respect to the mass number A. The magnitude of nuclear shadowing in the impact parameter saturation model (IP-sat) is predicted for light nuclei in a wide range of the impact parameter b and the transverse dipole size r. We compare the model, originally proposed for gluon density within the dipole framework long ago by R.S.Thorne, with nCETQ15 and show that the nuclear ratio σ A dip /σ0 has a similar behavior with the Golec-Biernat-Wüsthoff (GBW) model in a wide range of r and A at low x. We find that at x = 10 −6 and for heavy nuclei, the ratio of dipole cross sections have a saddle-shaped behavior in the range 2×10 −2 r 2×10 −1 fm, whose magnitude increases with an increase of the atomic number A. This behavior becomes softer when the qqg components in the diffractive systems are considered.

show abstract

“…This importance, along with the t-quark density, can be explored at future circular collider energies. One of the important top quark production modes is photoproduction [78][79][80][81][82][83][84][85][86][87][88][89]. The total cross-section prediction at the LHeC is 0.05 pb [90].…”

Section: Ttmentioning

confidence: 99%

Importance of heavy quark longitudinal structure function measurements at future circular collider energies

Boroun

2021

Chinese Phys. C

Self Cite

View full text Add to dashboard Cite

In this article, we consider the ratio of structure functions for heavy quark pair production at low values of . The importance of this ratio for charm and beauty pair production is examined according to the Hadron Electron Ring Accelerator (HERA) data. The behavior of these ratios is considered due to the hard pomeron behavior of the gluon distribution function. The results are in good agreement with the HERA data. Expanding this data to the range of new energies underscores the importance of these measurements for heavy quarks. The ratio of charm and beauty structure functions at the proposed Large Hadron electron Collider (LHeC) is considered as a function of invariant center-of-mass energy. For top pair production this ratio is extracted with known kinematics of the LHeC and Future Circular Collider electron-hadron (FCC-eh) colliders. Comparison of the results obtained for the ratio of top structure functions in LHeC and FCC-eh are proportional to the specified inelasticity range.

show abstract

Nuclear longitudinal structure function in eA processes at the LHeC

Cited by 6 publications

References 40 publications

The Large Hadron–Electron Collider at the HL-LHC

The Large Hadron–Electron Collider at the HL-LHC

Saturation Approach in Top Production

Importance of heavy quark longitudinal structure function measurements at future circular collider energies

Contact Info

Product

Resources

About