The Large Hadron Collider

Evans, Lyndon R

doi:10.1088/1367-2630/9/9/335

Cited by 85 publications

(37 citation statements)

References 3 publications

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“…However, the beam protons are characterized by a momentum spread resulting from the beam longitudinal emittance and the RF configuration. For the LHC this spread is δ = − p p 10 0 4 [14], which is not significant with respect to the beam momentum offset uncertainty of 10 −3 , reported in table 1. Therefore, the terms…”

Section: Proton Transport Modelmentioning

confidence: 71%

LHC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment

Antchev¹,

Aspell²,

Atanassov³

et al. 2014

New J. Phys.

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The TOTEM Collaboration G Antchev 12 , P Aspell 8 , I Atanassov 8,12 , V Avati 8 , J Baechler AbstractPrecise knowledge of the beam optics at the LHC is crucial to fulfill the physics goals of the TOTEM experiment, where the kinematics of the scattered protons is reconstructed with near-beam telescopes-so-called Roman pots (RP). Before being detected, the protons' trajectories are influenced by the magnetic fields of the accelerator lattice. Thus precise understanding of the proton transport is of key importance for the experiment. A novel method of optics evaluation is proposed which exploits kinematical distributions of elastically scattered protons observed in the RPs. Theoretical predictions, as well as Monte Carlo studies, show that the residual uncertainty of the optics estimation method is smaller than 2.5‰.

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Section: Proton Transport Modelmentioning

confidence: 71%

LHC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment

Antchev¹,

Aspell²,

Atanassov³

et al. 2014

New J. Phys.

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“…By use of (20)- (22), the ratio of the S ∓ decay width to the Hubble expansion rate as well as the baryon asymmetry are calculated as follows…”

Section: Numerical Resultsmentioning

confidence: 99%

Model of four generation fermions and cold dark matter and matter-antimatter asymmetry

Yang

2013

Phys. Rev. D

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I suggest a practical particle model as an extension to the standard model. The model has a TeV scale U(1) B−L symmetry and it contains the fourth generation fermions with the TeV scale masses, in which including a cold dark matter neutrino. The model can completely account for the fermion flavor puzzles, the cold dark matter, and the matter-antimatter asymmetry through the leptogenesis. In particular, it is quite feasible and promising to test the model in future experiments.

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“…LHCf [1] consists of two small sampling calorimeters installed in the Large Hadron Collider (LHC [2]) tunnel at ±140 m from IP1 (ATLAS [3] interaction point). Being placed after the D1 dipole magnet, only neutral particles produced by proton-ion collisions and having pseudo-rapidity η > 8.4 can reach the experiment.…”

Section: The Experimentsmentioning

confidence: 99%

The LHCf experiment: recent physics results

Berti¹,

Adriani²,

Bonechi³

et al. 2019

Proceedings of the 39th International Conference on High Energy Physics — PoS(ICHEP2018)

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The main aim of the LHCf experiment is to provide precise measurements of the production spectra relative to neutral particle produced by high energy proton-ion collisions in the very forward region. This information is necessary in order to test and tune hadronic interaction models used by ground-based cosmic rays experiments. In order to reach this goal, LHCf makes use of two small sampling calorimeters installed in the LHC tunnel at ±140 m from IP1, able to detect neutral particles having pseudo-rapidity η > 8.4. In this paper we will present the current status of the LHCf experiment, regarding in particular the first analysis results from data taking relative to p-p collisions at √ s = 13 TeV.PACS number(s): 13.85.-t, 13.85.Tp

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The Large Hadron Collider

Cited by 85 publications

References 3 publications

LHC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment

LHC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment

Model of four generation fermions and cold dark matter and matter-antimatter asymmetry

The LHCf experiment: recent physics results

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