scholarly journals Study of tau neutrino production property with measuring open-Charms at 400 GeV proton beam dump

2018 ◽  
Author(s):  
Osamu Sato ◽  
1982 ◽  
Vol 13 (3) ◽  
pp. 179-189 ◽  
Author(s):  
H. Abramowicz ◽  
J. G. H. Groot ◽  
J. T. He ◽  
J. Knobloch ◽  
J. May ◽  
...  

1986 ◽  
Vol 57 (7) ◽  
pp. 923-923 ◽  
Author(s):  
R. C. Ball ◽  
C. T. Coffin ◽  
H. R. Gustafson ◽  
L. W. Jones ◽  
M. J. Longo ◽  
...  

1992 ◽  
Vol 279 (3-4) ◽  
pp. 405-410 ◽  
Author(s):  
J. Blümlein ◽  
J. Brunner ◽  
H.-J. Grabosch ◽  
P. Kostka ◽  
P. Lanius ◽  
...  

1983 ◽  
Vol 51 (9) ◽  
pp. 743-746 ◽  
Author(s):  
R. C. Ball ◽  
C. T. Coffin ◽  
H. R. Gustafson ◽  
L. W. Jones ◽  
M. J. Longo ◽  
...  

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Matthew J. Dolan ◽  
Torben Ferber ◽  
Christopher Hearty ◽  
Felix Kahlhoefer ◽  
Kai Schmidt-Hoberg

A mistake has been found in the numerical code used to reproduce the bounds from proton beam dump experiments from ref. [1] in figures 2 and 7 of ref. [2]. Correcting this mistake leads to slightly stronger bounds as shown below. We note that this correction does not include recent improvements in the analysis of proton beam dump experiments [3]. Additional recent bounds on GeV-scale ALPs can be found in refs. [4–8].


2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Kevin J. Kelly ◽  
Pedro A. N. Machado ◽  
Alberto Marchionni ◽  
Yuber F. Perez-Gonzalez

Abstract We propose the operation of LEvEL, the Low-Energy Neutrino Experiment at the LHC, a neutrino detector near the Large Hadron Collider Beam Dump. Such a detector is capable of exploring an intense, low-energy neutrino flux and can measure neutrino cross sections that have previously never been observed. These cross sections can inform other future neutrino experiments, such as those aiming to observe neutrinos from supernovae, allowing such measurements to accomplish their fundamental physics goals. We perform detailed simulations to determine neutrino production at the LHC beam dump, as well as neutron and muon backgrounds. Measurements at a few to ten percent precision of neutrino-argon charged current and neutrino-nucleus coherent scattering cross sections are attainable with 100 ton-year and 1 ton-year exposures at LEvEL, respectively, concurrent with the operation of the High Luminosity LHC. We also estimate signal and backgrounds for an experiment exploiting the forward direction of the LHC beam dump, which could measure neutrinos above 100 GeV.


2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Giacomo Marocco ◽  
Subir Sarkar

We derive limits on millicharged dark states, as well as particles with electric or magnetic dipole moments, from the number of observed forward electron scattering events at the Big European Bubble Chamber in the 1982 CERN-WA-066 beam dump experiment. The dark states are produced by the 400~GeV proton beam primarily through the decays of mesons produced in the beam dump, and the lack of excess events places bounds extending up to GeV masses. These improve on bounds from all other experiments, in particular CHARM~II.


2018 ◽  
Vol 179 ◽  
pp. 01002
Author(s):  
Giovanni De Lellis

The discovery of the Higgs boson has fully confirmed the Standard Model of particles and fields. Nevertheless, there are still fundamental phenomena, like the existence of dark matter and the baryon asymmetry of the Universe, which deserve an explanation that could come from the discovery of new particles. The SHiP experiment at CERN meant to search for very weakly coupled particles in the few GeV mass domain has been recently proposed. The existence of such particles, foreseen in different theoretical models beyond the Standard Model, is largely unexplored. A beam dump facility using high intensity 400 GeV protons is a copious source of such unknown particles in the GeV mass range. The beam dump is also a copious source of neutrinos and in particular it is an ideal source of tau neutrinos, the less known particle in the Standard Model. Indeed, tau anti-neutrinos have not been directly observed so far. We report the physics potential of such an experiment including the tau neutrino magnetic moment.


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