scholarly journals Erratum to: Revised constraints and Belle II sensitivity for visible and invisible axion-like particles

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 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.


2017 ◽  
Vol 2017 (12) ◽  
Author(s):  
Matthew J. Dolan ◽  
Torben Ferber ◽  
Christopher Hearty ◽  
Felix Kahlhoefer ◽  
Kai Schmidt-Hoberg
Keyword(s):  
Belle Ii ◽  

1992 ◽  
Vol 56 (2) ◽  
pp. 175-180 ◽  
Author(s):  
P. Berge ◽  
F. Dydak ◽  
C. Guyot ◽  
R. Hagelberg ◽  
J. P. Merlo ◽  
...  
Keyword(s):  

2021 ◽  
Vol 81 (8) ◽  
Author(s):  
Stefan Ghinescu ◽  
Babette Döbrich ◽  
Elisa Minucci ◽  
Tommaso Spadaro

AbstractThe search for feebly-interacting new-physics particles in the MeV-GeV mass range often involves high-intensity beams dumped into thick heavy targets. The challenge of evaluating the expected backgrounds for these searches from first principles is limited by the CPU time needed to generate the shower induced by the primary beam. We present a Monte Carlo biasing method allowing a three orders of magnitude increase in the efficiency for the simulation of the muon production in a 400 GeV/c proton beam-dump setup. At the same time, this biasing method is maintaining nearly every feature of a simulation from first principles.


2008 ◽  
Vol 52 (9(3)) ◽  
pp. 940-944
Author(s):  
Do Heon Kim ◽  
Jiho Kim ◽  
Choong-Sup Gil ◽  
Wan Young Maeng

1992 ◽  
Vol 295 (1-2) ◽  
pp. 154-158 ◽  
Author(s):  
L. Barabash ◽  
S. Baranov ◽  
Y. Batusov ◽  
S. Bunyatov ◽  
O. Denisov ◽  
...  

1984 ◽  
Vol 53 (14) ◽  
pp. 1314-1317 ◽  
Author(s):  
R. C. Ball ◽  
C. T. Coffin ◽  
H. R. Gustafson ◽  
I. D. Leedom ◽  
L. W. Jones ◽  
...  

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