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A precise measurement of 180 GeV muon energy losses in iron

  • Author(s): Amaral, P
  • Amorim, A
  • Anderson, K
  • Artikov, A
  • Benetta, R
  • Berglund, S
  • Biscarat, C
  • Blanch, O
  • Blanchot, G
  • Bogush, A
  • Bohm, C
  • Boldea, V
  • Borisov, O
  • Bosman, M
  • Bromberg, C
  • Bravo, S
  • Budagov, J
  • Burdin, S
  • Caloba, L
  • Camarena, F
  • Carvalho, J
  • Castillo, MV
  • Cavalli-Sforza, M
  • Cavasinni, V
  • Cerqueira, AS
  • Chadelas, R
  • Chirikov-Zorin, I
  • Chlachidze, G
  • Cobal, M
  • Cogswell, F
  • Cologna, S
  • Constantinescu, S
  • Costanzo, D
  • Cowan, B
  • Crouau, M
  • Daudon, F
  • David, M
  • Davidek, T
  • Dawson, J
  • De, K
  • Delfino, M
  • Del Prete, T
  • De Santo, A
  • Di Girolamo, B
  • Dita, S
  • Downing, R
  • Engström, M
  • Errede, D
  • Errede, S
  • Fassi, F
  • Fenyuk, A
  • Ferrer, A
  • Flaminio, V
  • Flix, J
  • Garabik, R
  • Gil, I
  • Gildemeister, O
  • Glagolev, V
  • Gomes, A
  • Gonzalez, V
  • González De La Hoz, S
  • Grabski, V
  • Grenier, P
  • Hakopian, H
  • Haney, M
  • Hellman, S
  • Henriques, A
  • Hebrard, C
  • Higon, E
  • Holik, P
  • Holmgren, S
  • Hruska, I
  • Huston, J
  • Jon-And, K
  • Kakurin, S
  • Karyukhin, A
  • Khubua, J
  • Kopikov, S
  • Krivkova, P
  • Kukhtin, V
  • Kulchitsky, Y
  • Kuzmin, M
  • Lami, S
  • Lapin, V
  • Lazzeroni, C
  • Lebedev, A
  • Leitner, R
  • Li, J
  • Lomakin, Y
  • Lomakina, O
  • Lokajicek, M
  • Lopez Amengual, JM
  • Maio, A
  • Malyukov, S
  • Marroquin, F
  • Mataix, L
  • Mazzoni, E
  • Merritt, F
  • Miller, R
  • et al.
Abstract

The energy loss spectrum of 180 GeV muons has been measured with the 5.6 m long finely segmented Module 0 of the ATLAS hadron Tile Calorimeter at the CERN SPS. The differential probability dP/dv per radiation length of a fractional energy loss v = ΔΕμ/Εμ has been measured in the range 0.025 ≤ v ≤ 0.97; it is compared with theoretical predictions for energy losses due to bremsstrahlung, production of electron-positron pairs, and energetic knock-on electrons. The iron elastic form factor correction ΔelFe = 1.63 ± 0.17stat ± 0.23Syst±0.200.14theor to muon bremsstrahlung in the region of no screening of the nucleus by atomic electrons has been measured for the first time, and is compared with different theoretical predictions.

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