A measurement of the energy loss spectrum of 150 GeV muons in iron

E. Berger; R. Blair; J. Dawson; T. Fuess; V. Guarino; N. Hill; S. Magill; E. May; L. Nodulman; L. Price; J. Proudfoot; R. Stanek; D. Underwood; R. Wagner; B. Wicklund; G. Blanchot; M. Bosman; P. Casado; M. Cavalli-Sforza; I. Efthymiopoulos; Yu Ivanyushenkov; A. Juste; Ll Miralles; S. Orteu; C. Padilla; J. A. Perlas; I. Riu; B. Ronceux; F. Teubert; R. Arsenescu; S. Constantinescu; C. Blaj; V. Boldea; S. Dita; M. Cobal; O. Gildemeister; M. Nessi; A. Henriques; L. Poggioli; P. Sonderegger; G. Karapetian; K. Anderson; E. Blucher; H. Evans; F. Merritt; J. Pilcher; H. Sanders; M. Shochet; F. Tang; A. Turcot; D. Wagner; Z. Ajaltouni; F. Badaud; N. Bouhemaid; P. Brette; M. Brassard; R. Chadelas; J. C. Chevaleyre; M. Crouau; F. Daudon; J. J. Dugne; B. Michel; G. Montarou; G. S. Muanza; D. Pallin; H. Plothow-Besch; S. Poirot; G. Reinmuth; L. P. Says; F. Vazeille; A. Astvatsaturov; O. Borisov; J. Budagov; I. Chirikov-Zorin; G. Chlachidze; V. Glagolev; S. Kakurin; V. Kolomoets; V. Kovtun; V. Kukhtin; A. Lebedev; I. Liba; O. Lomakina; Yu Lomakin; S. Malyukov; I. Minashvili; D. Pantea; O. Pukhov; V. Romanov; N. Russakovich; V. Senchishin; A. Semenov; A. Sissakian; A. Shchelchkov; V. Shevtsov; S. Studenov; S. Tokar; N. Topilin; V. Vinogradov; S. Vorozhtsov; G. Yarygin; F. Cogswell; R. Downing; D. Errede; S. Errede; M. Haney; V. Simaitis; J. Thaler; P. Amaral; A. Amorim; J. Carvalho; M. David; A. Gomes; A. Maio; J. P. Martins; A. Onofre; H. Wolters; C. Bromberg; J. Huston; R. Miller; R. Richards; C. Yosef; A. Alifanov; A. Bogush; V. Golubev; V. Rumyantsev; Y. Kulchitsky; C. Angelini; D. Autiero; V. Cavasinni; D. Costanzo; A. De Santo; T. Del Prete; B. Di Girolamo; V. Flaminio; S. Lami; C. Lazzeroni; E. Mazzoni; G. Renzoni; T. Davidek; J. Dolejsi; Z. Dolezal; R. Leitner; K. Soustruznik; M. Suk; P. Tas; Z. Trka; S. Valkar; M. Zdrazil; M. Lokajicek; S. Nemecek; A. Karyukhin; V. Klyukhin; Yu Khokhlov; S. Kopikov; M. Kostrikov; M. Kulagin; V. Lapin; Y. Protopopov; V. Sidorov; A. Solodkov; E. Starchenko; A. Surkov; A. Zaitsev; L. Caloba; M. Gaspar; F. Marroquin; A. Pereira; J. M. Seixas; S. Berglund; C. Bohm; E. Johansson; S. Hellman; S. Holmgren; K. Jon-And; B. Sellden; S. Tardel; N. Yamdagni; A. Ferrer; P. F. Honoré; F. Albiol; K. De; E. Gallas; J. Li; L. Sawyer; R. Stephens; M. Turcotte; A. White; H. Hakopian; V. Grabsky; E. Mnatsakanian; A. Vartapetian

doi:10.1007/s002880050335

A measurement of the energy loss spectrum of 150 GeV muons in iron

E. Berger^*
, R. Blair
, J. Dawson
, T. Fuess
, V. Guarino
, N. Hill
, S. Magill
, E. May
, L. Nodulman
, L. Price
, J. Proudfoot
, R. Stanek
, D. Underwood
, R. Wagner
, B. Wicklund
, G. Blanchot
, M. Bosman
, P. Casado
, M. Cavalli-Sforza
, I. Efthymiopoulos

Yu Ivanyushenkov, A. Juste, Ll Miralles, S. Orteu, C. Padilla, J. A. Perlas, I. Riu, B. Ronceux, F. Teubert, R. Arsenescu, S. Constantinescu, C. Blaj, V. Boldea, S. Dita, M. Cobal, O. Gildemeister, M. Nessi, A. Henriques, L. Poggioli, P. Sonderegger, G. Karapetian, K. Anderson, E. Blucher, H. Evans, F. Merritt, J. Pilcher, H. Sanders, M. Shochet, F. Tang, A. Turcot, D. Wagner, Z. Ajaltouni, F. Badaud, N. Bouhemaid, P. Brette, M. Brassard, R. Chadelas, J. C. Chevaleyre, M. Crouau, F. Daudon, J. J. Dugne, B. Michel, G. Montarou, G. S. Muanza, D. Pallin, H. Plothow-Besch, S. Poirot, G. Reinmuth, L. P. Says, F. Vazeille, A. Astvatsaturov, O. Borisov, J. Budagov, I. Chirikov-Zorin, G. Chlachidze, V. Glagolev, S. Kakurin, V. Kolomoets, V. Kovtun, V. Kukhtin, A. Lebedev, I. Liba, O. Lomakina, Yu Lomakin, S. Malyukov, I. Minashvili, D. Pantea, O. Pukhov, V. Romanov, N. Russakovich, V. Senchishin, A. Semenov, A. Sissakian, A. Shchelchkov, V. Shevtsov, S. Studenov, S. Tokar, N. Topilin, V. Vinogradov, S. Vorozhtsov, G. Yarygin, F. Cogswell, R. Downing, D. Errede, S. Errede, M. Haney, V. Simaitis, J. Thaler, P. Amaral, A. Amorim, J. Carvalho, M. David, A. Gomes, A. Maio, J. P. Martins, A. Onofre, H. Wolters, C. Bromberg, J. Huston, R. Miller, R. Richards, C. Yosef, A. Alifanov, A. Bogush, V. Golubev, V. Rumyantsev, Y. Kulchitsky, C. Angelini, D. Autiero, V. Cavasinni, D. Costanzo, A. De Santo, T. Del Prete, B. Di Girolamo, V. Flaminio, S. Lami, C. Lazzeroni, E. Mazzoni, G. Renzoni, T. Davidek, J. Dolejsi, Z. Dolezal, R. Leitner, K. Soustruznik, M. Suk, P. Tas, Z. Trka, S. Valkar, M. Zdrazil, M. Lokajicek, S. Nemecek, A. Karyukhin, V. Klyukhin, Yu Khokhlov, S. Kopikov, M. Kostrikov, M. Kulagin, V. Lapin, Y. Protopopov, V. Sidorov, A. Solodkov, E. Starchenko, A. Surkov, A. Zaitsev, L. Caloba, M. Gaspar, F. Marroquin, A. Pereira, J. M. Seixas, S. Berglund, C. Bohm, E. Johansson, S. Hellman, S. Holmgren, K. Jon-And, B. Sellden, S. Tardel, N. Yamdagni, A. Ferrer, P. F. Honoré, F. Albiol, K. De, E. Gallas, J. Li, L. Sawyer, R. Stephens, M. Turcotte, A. White, H. Hakopian, V. Grabsky, E. Mnatsakanian, A. Vartapetian

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability dP/dυ per radiation length of a fractional energy loss υ = ΔE_μ/E_μ has been measured in the range υ = 0.01 ÷ 0.95; it is compared with the theoretical predictions for energy losses due to bremsstrahlung and production of electron-positron pairs or of energetic knock-on electrons. The integrated probability ∫_0.01^0.95(dP/dυ)dυ is (1.610 ± 0.015_stat ±0 .105_syst)·10^-3 in agreement with the theoretical predictions 1.556·10^-3 and 1.619·10^-3. Agreement with theory is also found in two intervals of υ where production of electron-positron pairs and knock-on electrons dominates. In the region of bremsstrahlung dominance (υ = 0.12 ÷ 0.95) the measured integrated probability (1.160 ± 0.040_stat ± 0.075_syst)·10^-4 is in agreement with the theoretical value of 1.185·10^-4, obtained using the Petrukhin and Shestakov description of the bremsstrahlung process. The same result is about 3.6 standard deviations (defined as the quadratic sum of statistical and systematic errors) lower than the theoretical prediction of 1.472·10^-4, obtained using Tsai's description of bremsstrahlung.

Original language	English
Pages (from-to)	455-463
Number of pages	9
Journal	Zeitschrift fur Physik C-Particles and Fields
Volume	73
Issue number	3
DOIs	https://doi.org/10.1007/s002880050335
Publication status	Published - Feb 1997

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10.1007/s002880050335

Cite this

Berger, E., Blair, R., Dawson, J., Fuess, T., Guarino, V., Hill, N., Magill, S., May, E., Nodulman, L., Price, L., Proudfoot, J., Stanek, R., Underwood, D., Wagner, R., Wicklund, B., Blanchot, G., Bosman, M., Casado, P., Cavalli-Sforza, M., ... Vartapetian, A. (1997). A measurement of the energy loss spectrum of 150 GeV muons in iron. Zeitschrift fur Physik C-Particles and Fields, 73(3), 455-463. https://doi.org/10.1007/s002880050335

@article{91df80562de5438c8d6da7b601210730,

title = "A measurement of the energy loss spectrum of 150 GeV muons in iron",

abstract = "The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability dP/dυ per radiation length of a fractional energy loss υ = ΔEμ/Eμ has been measured in the range υ = 0.01 ÷ 0.95; it is compared with the theoretical predictions for energy losses due to bremsstrahlung and production of electron-positron pairs or of energetic knock-on electrons. The integrated probability ∫0.010.95(dP/dυ)dυ is (1.610 ± 0.015stat ±0 .105syst)·10-3 in agreement with the theoretical predictions 1.556·10-3 and 1.619·10-3. Agreement with theory is also found in two intervals of υ where production of electron-positron pairs and knock-on electrons dominates. In the region of bremsstrahlung dominance (υ = 0.12 ÷ 0.95) the measured integrated probability (1.160 ± 0.040stat ± 0.075syst)·10-4 is in agreement with the theoretical value of 1.185·10-4, obtained using the Petrukhin and Shestakov description of the bremsstrahlung process. The same result is about 3.6 standard deviations (defined as the quadratic sum of statistical and systematic errors) lower than the theoretical prediction of 1.472·10-4, obtained using Tsai's description of bremsstrahlung.",

author = "E. Berger and R. Blair and J. Dawson and T. Fuess and V. Guarino and N. Hill and S. Magill and E. May and L. Nodulman and L. Price and J. Proudfoot and R. Stanek and D. Underwood and R. Wagner and B. Wicklund and G. Blanchot and M. Bosman and P. Casado and M. Cavalli-Sforza and I. Efthymiopoulos and Yu Ivanyushenkov and A. Juste and Ll Miralles and S. Orteu and C. Padilla and Perlas, \{J. A.\} and I. Riu and B. Ronceux and F. Teubert and R. Arsenescu and S. Constantinescu and C. Blaj and V. Boldea and S. Dita and M. Cobal and O. Gildemeister and M. Nessi and A. Henriques and L. Poggioli and P. Sonderegger and G. Karapetian and K. Anderson and E. Blucher and H. Evans and F. Merritt and J. Pilcher and H. Sanders and M. Shochet and F. Tang and A. Turcot and D. Wagner and Z. Ajaltouni and F. Badaud and N. Bouhemaid and P. Brette and M. Brassard and R. Chadelas and Chevaleyre, \{J. C.\} and M. Crouau and F. Daudon and Dugne, \{J. J.\} and B. Michel and G. Montarou and Muanza, \{G. S.\} and D. Pallin and H. Plothow-Besch and S. Poirot and G. Reinmuth and Says, \{L. P.\} and F. Vazeille and A. Astvatsaturov and O. Borisov and J. Budagov and I. Chirikov-Zorin and G. Chlachidze and V. Glagolev and S. Kakurin and V. Kolomoets and V. Kovtun and V. Kukhtin and A. Lebedev and I. Liba and O. Lomakina and Yu Lomakin and S. Malyukov and I. Minashvili and D. Pantea and O. Pukhov and V. Romanov and N. Russakovich and V. Senchishin and A. Semenov and A. Sissakian and A. Shchelchkov and V. Shevtsov and S. Studenov and S. Tokar and N. Topilin and V. Vinogradov and S. Vorozhtsov and G. Yarygin and F. Cogswell and R. Downing and D. Errede and S. Errede and M. Haney and V. Simaitis and J. Thaler and P. Amaral and A. Amorim and J. Carvalho and M. David and A. Gomes and A. Maio and Martins, \{J. P.\} and A. Onofre and H. Wolters and C. Bromberg and J. Huston and R. Miller and R. Richards and C. Yosef and A. Alifanov and A. Bogush and V. Golubev and V. Rumyantsev and Y. Kulchitsky and C. Angelini and D. Autiero and V. Cavasinni and D. Costanzo and \{De Santo\}, A. and \{Del Prete\}, T. and \{Di Girolamo\}, B. and V. Flaminio and S. Lami and C. Lazzeroni and E. Mazzoni and G. Renzoni and T. Davidek and J. Dolejsi and Z. Dolezal and R. Leitner and K. Soustruznik and M. Suk and P. Tas and Z. Trka and S. Valkar and M. Zdrazil and M. Lokajicek and S. Nemecek and A. Karyukhin and V. Klyukhin and Yu Khokhlov and S. Kopikov and M. Kostrikov and M. Kulagin and V. Lapin and Y. Protopopov and V. Sidorov and A. Solodkov and E. Starchenko and A. Surkov and A. Zaitsev and L. Caloba and M. Gaspar and F. Marroquin and A. Pereira and Seixas, \{J. M.\} and S. Berglund and C. Bohm and E. Johansson and S. Hellman and S. Holmgren and K. Jon-And and B. Sellden and S. Tardel and N. Yamdagni and A. Ferrer and Honor{\'e}, \{P. F.\} and F. Albiol and K. De and E. Gallas and J. Li and L. Sawyer and R. Stephens and M. Turcotte and A. White and H. Hakopian and V. Grabsky and E. Mnatsakanian and A. Vartapetian",

year = "1997",

month = feb,

doi = "10.1007/s002880050335",

language = "English",

volume = "73",

pages = "455--463",

journal = "Zeitschrift fur Physik C-Particles and Fields",

issn = "0170-9739",

publisher = "Springer Nature",

number = "3",

}

Berger, E, Blair, R, Dawson, J, Fuess, T, Guarino, V, Hill, N, Magill, S, May, E, Nodulman, L, Price, L, Proudfoot, J, Stanek, R, Underwood, D, Wagner, R, Wicklund, B, Blanchot, G, Bosman, M, Casado, P, Cavalli-Sforza, M, Efthymiopoulos, I, Ivanyushenkov, Y, Juste, A, Miralles, L, Orteu, S, Padilla, C, Perlas, JA, Riu, I, Ronceux, B, Teubert, F, Arsenescu, R, Constantinescu, S, Blaj, C, Boldea, V, Dita, S, Cobal, M, Gildemeister, O, Nessi, M, Henriques, A, Poggioli, L, Sonderegger, P, Karapetian, G, Anderson, K, Blucher, E, Evans, H, Merritt, F, Pilcher, J, Sanders, H, Shochet, M, Tang, F, Turcot, A, Wagner, D, Ajaltouni, Z, Badaud, F, Bouhemaid, N, Brette, P, Brassard, M, Chadelas, R, Chevaleyre, JC, Crouau, M, Daudon, F, Dugne, JJ, Michel, B, Montarou, G, Muanza, GS, Pallin, D, Plothow-Besch, H, Poirot, S, Reinmuth, G, Says, LP, Vazeille, F, Astvatsaturov, A, Borisov, O, Budagov, J, Chirikov-Zorin, I, Chlachidze, G, Glagolev, V, Kakurin, S, Kolomoets, V, Kovtun, V, Kukhtin, V, Lebedev, A, Liba, I, Lomakina, O, Lomakin, Y, Malyukov, S, Minashvili, I, Pantea, D, Pukhov, O, Romanov, V, Russakovich, N, Senchishin, V, Semenov, A, Sissakian, A, Shchelchkov, A, Shevtsov, V, Studenov, S, Tokar, S, Topilin, N, Vinogradov, V, Vorozhtsov, S, Yarygin, G, Cogswell, F, Downing, R, Errede, D, Errede, S, Haney, M, Simaitis, V, Thaler, J, Amaral, P, Amorim, A, Carvalho, J, David, M, Gomes, A, Maio, A, Martins, JP, Onofre, A, Wolters, H, Bromberg, C, Huston, J, Miller, R, Richards, R, Yosef, C, Alifanov, A, Bogush, A, Golubev, V, Rumyantsev, V, Kulchitsky, Y, Angelini, C, Autiero, D, Cavasinni, V, Costanzo, D, De Santo, A, Del Prete, T, Di Girolamo, B, Flaminio, V, Lami, S, Lazzeroni, C, Mazzoni, E, Renzoni, G, Davidek, T, Dolejsi, J, Dolezal, Z, Leitner, R, Soustruznik, K, Suk, M, Tas, P, Trka, Z, Valkar, S, Zdrazil, M, Lokajicek, M, Nemecek, S, Karyukhin, A, Klyukhin, V, Khokhlov, Y, Kopikov, S, Kostrikov, M, Kulagin, M, Lapin, V, Protopopov, Y, Sidorov, V, Solodkov, A, Starchenko, E, Surkov, A, Zaitsev, A, Caloba, L, Gaspar, M, Marroquin, F, Pereira, A, Seixas, JM, Berglund, S, Bohm, C, Johansson, E, Hellman, S, Holmgren, S, Jon-And, K, Sellden, B, Tardel, S, Yamdagni, N, Ferrer, A, Honoré, PF, Albiol, F, De, K, Gallas, E, Li, J, Sawyer, L, Stephens, R, Turcotte, M, White, A, Hakopian, H, Grabsky, V, Mnatsakanian, E & Vartapetian, A 1997, 'A measurement of the energy loss spectrum of 150 GeV muons in iron', Zeitschrift fur Physik C-Particles and Fields, vol. 73, no. 3, pp. 455-463. https://doi.org/10.1007/s002880050335

TY - JOUR

T1 - A measurement of the energy loss spectrum of 150 GeV muons in iron

AU - Berger, E.

AU - Blair, R.

AU - Dawson, J.

AU - Fuess, T.

AU - Guarino, V.

AU - Hill, N.

AU - Magill, S.

AU - May, E.

AU - Nodulman, L.

AU - Price, L.

AU - Proudfoot, J.

AU - Stanek, R.

AU - Underwood, D.

AU - Wagner, R.

AU - Wicklund, B.

AU - Blanchot, G.

AU - Bosman, M.

AU - Casado, P.

AU - Cavalli-Sforza, M.

AU - Efthymiopoulos, I.

AU - Ivanyushenkov, Yu

AU - Juste, A.

AU - Miralles, Ll

AU - Orteu, S.

AU - Padilla, C.

AU - Perlas, J. A.

AU - Riu, I.

AU - Ronceux, B.

AU - Teubert, F.

AU - Arsenescu, R.

AU - Constantinescu, S.

AU - Blaj, C.

AU - Boldea, V.

AU - Dita, S.

AU - Cobal, M.

AU - Gildemeister, O.

AU - Nessi, M.

AU - Henriques, A.

AU - Poggioli, L.

AU - Sonderegger, P.

AU - Karapetian, G.

AU - Anderson, K.

AU - Blucher, E.

AU - Evans, H.

AU - Merritt, F.

AU - Pilcher, J.

AU - Sanders, H.

AU - Shochet, M.

AU - Tang, F.

AU - Turcot, A.

AU - Wagner, D.

AU - Ajaltouni, Z.

AU - Badaud, F.

AU - Bouhemaid, N.

AU - Brette, P.

AU - Brassard, M.

AU - Chadelas, R.

AU - Chevaleyre, J. C.

AU - Crouau, M.

AU - Daudon, F.

AU - Dugne, J. J.

AU - Michel, B.

AU - Montarou, G.

AU - Muanza, G. S.

AU - Pallin, D.

AU - Plothow-Besch, H.

AU - Poirot, S.

AU - Reinmuth, G.

AU - Says, L. P.

AU - Vazeille, F.

AU - Astvatsaturov, A.

AU - Borisov, O.

AU - Budagov, J.

AU - Chirikov-Zorin, I.

AU - Chlachidze, G.

AU - Glagolev, V.

AU - Kakurin, S.

AU - Kolomoets, V.

AU - Kovtun, V.

AU - Kukhtin, V.

AU - Lebedev, A.

AU - Liba, I.

AU - Lomakina, O.

AU - Lomakin, Yu

AU - Malyukov, S.

AU - Minashvili, I.

AU - Pantea, D.

AU - Pukhov, O.

AU - Romanov, V.

AU - Russakovich, N.

AU - Senchishin, V.

AU - Semenov, A.

AU - Sissakian, A.

AU - Shchelchkov, A.

AU - Shevtsov, V.

AU - Studenov, S.

AU - Tokar, S.

AU - Topilin, N.

AU - Vinogradov, V.

AU - Vorozhtsov, S.

AU - Yarygin, G.

AU - Cogswell, F.

AU - Downing, R.

AU - Errede, D.

AU - Errede, S.

AU - Haney, M.

AU - Simaitis, V.

AU - Thaler, J.

AU - Amaral, P.

AU - Amorim, A.

AU - Carvalho, J.

AU - David, M.

AU - Gomes, A.

AU - Maio, A.

AU - Martins, J. P.

AU - Onofre, A.

AU - Wolters, H.

AU - Bromberg, C.

AU - Huston, J.

AU - Miller, R.

AU - Richards, R.

AU - Yosef, C.

AU - Alifanov, A.

AU - Bogush, A.

AU - Golubev, V.

AU - Rumyantsev, V.

AU - Kulchitsky, Y.

AU - Angelini, C.

AU - Autiero, D.

AU - Cavasinni, V.

AU - Costanzo, D.

AU - De Santo, A.

AU - Del Prete, T.

AU - Di Girolamo, B.

AU - Flaminio, V.

AU - Lami, S.

AU - Lazzeroni, C.

AU - Mazzoni, E.

AU - Renzoni, G.

AU - Davidek, T.

AU - Dolejsi, J.

AU - Dolezal, Z.

AU - Leitner, R.

AU - Soustruznik, K.

AU - Suk, M.

AU - Tas, P.

AU - Trka, Z.

AU - Valkar, S.

AU - Zdrazil, M.

AU - Lokajicek, M.

AU - Nemecek, S.

AU - Karyukhin, A.

AU - Klyukhin, V.

AU - Khokhlov, Yu

AU - Kopikov, S.

AU - Kostrikov, M.

AU - Kulagin, M.

AU - Lapin, V.

AU - Protopopov, Y.

AU - Sidorov, V.

AU - Solodkov, A.

AU - Starchenko, E.

AU - Surkov, A.

AU - Zaitsev, A.

AU - Caloba, L.

AU - Gaspar, M.

AU - Marroquin, F.

AU - Pereira, A.

AU - Seixas, J. M.

AU - Berglund, S.

AU - Bohm, C.

AU - Johansson, E.

AU - Hellman, S.

AU - Holmgren, S.

AU - Jon-And, K.

AU - Sellden, B.

AU - Tardel, S.

AU - Yamdagni, N.

AU - Ferrer, A.

AU - Honoré, P. F.

AU - Albiol, F.

AU - De, K.

AU - Gallas, E.

AU - Li, J.

AU - Sawyer, L.

AU - Stephens, R.

AU - Turcotte, M.

AU - White, A.

AU - Hakopian, H.

AU - Grabsky, V.

AU - Mnatsakanian, E.

AU - Vartapetian, A.

PY - 1997/2

Y1 - 1997/2

N2 - The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability dP/dυ per radiation length of a fractional energy loss υ = ΔEμ/Eμ has been measured in the range υ = 0.01 ÷ 0.95; it is compared with the theoretical predictions for energy losses due to bremsstrahlung and production of electron-positron pairs or of energetic knock-on electrons. The integrated probability ∫0.010.95(dP/dυ)dυ is (1.610 ± 0.015stat ±0 .105syst)·10-3 in agreement with the theoretical predictions 1.556·10-3 and 1.619·10-3. Agreement with theory is also found in two intervals of υ where production of electron-positron pairs and knock-on electrons dominates. In the region of bremsstrahlung dominance (υ = 0.12 ÷ 0.95) the measured integrated probability (1.160 ± 0.040stat ± 0.075syst)·10-4 is in agreement with the theoretical value of 1.185·10-4, obtained using the Petrukhin and Shestakov description of the bremsstrahlung process. The same result is about 3.6 standard deviations (defined as the quadratic sum of statistical and systematic errors) lower than the theoretical prediction of 1.472·10-4, obtained using Tsai's description of bremsstrahlung.

AB - The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability dP/dυ per radiation length of a fractional energy loss υ = ΔEμ/Eμ has been measured in the range υ = 0.01 ÷ 0.95; it is compared with the theoretical predictions for energy losses due to bremsstrahlung and production of electron-positron pairs or of energetic knock-on electrons. The integrated probability ∫0.010.95(dP/dυ)dυ is (1.610 ± 0.015stat ±0 .105syst)·10-3 in agreement with the theoretical predictions 1.556·10-3 and 1.619·10-3. Agreement with theory is also found in two intervals of υ where production of electron-positron pairs and knock-on electrons dominates. In the region of bremsstrahlung dominance (υ = 0.12 ÷ 0.95) the measured integrated probability (1.160 ± 0.040stat ± 0.075syst)·10-4 is in agreement with the theoretical value of 1.185·10-4, obtained using the Petrukhin and Shestakov description of the bremsstrahlung process. The same result is about 3.6 standard deviations (defined as the quadratic sum of statistical and systematic errors) lower than the theoretical prediction of 1.472·10-4, obtained using Tsai's description of bremsstrahlung.

UR - https://www.scopus.com/pages/publications/0037612694

U2 - 10.1007/s002880050335

DO - 10.1007/s002880050335

M3 - Article

AN - SCOPUS:0037612694

SN - 0170-9739

VL - 73

SP - 455

EP - 463

JO - Zeitschrift fur Physik C-Particles and Fields

JF - Zeitschrift fur Physik C-Particles and Fields

IS - 3

ER -

A measurement of the energy loss spectrum of 150 GeV muons in iron

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