Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$
Adolph C, Akhunzyanov R, Alekseev MG, Alexeev GD, Amoroso A, Andrieux V, Anosov V, Austregesilo A, Badelek B, Balestra F, Barth J, et al. (2014)
The European Physical Journal A 50(4): 79.
Zeitschriftenaufsatz
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Autor*in
Adolph, C.;
Akhunzyanov, R.;
Alekseev, M. G.;
Alexeev, G. D.;
Amoroso, A.;
Andrieux, V.;
Anosov, V.;
Austregesilo, A.;
Badelek, B.;
Balestra, F.;
Barth, J.;
Baum, GünterUniBi
Alle
Alle
Einrichtung
Abstract / Bemerkung
The COMPASS Collaboration at CERN has investigated the reaction $\pi^- \gamma\rightarrow \pi^-\pi^-\pi^+$ embedded in the Primakoff reaction of$190~\textrm{GeV}$ pions scattering in the Coulomb field of a lead target,$\pi^- \text{Pb} \rightarrow \pi^-\pi^-\pi^+ \text{Pb}$. Exchange of quasi-realphotons is selected by isolating the sharp Coulomb peak observed at momentumtransfer below $0.001~(\text{GeV}/c)^2$. Using a partial-wave analysis theamplitudes and relative phases of the $a_2(1320)$ and $\pi_2(1670)$ mesons havebeen extracted, and the Coulomb and the diffractive contributions have beendisentangled. Measuring absolute production cross sections we have determinedthe radiative width of the $a_2(1320)$ to be $\Gamma_0(a_2(1320) \rightarrow\pi\gamma) = (358 \pm 6_{\textrm{stat}} \pm 42_{\textrm{syst}})~\textrm{keV}$.As the first measurement, $\Gamma_0(\pi_2(1670) \rightarrow \pi\gamma) = (181\pm 11_{\textrm{stat}} \pm 27_{\textrm{syst}})~\textrm{keV} \cdot(\textrm{BR}^{\textrm{PDG}}_{f_2 \pi}/\textrm{BR}_{f_2 \pi})$ is obtained forthe radiative width of the $\pi_2(1670)$, where in this analysis the branchingratio $\textrm{BR}^{\textrm{PDG}}_{f_2 \pi}=0.56$ has been used. We comparethese values to previous measurements and theoretical predictions.
Erscheinungsjahr
2014
Zeitschriftentitel
The European Physical Journal A
Band
50
Ausgabe
4
Art.-Nr.
79
ISSN
1434-6001
eISSN
1434-601X
Page URI
https://pub.uni-bielefeld.de/record/2671998
Zitieren
Adolph C, Akhunzyanov R, Alekseev MG, et al. Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$. The European Physical Journal A. 2014;50(4): 79.
Adolph, C., Akhunzyanov, R., Alekseev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., et al. (2014). Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$. The European Physical Journal A, 50(4), 79. doi:10.1140/epja/i2014-14079-8
Adolph, C., Akhunzyanov, R., Alekseev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., et al. 2014. “Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$”. The European Physical Journal A 50 (4): 79.
Adolph, C., Akhunzyanov, R., Alekseev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badelek, B., Balestra, F., et al. (2014). Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$. The European Physical Journal A 50:79.
Adolph, C., et al., 2014. Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$. The European Physical Journal A, 50(4): 79.
C. Adolph, et al., “Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$”, The European Physical Journal A, vol. 50, 2014, : 79.
Adolph, C., Akhunzyanov, R., Alekseev, M.G., Alexeev, G.D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badelek, B., Balestra, F., Barth, J., Baum, G., Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S.U., Cicuttin, A., Crespo, M.L., Curiel, Q., Torre, S.D., Dasgupta, S.S., Dasgupta, S., Denisov, O.Y., Donskov, S.V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P.D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Finger~jr., M., Fischer, H., Franco, C., du~Fresne~von~Hohenesche, N., Friedrich, J.M., Frolov, V., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Geyer, R., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmueller, S., Grasso, A., Grube, B., Guskov, A., Guthoerl, T., Haas, F., Harrach, D. von, Hahne, D., Hashimoto, R., Heinsius, F.H., Herrmann, F., Hinterberger, F., Hoeppner, C., Horikawa, N., d'Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Y., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Joerg, P., Joosten, R., Kabuss, E., Ketzer, B., Khaustov, G.V., Khokhlov, Y.A., Kisselev, Y., Klein, F., Klimaszewski, K., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O., Kral, Z., Kraemer, M., Kroumchtein, Z.V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R.P., Lednev, A.A., Lehmann, A., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G.K., Marchand, C., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Y.V., Miyachi, Y., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V.I., Novy, J., Nowak, W.-D., Nunes, A.S., Orlov, I., Olshevsky, A.G., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pesek, M., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Reicherz, G., Rocco, E., Rychter, A., Rossiyskaya, N.S., Ryabchikov, D.I., Samoylenko, V.D., Sandacz, A., Sarkar, S., Savin, I.A., Sbrizzai, G., Schiavon, P., Schill, C., Schlueter, T., Schmidt, A., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Schott, M., Shevchenko, O.Y., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., ter~Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Vandenbroucke, M., Virius, M., Vondra, J., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki., M.: Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$. The European Physical Journal A. 50, : 79 (2014).
Adolph, C., Akhunzyanov, R., Alekseev, M. G., Alexeev, G. D., Amoroso, A., Andrieux, V., Anosov, V., Austregesilo, A., Badelek, B., Balestra, F., Barth, J., Baum, Günter, Beck, R., Bedfer, Y., Berlin, A., Bernhard, J., Bicker, K., Bieling, J., Birsa, R., Bisplinghoff, J., Bodlak, M., Boer, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Buechele, M., Burtin, E., Capozza, L., Chiosso, M., Chung, S. U., Cicuttin, A., Crespo, M. L., Curiel, Q., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Denisov, O. Yu., Donskov, S. V., Doshita, N., Duic, V., Duennweber, W., Dziewiecki, M., Efremov, A., Elia, C., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Filin, A., Finger, M., Finger~jr., M., Fischer, H., Franco, C., du~Fresne~von~Hohenesche, N., Friedrich, J. M., Frolov, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Geyer, R., Gnesi, I., Gobbo, B., Goertz, S., Gorzellik, M., Grabmueller, S., Grasso, A., Grube, B., Guskov, A., Guthoerl, T., Haas, F., Harrach, D. von, Hahne, D., Hashimoto, R., Heinsius, F. H., Herrmann, F., Hinterberger, F., Hoeppner, Ch., Horikawa, N., d'Hose, N., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jahn, R., Jary, V., Jasinski, P., Joerg, P., Joosten, R., Kabuss, E., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Koenigsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O., Kral, Z., Kraemer, M., Kroumchtein, Z. V., Kuchinski, N., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levorato, S., Lichtenstadt, J., Maggiora, A., Magnon, A., Makke, N., Mallot, G. K., Marchand, C., Martin, A., Marzec, J., Matousek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G., Meyer, W., Michigami, T., Mikhailov, Yu. V., Miyachi, Y., Nagaytsev, A., Nagel, T., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Novy, J., Nowak, W. -D., Nunes, A. S., Orlov, I., Olshevsky, A. G., Ostrick, M., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pesek, M., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Reicherz, G., Rocco, E., Rychter, A., Rossiyskaya, N. S., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Sarkar, S., Savin, I. A., Sbrizzai, G., Schiavon, P., Schill, C., Schlueter, T., Schmidt, A., Schmidt, K., Schmieden, H., Schoenning, K., Schopferer, S., Schott, M., Shevchenko, O. Yu., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Sosio, S., Sozzi, F., Srnka, A., Steiger, L., Stolarski, M., Sulc, M., Sulej, R., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., ter~Wolbeek, J., Tessaro, S., Tessarotto, F., Thibaud, F., Uhl, S., Uman, I., Vandenbroucke, M., Virius, M., Vondra, J., Wang, L., Weisrock, T., Wilfert, M., Windmolders, R., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., and Ziembicki., M. “Measurement of radiative widths of $a_2(1320)$ and $π_2(1670)$”. The European Physical Journal A 50.4 (2014): 79.
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