First measurement of chiral dynamics in π -γ→π-π-π+

C. Adolph; M. G. Alekseev; V. Yu Alexakhin; Yu Alexandrov; G. D. Alexeev; A. Amoroso; A. A. Antonov; A. Austregesilo; B. Badełek; F. Balestra; J. Barth; G. Baum; Y. Bedfer; J. Bernhard; R. Bertini; M. Bettinelli; K. A. Bicker; R. Birsa; J. Bisplinghoff; P. Bordalo; F. Bradamante; C. Braun; A. Bravar; A. Bressan; E. Burtin; D. Chaberny; M. Chiosso; S. U. Chung; A. Cicuttin; M. L. Crespo; S. Dalla Torre; S. Das; S. S. Dasgupta; O. Yu Denisov; L. Dhara; S. V. Donskov; N. Doshita; V. Duic; W. Dünnweber; M. Dziewiecki; A. Efremov; C. Elia; P. D. Eversheim; W. Eyrich; M. Faessler; A. Ferrero; A. Filin; M. Finger; M. Finger; H. Fischer; C. Franco; N. Du Fresne Von Hohenesche; J. M. Friedrich; R. Garfagnini; F. Gautheron; O. P. Gavrichtchouk; R. Gazda; S. Gerassimov; R. Geyer; M. Giorgi; I. Gnesi; B. Gobbo; S. Goertz; S. Grabmüller; A. Grasso; B. Grube; R. Gushterski; A. Guskov; F. Haas; D. Von Harrach; T. Hasegawa; F. H. Heinsius; F. Herrmann; C. Hess; F. Hinterberger; N. Horikawa; Ch Höppner; N. D'Hose; S. Huber; S. Ishimoto; O. Ivanov; Yu Ivanshin; T. Iwata; R. Jahn; P. Jasinski; G. Jegou; R. Joosten; E. Kabuss; D. Kang; B. Ketzer; G. V. Khaustov; Yu A. Khokhlov; Yu Kisselev; F. Klein; K. Klimaszewski; S. Koblitz; J. H. Koivuniemi; V. N. Kolosov; K. Kondo; K. Königsmann; I. Konorov; V. F. Konstantinov; A. Korzenev; A. M. Kotzinian; O. Kouznetsov; M. Krämer; Z. V. Kroumchtein; F. Kunne; K. Kurek; L. Lauser; A. A. Lednev; A. Lehmann; S. Levorato; J. Lichtenstadt; A. Maggiora; A. Magnon; N. Makke; G. K. Mallot; A. Mann; C. Marchand; A. Martin; J. Marzec; F. Massmann; T. Matsuda; W. Meyer; T. Michigami; Yu V. Mikhailov; M. A. Moinester; A. Morreale; A. Mutter; A. Nagaytsev; T. Nagel; F. Nerling; S. Neubert; D. Neyret; V. I. Nikolaenko; W. D. Nowak; A. S. Nunes; A. G. Olshevsky; M. Ostrick; A. Padee; R. Panknin; D. Panzieri; B. Parsamyan; S. Paul; E. Perevalova; G. Pesaro; D. V. Peshekhonov; G. Piragino; S. Platchkov; J. Pochodzalla; J. Polak; V. A. Polyakov; G. Pontecorvo; J. Pretz; C. Quintans; J. F. Rajotte; S. Ramos; V. Rapatsky; G. Reicherz; A. Richter; E. Rocco; E. Rondio; N. S. Rossiyskaya; D. I. Ryabchikov; V. D. Samoylenko; A. Sandacz; M. G. Sapozhnikov; S. Sarkar; I. A. Savin; G. Sbrizzai; P. Schiavon; C. Schill; T. Schlüter; L. Schmitt; K. Schönning; S. Schopferer; W. Schröder; O. Yu Shevchenko; H. W. Siebert; L. Silva; L. Sinha; A. N. Sissakian; M. Slunecka; G. I. Smirnov; S. Sosio; F. Sozzi; A. Srnka; M. Stolarski; M. Sulc; R. Sulej; P. Sznajder; S. Takekawa; J. Ter Wolbeek; S. Tessaro; F. Tessarotto; A. Teufel; L. G. Tkatchev; S. Uhl; I. Uman; M. Vandenbroucke; M. Virius; N. V. Vlassov; R. Windmolders; W. Wiślicki; H. Wollny; K. Zaremba; M. Zavertyaev; E. Zemlyanichkina; M. Ziembicki; N. Zhuravlev; A. Zvyagin

doi:10.1103/PhysRevLett.108.192001

First measurement of chiral dynamics in π ^-γ→π^-π^-π⁺

C. Adolph^*, M. G. Alekseev, V. Yu Alexakhin, Yu Alexandrov, G. D. Alexeev, A. Amoroso, A. A. Antonov, A. Austregesilo, B. Badełek, F. Balestra, J. Barth, G. Baum, Y. Bedfer, J. Bernhard, R. Bertini, M. Bettinelli, K. A. Bicker, R. Birsa, J. Bisplinghoff, P. BordaloF. Bradamante, C. Braun, A. Bravar, A. Bressan, E. Burtin, D. Chaberny, M. Chiosso, S. U. Chung, A. Cicuttin, M. L. Crespo, S. Dalla Torre, S. Das, S. S. Dasgupta, O. Yu Denisov, L. Dhara, S. V. Donskov, N. Doshita, V. Duic, W. Dünnweber, M. Dziewiecki, A. Efremov, C. Elia, P. D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, A. Filin, M. Finger, M. Finger, H. Fischer, C. Franco, N. Du Fresne Von Hohenesche, J. M. Friedrich, R. Garfagnini, F. Gautheron, O. P. Gavrichtchouk, R. Gazda, S. Gerassimov, R. Geyer, M. Giorgi, I. Gnesi, B. Gobbo, S. Goertz, S. Grabmüller, A. Grasso, B. Grube, R. Gushterski, A. Guskov, F. Haas, D. Von Harrach, T. Hasegawa, F. H. Heinsius, F. Herrmann, C. Hess, F. Hinterberger, N. Horikawa, Ch Höppner, N. D'Hose, S. Huber, S. Ishimoto, O. Ivanov, Yu Ivanshin, T. Iwata, R. Jahn, P. Jasinski, G. Jegou, R. Joosten, E. Kabuss, D. Kang, B. Ketzer, G. V. Khaustov, Yu A. Khokhlov, Yu Kisselev, F. Klein, K. Klimaszewski, S. Koblitz, J. H. Koivuniemi, V. N. Kolosov, K. Kondo, K. Königsmann, I. Konorov, V. F. Konstantinov, A. Korzenev, A. M. Kotzinian, O. Kouznetsov, M. Krämer, Z. V. Kroumchtein, F. Kunne, K. Kurek, L. Lauser, A. A. Lednev, A. Lehmann, S. Levorato, J. Lichtenstadt, A. Maggiora, A. Magnon, N. Makke, G. K. Mallot, A. Mann, C. Marchand, A. Martin, J. Marzec, F. Massmann, T. Matsuda, W. Meyer, T. Michigami, Yu V. Mikhailov, M. A. Moinester, A. Morreale, A. Mutter, A. Nagaytsev, T. Nagel, F. Nerling, S. Neubert, D. Neyret, V. I. Nikolaenko, W. D. Nowak, A. S. Nunes, A. G. Olshevsky, M. Ostrick, A. Padee, R. Panknin, D. Panzieri, B. Parsamyan, S. Paul, E. Perevalova, G. Pesaro, D. V. Peshekhonov, G. Piragino, S. Platchkov, J. Pochodzalla, J. Polak, V. A. Polyakov, G. Pontecorvo, J. Pretz, C. Quintans, J. F. Rajotte, S. Ramos, V. Rapatsky, G. Reicherz, A. Richter, E. Rocco, E. Rondio, N. S. Rossiyskaya, D. I. Ryabchikov, V. D. Samoylenko, A. Sandacz, M. G. Sapozhnikov, S. Sarkar, I. A. Savin, G. Sbrizzai, P. Schiavon, C. Schill, T. Schlüter, L. Schmitt, K. Schönning, S. Schopferer, W. Schröder, O. Yu Shevchenko, H. W. Siebert, L. Silva, L. Sinha, A. N. Sissakian, M. Slunecka, G. I. Smirnov, S. Sosio, F. Sozzi, A. Srnka, M. Stolarski, M. Sulc, R. Sulej, P. Sznajder, S. Takekawa, J. Ter Wolbeek, S. Tessaro, F. Tessarotto, A. Teufel, L. G. Tkatchev, S. Uhl, I. Uman, M. Vandenbroucke, M. Virius, N. V. Vlassov, R. Windmolders, W. Wiślicki, H. Wollny, K. Zaremba, M. Zavertyaev, E. Zemlyanichkina, M. Ziembicki, N. Zhuravlev, A. Zvyagin

^*Corresponding author for this work

School of Physics and Astronomy

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

18 Scopus citations

Abstract

The COMPASS Collaboration at CERN has investigated the π ^-γ→π^-π^-π⁺ reaction at center-of-momentum energy below five pion masses, √s<5m_π, embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t ^′<0.001GeV2/c2. Using partial-wave analysis techniques, the scattering intensity of Coulomb production described in terms of chiral dynamics and its dependence on the 3π-invariant mass m_3π=√s were extracted. The absolute cross section was determined in seven bins of √s with an overall precision of 20%. At leading order, the result is found to be in good agreement with the prediction of chiral perturbation theory over the whole energy range investigated.

Original language	English
Article number	192001
Journal	Physical Review Letters
Volume	108
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.108.192001
State	Published - 11 May 2012

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10.1103/PhysRevLett.108.192001

Cite this

Adolph, C., Alekseev, M. G., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Antonov, A. A., Austregesilo, A., Badełek, B., Balestra, F., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Bicker, K. A., Birsa, R., Bisplinghoff, J., ... Zvyagin, A. (2012). First measurement of chiral dynamics in π ^-γ→π^-π^-π⁺. Physical Review Letters, 108(19), Article 192001. https://doi.org/10.1103/PhysRevLett.108.192001

@article{cb4c686423e4486396421e8c1736463f,

title = "First measurement of chiral dynamics in π -γ→π-π-π+",

abstract = "The COMPASS Collaboration at CERN has investigated the π -γ→π-π-π+ reaction at center-of-momentum energy below five pion masses, √s<5mπ, embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t ′<0.001GeV2/c2. Using partial-wave analysis techniques, the scattering intensity of Coulomb production described in terms of chiral dynamics and its dependence on the 3π-invariant mass m3π=√s were extracted. The absolute cross section was determined in seven bins of √s with an overall precision of 20%. At leading order, the result is found to be in good agreement with the prediction of chiral perturbation theory over the whole energy range investigated.",

author = "C. Adolph and Alekseev, {M. G.} and Alexakhin, {V. Yu} and Yu Alexandrov and Alexeev, {G. D.} and A. Amoroso and Antonov, {A. A.} and A. Austregesilo and B. Bade{\l}ek and F. Balestra and J. Barth and G. Baum and Y. Bedfer and J. Bernhard and R. Bertini and M. Bettinelli and Bicker, {K. A.} and R. Birsa and J. Bisplinghoff and P. Bordalo and F. Bradamante and C. Braun and A. Bravar and A. Bressan and E. Burtin and D. Chaberny and M. Chiosso and Chung, {S. U.} and A. Cicuttin and Crespo, {M. L.} and {Dalla Torre}, S. and S. Das and Dasgupta, {S. S.} and Denisov, {O. Yu} and L. Dhara and Donskov, {S. V.} and N. Doshita and V. Duic and W. D{\"u}nnweber and M. Dziewiecki and A. Efremov and C. Elia and Eversheim, {P. D.} and W. Eyrich and M. Faessler and A. Ferrero and A. Filin and M. Finger and M. Finger and H. Fischer and C. Franco and {Du Fresne Von Hohenesche}, N. and Friedrich, {J. M.} and R. Garfagnini and F. Gautheron and Gavrichtchouk, {O. P.} and R. Gazda and S. Gerassimov and R. Geyer and M. Giorgi and I. Gnesi and B. Gobbo and S. Goertz and S. Grabm{\"u}ller and A. Grasso and B. Grube and R. Gushterski and A. Guskov and F. Haas and {Von Harrach}, D. and T. Hasegawa and Heinsius, {F. H.} and F. Herrmann and C. Hess and F. Hinterberger and N. Horikawa and Ch H{\"o}ppner and N. D'Hose and S. Huber and S. Ishimoto and O. Ivanov and Yu Ivanshin and T. Iwata and R. Jahn and P. Jasinski and G. Jegou and R. Joosten and E. Kabuss and D. Kang and B. Ketzer and Khaustov, {G. V.} and Khokhlov, {Yu A.} and Yu Kisselev and F. Klein and K. Klimaszewski and S. Koblitz and Koivuniemi, {J. H.} and Kolosov, {V. N.} and K. Kondo and K. K{\"o}nigsmann and I. Konorov and Konstantinov, {V. F.} and A. Korzenev and Kotzinian, {A. M.} and O. Kouznetsov and M. Kr{\"a}mer and Kroumchtein, {Z. V.} and F. Kunne and K. Kurek and L. Lauser and Lednev, {A. A.} and A. Lehmann and S. Levorato and J. Lichtenstadt and A. Maggiora and A. Magnon and N. Makke and Mallot, {G. K.} and A. Mann and C. Marchand and A. Martin and J. Marzec and F. Massmann and T. Matsuda and W. Meyer and T. Michigami and Mikhailov, {Yu V.} and Moinester, {M. A.} and A. Morreale and A. Mutter and A. Nagaytsev and T. Nagel and F. Nerling and S. Neubert and D. Neyret and Nikolaenko, {V. I.} and Nowak, {W. D.} and Nunes, {A. S.} and Olshevsky, {A. G.} and M. Ostrick and A. Padee and R. Panknin and D. Panzieri and B. Parsamyan and S. Paul and E. Perevalova and G. Pesaro and Peshekhonov, {D. V.} and G. Piragino and S. Platchkov and J. Pochodzalla and J. Polak and Polyakov, {V. A.} and G. Pontecorvo and J. Pretz and C. Quintans and Rajotte, {J. F.} and S. Ramos and V. Rapatsky and G. Reicherz and A. Richter and E. Rocco and E. Rondio and Rossiyskaya, {N. S.} and Ryabchikov, {D. I.} and Samoylenko, {V. D.} and A. Sandacz and Sapozhnikov, {M. G.} and S. Sarkar and Savin, {I. A.} and G. Sbrizzai and P. Schiavon and C. Schill and T. Schl{\"u}ter and L. Schmitt and K. Sch{\"o}nning and S. Schopferer and W. Schr{\"o}der and Shevchenko, {O. Yu} and Siebert, {H. W.} and L. Silva and L. Sinha and Sissakian, {A. N.} and M. Slunecka and Smirnov, {G. I.} and S. Sosio and F. Sozzi and A. Srnka and M. Stolarski and M. Sulc and R. Sulej and P. Sznajder and S. Takekawa and {Ter Wolbeek}, J. and S. Tessaro and F. Tessarotto and A. Teufel and Tkatchev, {L. G.} and S. Uhl and I. Uman and M. Vandenbroucke and M. Virius and Vlassov, {N. V.} and R. Windmolders and W. Wi{\'s}licki and H. Wollny and K. Zaremba and M. Zavertyaev and E. Zemlyanichkina and M. Ziembicki and N. Zhuravlev and A. Zvyagin",

note = "Funding Information: In the original published version of the article, Valerie Vancollie was mistakenly omitted from the list of members of the International Mouse Phenotyping Consortium. In addition, recognition of funding from Wellcome Trust grant WT098051 was mistakenly omitted from the Acknowledgements. The errors have been corrected in both the PDF and HTML versions of the paper.",

year = "2012",

month = may,

day = "11",

doi = "10.1103/PhysRevLett.108.192001",

language = "אנגלית",

volume = "108",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "19",

}

Adolph, C, Alekseev, MG, Alexakhin, VY, Alexandrov, Y, Alexeev, GD, Amoroso, A, Antonov, AA, Austregesilo, A, Badełek, B, Balestra, F, Barth, J, Baum, G, Bedfer, Y, Bernhard, J, Bertini, R, Bettinelli, M, Bicker, KA, Birsa, R, Bisplinghoff, J, Bordalo, P, Bradamante, F, Braun, C, Bravar, A, Bressan, A, Burtin, E, Chaberny, D, Chiosso, M, Chung, SU, Cicuttin, A, Crespo, ML, Dalla Torre, S, Das, S, Dasgupta, SS, Denisov, OY, Dhara, L, Donskov, SV, Doshita, N, Duic, V, Dünnweber, W, Dziewiecki, M, Efremov, A, Elia, C, Eversheim, PD, Eyrich, W, Faessler, M, Ferrero, A, Filin, A, Finger, M, Finger, M, Fischer, H, Franco, C, Du Fresne Von Hohenesche, N, Friedrich, JM, Garfagnini, R, Gautheron, F, Gavrichtchouk, OP, Gazda, R, Gerassimov, S, Geyer, R, Giorgi, M, Gnesi, I, Gobbo, B, Goertz, S, Grabmüller, S, Grasso, A, Grube, B, Gushterski, R, Guskov, A, Haas, F, Von Harrach, D, Hasegawa, T, Heinsius, FH, Herrmann, F, Hess, C, Hinterberger, F, Horikawa, N, Höppner, C, D'Hose, N, Huber, S, Ishimoto, S, Ivanov, O, Ivanshin, Y, Iwata, T, Jahn, R, Jasinski, P, Jegou, G, Joosten, R, Kabuss, E, Kang, D, Ketzer, B, Khaustov, GV, Khokhlov, YA, Kisselev, Y, Klein, F, Klimaszewski, K, Koblitz, S, Koivuniemi, JH, Kolosov, VN, Kondo, K, Königsmann, K, Konorov, I, Konstantinov, VF, Korzenev, A, Kotzinian, AM, Kouznetsov, O, Krämer, M, Kroumchtein, ZV, Kunne, F, Kurek, K, Lauser, L, Lednev, AA, Lehmann, A, Levorato, S, Lichtenstadt, J, Maggiora, A, Magnon, A, Makke, N, Mallot, GK, Mann, A, Marchand, C, Martin, A, Marzec, J, Massmann, F, Matsuda, T, Meyer, W, Michigami, T, Mikhailov, YV, Moinester, MA, Morreale, A, Mutter, A, Nagaytsev, A, Nagel, T, Nerling, F, Neubert, S, Neyret, D, Nikolaenko, VI, Nowak, WD, Nunes, AS, Olshevsky, AG, Ostrick, M, Padee, A, Panknin, R, Panzieri, D, Parsamyan, B, Paul, S, Perevalova, E, Pesaro, G, Peshekhonov, DV, Piragino, G, Platchkov, S, Pochodzalla, J, Polak, J, Polyakov, VA, Pontecorvo, G, Pretz, J, Quintans, C, Rajotte, JF, Ramos, S, Rapatsky, V, Reicherz, G, Richter, A, Rocco, E, Rondio, E, Rossiyskaya, NS, Ryabchikov, DI, Samoylenko, VD, Sandacz, A, Sapozhnikov, MG, Sarkar, S, Savin, IA, Sbrizzai, G, Schiavon, P, Schill, C, Schlüter, T, Schmitt, L, Schönning, K, Schopferer, S, Schröder, W, Shevchenko, OY, Siebert, HW, Silva, L, Sinha, L, Sissakian, AN, Slunecka, M, Smirnov, GI, Sosio, S, Sozzi, F, Srnka, A, Stolarski, M, Sulc, M, Sulej, R, Sznajder, P, Takekawa, S, Ter Wolbeek, J, Tessaro, S, Tessarotto, F, Teufel, A, Tkatchev, LG, Uhl, S, Uman, I, Vandenbroucke, M, Virius, M, Vlassov, NV, Windmolders, R, Wiślicki, W, Wollny, H, Zaremba, K, Zavertyaev, M, Zemlyanichkina, E, Ziembicki, M, Zhuravlev, N & Zvyagin, A 2012, 'First measurement of chiral dynamics in π ^-γ→π^-π^-π⁺', Physical Review Letters, vol. 108, no. 19, 192001. https://doi.org/10.1103/PhysRevLett.108.192001

TY - JOUR

T1 - First measurement of chiral dynamics in π -γ→π-π-π+

AU - Adolph, C.

AU - Alekseev, M. G.

AU - Alexakhin, V. Yu

AU - Alexandrov, Yu

AU - Alexeev, G. D.

AU - Amoroso, A.

AU - Antonov, A. A.

AU - Austregesilo, A.

AU - Badełek, B.

AU - Balestra, F.

AU - Barth, J.

AU - Baum, G.

AU - Bedfer, Y.

AU - Bernhard, J.

AU - Bertini, R.

AU - Bettinelli, M.

AU - Bicker, K. A.

AU - Birsa, R.

AU - Bisplinghoff, J.

AU - Bordalo, P.

AU - Bradamante, F.

AU - Braun, C.

AU - Bravar, A.

AU - Bressan, A.

AU - Burtin, E.

AU - Chaberny, D.

AU - Chiosso, M.

AU - Chung, S. U.

AU - Cicuttin, A.

AU - Crespo, M. L.

AU - Dalla Torre, S.

AU - Das, S.

AU - Dasgupta, S. S.

AU - Denisov, O. Yu

AU - Dhara, L.

AU - Donskov, S. V.

AU - Doshita, N.

AU - Duic, V.

AU - Dünnweber, W.

AU - Dziewiecki, M.

AU - Efremov, A.

AU - Elia, C.

AU - Eversheim, P. D.

AU - Eyrich, W.

AU - Faessler, M.

AU - Ferrero, A.

AU - Filin, A.

AU - Finger, M.

AU - Fischer, H.

AU - Franco, C.

AU - Du Fresne Von Hohenesche, N.

AU - Friedrich, J. M.

AU - Garfagnini, R.

AU - Gautheron, F.

AU - Gavrichtchouk, O. P.

AU - Gazda, R.

AU - Gerassimov, S.

AU - Geyer, R.

AU - Giorgi, M.

AU - Gnesi, I.

AU - Gobbo, B.

AU - Goertz, S.

AU - Grabmüller, S.

AU - Grasso, A.

AU - Grube, B.

AU - Gushterski, R.

AU - Guskov, A.

AU - Haas, F.

AU - Von Harrach, D.

AU - Hasegawa, T.

AU - Heinsius, F. H.

AU - Herrmann, F.

AU - Hess, C.

AU - Hinterberger, F.

AU - Horikawa, N.

AU - Höppner, Ch

AU - D'Hose, N.

AU - Huber, S.

AU - Ishimoto, S.

AU - Ivanov, O.

AU - Ivanshin, Yu

AU - Iwata, T.

AU - Jahn, R.

AU - Jasinski, P.

AU - Jegou, G.

AU - Joosten, R.

AU - Kabuss, E.

AU - Kang, D.

AU - Ketzer, B.

AU - Khaustov, G. V.

AU - Khokhlov, Yu A.

AU - Kisselev, Yu

AU - Klein, F.

AU - Klimaszewski, K.

AU - Koblitz, S.

AU - Koivuniemi, J. H.

AU - Kolosov, V. N.

AU - Kondo, K.

AU - Königsmann, K.

AU - Konorov, I.

AU - Konstantinov, V. F.

AU - Korzenev, A.

AU - Kotzinian, A. M.

AU - Kouznetsov, O.

AU - Krämer, M.

AU - Kroumchtein, Z. V.

AU - Kunne, F.

AU - Kurek, K.

AU - Lauser, L.

AU - Lednev, A. A.

AU - Lehmann, A.

AU - Levorato, S.

AU - Lichtenstadt, J.

AU - Maggiora, A.

AU - Magnon, A.

AU - Makke, N.

AU - Mallot, G. K.

AU - Mann, A.

AU - Marchand, C.

AU - Martin, A.

AU - Marzec, J.

AU - Massmann, F.

AU - Matsuda, T.

AU - Meyer, W.

AU - Michigami, T.

AU - Mikhailov, Yu V.

AU - Moinester, M. A.

AU - Morreale, A.

AU - Mutter, A.

AU - Nagaytsev, A.

AU - Nagel, T.

AU - Nerling, F.

AU - Neubert, S.

AU - Neyret, D.

AU - Nikolaenko, V. I.

AU - Nowak, W. D.

AU - Nunes, A. S.

AU - Olshevsky, A. G.

AU - Ostrick, M.

AU - Padee, A.

AU - Panknin, R.

AU - Panzieri, D.

AU - Parsamyan, B.

AU - Paul, S.

AU - Perevalova, E.

AU - Pesaro, G.

AU - Peshekhonov, D. V.

AU - Piragino, G.

AU - Platchkov, S.

AU - Pochodzalla, J.

AU - Polak, J.

AU - Polyakov, V. A.

AU - Pontecorvo, G.

AU - Pretz, J.

AU - Quintans, C.

AU - Rajotte, J. F.

AU - Ramos, S.

AU - Rapatsky, V.

AU - Reicherz, G.

AU - Richter, A.

AU - Rocco, E.

AU - Rondio, E.

AU - Rossiyskaya, N. S.

AU - Ryabchikov, D. I.

AU - Samoylenko, V. D.

AU - Sandacz, A.

AU - Sapozhnikov, M. G.

AU - Sarkar, S.

AU - Savin, I. A.

AU - Sbrizzai, G.

AU - Schiavon, P.

AU - Schill, C.

AU - Schlüter, T.

AU - Schmitt, L.

AU - Schönning, K.

AU - Schopferer, S.

AU - Schröder, W.

AU - Shevchenko, O. Yu

AU - Siebert, H. W.

AU - Silva, L.

AU - Sinha, L.

AU - Sissakian, A. N.

AU - Slunecka, M.

AU - Smirnov, G. I.

AU - Sosio, S.

AU - Sozzi, F.

AU - Srnka, A.

AU - Stolarski, M.

AU - Sulc, M.

AU - Sulej, R.

AU - Sznajder, P.

AU - Takekawa, S.

AU - Ter Wolbeek, J.

AU - Tessaro, S.

AU - Tessarotto, F.

AU - Teufel, A.

AU - Tkatchev, L. G.

AU - Uhl, S.

AU - Uman, I.

AU - Vandenbroucke, M.

AU - Virius, M.

AU - Vlassov, N. V.

AU - Windmolders, R.

AU - Wiślicki, W.

AU - Wollny, H.

AU - Zaremba, K.

AU - Zavertyaev, M.

AU - Zemlyanichkina, E.

AU - Ziembicki, M.

AU - Zhuravlev, N.

AU - Zvyagin, A.

N1 - Funding Information: In the original published version of the article, Valerie Vancollie was mistakenly omitted from the list of members of the International Mouse Phenotyping Consortium. In addition, recognition of funding from Wellcome Trust grant WT098051 was mistakenly omitted from the Acknowledgements. The errors have been corrected in both the PDF and HTML versions of the paper.

PY - 2012/5/11

Y1 - 2012/5/11

N2 - The COMPASS Collaboration at CERN has investigated the π -γ→π-π-π+ reaction at center-of-momentum energy below five pion masses, √s<5mπ, embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t ′<0.001GeV2/c2. Using partial-wave analysis techniques, the scattering intensity of Coulomb production described in terms of chiral dynamics and its dependence on the 3π-invariant mass m3π=√s were extracted. The absolute cross section was determined in seven bins of √s with an overall precision of 20%. At leading order, the result is found to be in good agreement with the prediction of chiral perturbation theory over the whole energy range investigated.

AB - The COMPASS Collaboration at CERN has investigated the π -γ→π-π-π+ reaction at center-of-momentum energy below five pion masses, √s<5mπ, embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t ′<0.001GeV2/c2. Using partial-wave analysis techniques, the scattering intensity of Coulomb production described in terms of chiral dynamics and its dependence on the 3π-invariant mass m3π=√s were extracted. The absolute cross section was determined in seven bins of √s with an overall precision of 20%. At leading order, the result is found to be in good agreement with the prediction of chiral perturbation theory over the whole energy range investigated.

UR - http://www.scopus.com/inward/record.url?scp=84861060125&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.108.192001

DO - 10.1103/PhysRevLett.108.192001

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AN - SCOPUS:84861060125

SN - 0031-9007

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

M1 - 192001

ER -

First measurement of chiral dynamics in π ^-γ→π^-π^-π⁺

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