Abstract
The reaction γp → pπ0η has been studied with the CBELSA detector at the tagged photon beam of the Bonn electron stretcher facility. The reaction shows contributions from Δ+(1232)η , N(1535)+π0 and pa 0(980) as intermediate states. A partial-wave analysis suggests that the reaction proceeds via formation of six Δ -resonances, Δ(1600)P 33 , Δ(1920)P 33 , Δ(1700)D 33 , Δ(1940)D 33 , Δ(1905)F 35 , Δ(2360)D 33 , and two nucleon resonances N(1880)P 11 and N(2200)P 13 , for which pole positions and decay branching ratios are given.
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S. Capstick, N. Isgur, Phys. Rev. D 34, 2809 (1986).
U. Löring, B.C. Metsch, H.R. Petry, Eur. Phys. J. A 10 395
L.Y. Glozman, W. Plessas, K. Varga, R.F. Wagenbrunn, Phys. Rev. D 58, 094030 (1998).
M. Anselmino, E. Predazzi, S. Ekelin, S. Fredriksson, D.B. Lichtenberg, Rev. Mod. Phys. 65, 1199 (1993).
M. Kirchbach, M. Moshinsky, Yu.F. Smirnov, Phys. Rev. D 64, 114005 (2001).
E. Santopinto, Phys. Rev. C 72, 022201 (2005).
J.M. Maldacena, Adv. Theor. Math. Phys. 2, 231 (1998) (Int. J. Theor. Phys. 38, 1113 (1999)).
E. Witten, Adv. Theor. Math. Phys. 2, 253 (1998).
I.R. Klebanov, arXiv:hep-th/0009139.
A. Karch, E. Katz, D.T. Son, M.A. Stephanov, Phys. Rev. D 74, 015005 (2006).
S.J. Brodsky, Eur. Phys. J. A 31, 638 (2007).
H. Forkel, M. Beyer, T. Frederico, JHEP 0707, 077 (2007).
H. Forkel, M. Beyer, T. Frederico, Int. J. Mod. Phys. E 16, 2794 (2007).
S. Basak, Phys. Rev. D 76, 074504 (2007).
Particle Data Group (C. Amsler), Phys. Lett. B 667, 1 (2008).
R.A. Arndt, W.J. Briscoe, I.I. Strakovsky, R.L. Workman, Phys. Rev. C 74, 045205 (2006).
B. Metsch, private communication, 2007.
A.V. Anisovich, A. Sarantsev, O. Bartholomy, E. Klempt, V.A. Nikonov, U. Thoma, Eur. Phys. J. A 25, 427 (2005).
A.V. Sarantsev, V.A. Nikonov, A.V. Anisovich, E. Klempt, U. Thoma, Eur. Phys. J. A 25, 441 (2005).
B.M.K. Nefkens, $\pi N$ Newslett. 13, 270 (1997).
M. Döring, E. Oset, D. Strottman, Phys. Rev. C 73, 045209 (2006).
J. Ajaka, Phys. Rev. Lett. 100, 052003 (2008).
M. Döring, E. Oset, D. Strottman, Phys. Lett. B 639, 59 (2006).
W. Hillert, Eur. Phys. J. A 28, S01, 139 (2006).
E. Aker, Nucl. Instrum. Methods A 321, 69 (1992).
U. Thoma, Phys. Lett. B 659, 87 (2008).
H. van Pee, Eur. Phys. J. A 31, 61 (2007).
G. Suft, Nucl. Instrum. Methods A 538, 416 (2005).
A.V. Anisovich, E. Klempt, A.V. Sarantsev, U. Thoma, Eur. Phys. J. A 24, 111 (2005).
A.V. Anisovich, A.V. Sarantsev, Eur. Phys. J. A 30, 427 (2006).
A.V. Anisovich, V.V. Anisovich, E. Klempt, V.A. Nikonov, A.V. Sarantsev, Eur. Phys. J. A 34, 129 (2007).
R. Bradford, Phys. Rev. C 73, 035202 (2006).
J.W.C. McNabb, Phys. Rev. C 69, 042201 (2004).
A. Lleres, Eur. Phys. J. A 31, 79 (2007).
R.G.T. Zegers, Phys. Rev. Lett. 91, 092001 (2003).
R. Bradford, Phys. Rev. C 75, 035205 (2007).
A. Lleres, arXiv:0807.3839 [nucl-ex].
R. Lawall, Eur. Phys. J. A 24, 275 (2005).
R. Castelijns, Eur. Phys. J. A 35, 39 (2008).
O. Bartholomy, Phys. Rev. Lett. 94, 012003 (2005).
O. Bartalini, Eur. Phys. J. A 26, 399 (2005).
A.A. Belyaev, Nucl. Phys. B 213, 201 (1983).
R.A. Arndt, http://gwdac.phys.gwu.edu
K.H. Althoff, Z. Phys. C 18, 199 (1983)
V. Crede, Phys. Rev. Lett. 94, 012004 (2005).
B. Krusche, Phys. Rev. Lett. 74, 3736 (1995).
J. Ajaka, Phys. Rev. Lett. 81, 1797 (1998).
O. Bartalini, Measurement of $\eta$ photoproduction on the proton from threshold to $1500\un{MeV}$, arXiv:0707.1385 [nucl-ex].
E. Gutz, Eur. Phys. J. A 35, 291 (2008).
S. Prakhov, Phys. Rev. C 69, 045202 (2004).
A.V. Sarantsev, Phys. Lett. B 659, 94 (2008).
A.V. Anisovich, V. Kleber, E. Klempt, V.A. Nikonov, A.V. Sarantsev, U. Thoma, Eur. Phys. J. A 34, 243 (2007).
T. Nakabayashi, Phys. Rev. C 74, 035202 (2006).
G. Höhler, F. Kaiser, R. Koch, E. Pietarinen, Handbook Of Pion Nucleon Scattering (Fachinformation Zentrum, Karlsruhe, 1979) p. 440 (Physics Data, No. 12-1 (1979)).
R.E. Cutkosky, C.P. Forsyth, J.B. Babcock, R.L. Kelly, R.E. Hendrick, Pion-Nucleon Partial Wave Analysis, in Baryon 1980, Proceedings of the 4th International Conference on Baryon Resonances, Toronto, Canada, July 14-16, 1980 (Toronto University, Physics Department, 1980).
D.M. Chew, New $\Delta$ Parameters From A Simpler, Cheaper And More Reliable $\pi N$ Partial Wave Analysis, in Baryon 1980, Proceedings of the 4th International Conference on Baryon Resonances, Toronto, Canada, July 14-16, 1980 (Toronto University, Physics Department, 1980).
D.M. Manley, E.M. Saleski, Phys. Rev. D 45, 4002 (1992).
I. Horn, Evidence for a parity doublet $\Delta(1920)P_{33}$ and $\Delta(1940)D_{33}$ from $\gamma p \rightarrow p\pi^0\eta$, to be published in Phys. Rev. Lett.
J. Vandermeulen, Z. Phys. C 37, 563 (1988).
E. Klempt, C. Batty, J.M. Richard, Phys. Rep. 413, 197 (2005).
E. Klempt, $\Delta$-resonances: Quark models, chiral symmetry and AdS/QCD, this issue.
L.Y. Glozman, Phys. Lett. B 475, 329 (2000).
T.D. Cohen, L.Y. Glozman, Phys. Rev. D 65, 016006 (2002).
R.L. Jaffe, D. Pirjol, A. Scardicchio, Phys. Rep. 435, 157 (2006).
See, e.g., L.Y. Glozman, Phys. Rev. Lett. 99, 191602 (2007) and references therein.
E. Klempt, Phys. Lett. B 559, 144 (2003).
E. Klempt, A. Zaitsev, Phys. Rep. 454, 1 (2007).
M. Shifman, A. Vainshtein, Phys. Rev. D 77, 034002 (2008).
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The CB-ELSA Collaboration., Horn, I., Anisovich, A.V. et al. Study of the reaction γp → pπ0η. Eur. Phys. J. A 38, 173–186 (2008). https://doi.org/10.1140/epja/i2008-10657-7
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DOI: https://doi.org/10.1140/epja/i2008-10657-7