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@ARTICLE{Collaboration:224273,
      author       = {Andreev, Vladimir and Baghdasaryan, Artem and Begzsuren,
                      Khurelbaatar and Belousov, Anatoli S. and Bolz, Arthur and
                      Boudry, Vincent and Brandt, Gerhard and Brisson, Violette
                      and Britzger, Daniel and Buniatyan, Armen and Bylinkin,
                      Alexander and Bystritskaya, Lena and Campbell, Alan and
                      Cantun Avila, Karla Beatriz and Cerny, Karel and Chekelian,
                      Vladimir and Contreras, J. Guillermo and Cvach, Jaroslav and
                      Dainton, John and Daum, Karin and Diaconu, Cristinel and
                      Dobre, Monica and Dodonov, Vitaliy and Eckerlin, Guenter and
                      Egli, Stephan and Elsen, Eckhard and Favart, Laurent and
                      Fedotov, Alexandre and Feltesse, Joel and Ferencei, Jozef
                      and Fleischer, Manfred and Fomenko, Alexander and
                      Gabathuler, Erwin and Gayler, Joerg and Ghazaryan, Samvel
                      and Goerlich, Lidia and Gogitidze, Nelly and Gouzevitch,
                      Maxime and Grab, Christoph and Grebenyuk, Anastasia and
                      Greenshaw, Timothy and Grindhammer, Guenter and Haidt,
                      Dieter and Henderson, Robert and Hladky, Jan and Hoffmann,
                      Dirk and Horisberger, Roland and Hreus, Tomas and Huber,
                      Florian and Jacquet, Marie and Janssen, Xavier and Jung,
                      Hannes and Kapichine, Mikhail and Kiesling, Christian and
                      Klein, Max and Kleinwort, Claus and Kogler, Roman and
                      Kostka, Peter and Kretzschmar, Jan and Krueger, Katja and
                      Landon, Murrough and Lange, Wolfgang and Laycock, Paul and
                      Lebedev, Andrei I. and Levonian, Serguei V. and Lipka,
                      Katerina and List, Benno and List, Jenny and Lobodzinski,
                      Bogdan and Malinovski, Evgenij and Martyn, Hans-Ulrich and
                      Maxfield, Steve and Mehta, Andrew and Meyer, Andreas and
                      Meyer, Hinrich and Meyer, Joachim and Mikocki, Stanislav and
                      Morozov, Anatoli and Mueller, Katharina and Naumann, Thomas
                      and Newman, Paul R. and Niebuhr, Carsten and Nowak, Grazyna
                      and Olsson, Jan-Erik and Ozerov, Dmitri and Pascaud,
                      Christian and Patel, Girish and Perez, Emmanuelle and
                      Petrukhin, Alexey and Picuric, Ivana and Pirumov, Hayk and
                      Pitzl, Daniel and Placakyte, Ringaile and Pokorny, Boris and
                      Polifka, Richard and Povh, Bogdan and Radescu, Voica and
                      Raicevic, Natasa and Ravdandorj, Togoo and Reimer, Petr and
                      Rizvi, Eram and Robmann, Peter and Roosen, Robert and
                      Rostovtsev, Andrei and Rotaru, Marina and Rusakov, Serguei
                      V. and Salek, David and Sankey, David and Sauter, Michel and
                      Sauvan, Emmanuel and Schmitt, Stefan and Schoeffel, Laurent
                      and Schoening, Andre and Sefkow, Felix and Shushkevich,
                      Stanislav and Soloviev, Yuri and Sopicki, Pawel and South,
                      David and Spaskov, Vladimir and Specka, Arnd and Steder,
                      Michael and Stella, Bruno and Straumann, Ulrich and Sykora,
                      Tomas and Thompson, Paul and Traynor, Daniel and Truoel,
                      Peter and Tsakov, Ivan and Tseepeldorj, Baatar and Turnau,
                      Jacek and Valkarova, Alice and Vallee, Claude and Van
                      Mechelen, Pierre and Vazdik, Yakov and Wegener, Dietrich and
                      Wuensch, Eberhard and Zacek, Jozef and Zhang, Zhiqing and
                      Žlebcík, Radek and Zohrabyan, Hamlet and Zomer, Fabian},
      collaboration = {{H1 Collaboration}},
      title        = {{E}xclusive $\rho^{0}$ {M}eson {P}hotoproduction with a
                      {L}eading {N}eutron at {HERA}},
      reportid     = {PUBDB-2015-03478, DESY-15-120. arxiv:1508.03176},
      abstract     = {A first measurement is presented of exclusive
                      photoproduction of $\rho ^{0}$ mesons associated with
                      leading neutrons at HERA. The data were taken with the H1
                      detector in the years 2006 and 2007 at a centre-of-mass
                      energy of √s = 319 GeV and correspond to an integrated
                      luminosity of $1.16_{pb}^{−1}$. The $\rho ^{0}$ mesons
                      with transverse momenta $p_{T}$ < 1 GeV are reconstructed
                      from their decays to charged pions, while leading neutrons
                      carrying a large fraction of the incoming proton momentum,
                      $x_{L}$ > 0.35, are detected in the Forward Neutron
                      Calorimeter. The phase space of the measurement is defined
                      by the photon virtuality $Q^{2}$ < 2 $GeV^{2}$, the total
                      energy of the photon-proton system 20 < $W_{γp}$ < 100 GeV
                      and the polar angle of the leading neutron $θ_{n}$ < 0.75
                      mrad. The cross section of the reaction $\gamma p →
                      \rho^{0}n\pi^{+}$ is measured as a function of several
                      variables. The data are interpreted in terms of a double
                      peripheral process, involving pion exchange at the pro-ton
                      vertex followed by elastic photoproduction of a $\rho ^{0}$
                      meson on the virtual pion. In the framework of
                      one-pion-exchange dominance the elastic cross section of
                      photon-pion scattering, $\sigma^{el}(\gamma \pi^{+} →
                      \rho^{0}\pi^{+}$), is extracted. The value of this cross
                      section indicates significant absorptive corrections for the
                      exclusive reaction $\gamma p → \rho^{0}n\pi^{+}$.},
      cin          = {H1},
      ddc          = {530},
      cid          = {I:(DE-H253)H1-20120806},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611)},
      pid          = {G:(DE-HGF)POF3-611},
      experiment   = {EXP:(DE-588)4443767-5},
      typ          = {PUB:(DE-HGF)25 / PUB:(DE-HGF)29},
      eprint       = {1508.03176},
      howpublished = {arXiv:1508.03176},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1508.03176;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/224273},
}