%0 Journal Article
%A Andreev, Vladimir
%A Baghdasaryan, Artem
%A Begzsuren, Khurelbaatar
%A Belousov, Anatoli S.
%A Bolz, Arthur
%A Boudry, Vincent
%A Brandt, Gerhard
%A Brisson, Violette
%A Britzger, Daniel
%A Buniatyan, Armen
%A Bylinkin, Alexander
%A Bystritskaya, Lena
%A Campbell, Alan
%A Cantun Avila, Karla Beatriz
%A Cerny, Karel
%A Chekelian, Vladimir
%A Contreras, J. Guillermo
%A Cvach, Jaroslav
%A Dainton, John
%A Daum, Karin
%A Diaconu, Cristinel
%A Dobre, Monica
%A Dodonov, Vitaliy
%A Eckerlin, Guenter
%A Egli, Stephan
%A Elsen, Eckhard
%A Favart, Laurent
%A Fedotov, Alexandre
%A Feltesse, Joel
%A Ferencei, Jozef
%A Fleischer, Manfred
%A Fomenko, Alexander
%A Gabathuler, Erwin
%A Gayler, Joerg
%A Ghazaryan, Samvel
%A Goerlich, Lidia
%A Gogitidze, Nelly
%A Gouzevitch, Maxime
%A Grab, Christoph
%A Grebenyuk, Anastasia
%A Greenshaw, Timothy
%A Grindhammer, Guenter
%A Haidt, Dieter
%A Henderson, Robert
%A Hladky, Jan
%A Hoffmann, Dirk
%A Horisberger, Roland
%A Hreus, Tomas
%A Huber, Florian
%A Jacquet, Marie
%A Janssen, Xavier
%A Jung, Hannes
%A Kapichine, Mikhail
%A Kiesling, Christian
%A Klein, Max
%A Kleinwort, Claus
%A Kogler, Roman
%A Kostka, Peter
%A Kretzschmar, Jan
%A Krueger, Katja
%A Landon, Murrough
%A Lange, Wolfgang
%A Laycock, Paul
%A Lebedev, Andrei I.
%A Levonian, Serguei V.
%A Lipka, Katerina
%A List, Benno
%A List, Jenny
%A Lobodzinski, Bogdan
%A Malinovski, Evgenij
%A Martyn, Hans-Ulrich
%A Maxfield, Steve
%A Mehta, Andrew
%A Meyer, Andreas
%A Meyer, Hinrich
%A Meyer, Joachim
%A Mikocki, Stanislav
%A Morozov, Anatoli
%A Mueller, Katharina
%A Naumann, Thomas
%A Newman, Paul R.
%A Niebuhr, Carsten
%A Nowak, Grazyna
%A Olsson, Jan-Erik
%A Ozerov, Dmitri
%A Pascaud, Christian
%A Patel, Girish
%A Perez, Emmanuelle
%A Petrukhin, Alexey
%A Picuric, Ivana
%A Pirumov, Hayk
%A Pitzl, Daniel
%A Placakyte, Ringaile
%A Pokorny, Boris
%A Polifka, Richard
%A Povh, Bogdan
%A Radescu, Voica
%A Raicevic, Natasa
%A Ravdandorj, Togoo
%A Reimer, Petr
%A Rizvi, Eram
%A Robmann, Peter
%A Roosen, Robert
%A Rostovtsev, Andrei
%A Rotaru, Marina
%A Rusakov, Serguei V.
%A Salek, David
%A Sankey, David
%A Sauter, Michel
%A Sauvan, Emmanuel
%A Schmitt, Stefan
%A Schoeffel, Laurent
%A Schoening, Andre
%A Sefkow, Felix
%A Shushkevich, Stanislav
%A Soloviev, Yuri
%A Sopicki, Pawel
%A South, David
%A Spaskov, Vladimir
%A Specka, Arnd
%A Steder, Michael
%A Stella, Bruno
%A Straumann, Ulrich
%A Sykora, Tomas
%A Thompson, Paul
%A Traynor, Daniel
%A Truoel, Peter
%A Tsakov, Ivan
%A Tseepeldorj, Baatar
%A Turnau, Jacek
%A Valkarova, Alice
%A Vallee, Claude
%A Van Mechelen, Pierre
%A Vazdik, Yakov
%A Wegener, Dietrich
%A Wuensch, Eberhard
%A Zacek, Jozef
%A Zhang, Zhiqing
%A Žlebcík, Radek
%A Zohrabyan, Hamlet
%A Zomer, Fabian
%T Exclusive ρ<sup>0</sup> Meson Photoproduction with a Leading Neutron at HERA
%J The European physical journal / C
%V 76
%N DESY-15-120
%@ 1434-6044
%C Berlin
%I Springer
%M PUBDB-2016-01381
%M DESY-15-120
%M arxiv:1508.03176
%P 41
%D 2015
%X A first measurement is presented of exclusive photoproduction of ρ<sup>0</sup> 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<sup>−1</sup>. The ρ<sup>0</sup> mesons with transverse momenta p<sub>T</sub> < 1 GeV are reconstructed from their decays to charged pions, while leading neutrons carrying a large fraction of the incoming proton momentum, x<sub>L</sub> > 0.35, are detected in the Forward Neutron Calorimeter. The phase space of the measurement is defined by the photon virtuality Q<sup>2</sup>  <  2 GeV<sup>2</sup>, the total energy of the photon-proton system 20  <  W<sub>γp</sub>  <  100 GeV and the polar angle of the leading neutron θ<sub>n</sub>  <  0.75 mrad. The cross section of the reaction γp → ρ<sup>0</sup> n π<sup>+</sup> is measured as a function of several variables. The data are interpreted in terms of a double peripheral process, involving pion exchange at the proton vertex followed by elastic photoproduction of a ρ<sup>0</sup> meson on the virtual pion. In the framework of one-pion-exchange dominance the elastic cross section of photon-pion scattering, σ<sup>el</sup>(γπ<sup>+</sup> → ρ<sup>0</sup>π<sup>+</sup>), is extracted. The value of this cross section indicates significant absorptive corrections for the exclusive reaction γp→ρ<sup>0</sup> n π<sup>+</sup>.
%F PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
%9 ReportJournal Article
%U <Go to ISI:>//WOS:000370646800001
%R 10.1140/epjc/s10052-015-3863-1
%U https://bib-pubdb1.desy.de/record/296300