학술논문
Measurement of exclusive $${\varvec{{{{\pi ^+\pi ^-}}}}}$$ π + π - and $${\varvec{{{{\rho ^0}}}}}$$ ρ 0 meson photoproduction at HERA
Document Type
article
Author
V. Andreev; A. Baghdasaryan; A. Baty; K. Begzsuren; A. Belousov; A. Bolz; V. Boudry; G. Brandt; D. Britzger; A. Buniatyan; L. Bystritskaya; A. J. Campbell; K. B. Cantun Avila; K. Cerny; V. Chekelian; Z. Chen; J. G. Contreras; J. Cvach; J. B. Dainton; K. Daum; A. Deshpande; C. Diaconu; G. Eckerlin; S. Egli; E. Elsen; L. Favart; A. Fedotov; J. Feltesse; M. Fleischer; A. Fomenko; C. Gal; J. Gayler; L. Goerlich; N. Gogitidze; M. Gouzevitch; C. Grab; A. Grebenyuk; T. Greenshaw; G. Grindhammer; D. Haidt; R. C. W. Henderson; J. Hladkỳ; D. Hoffmann; R. Horisberger; T. Hreus; F. Huber; M. Jacquet; X. Janssen; A. W. Jung; H. Jung; M. Kapichine; J. Katzy; C. Kiesling; M. Klein; C. Kleinwort; R. Kogler; P. Kostka; J. Kretzschmar; D. Krücker; K. Krüger; M. P. J. Landon; W. Lange; P. Laycock; A. Lebedev; S. Levonian; K. Lipka; B. List; J. List; W. Li; B. Lobodzinski; E. Malinovski; H.-U. Martyn; S. J. Maxfield; A. Mehta; A. B. Meyer; H. Meyer; J. Meyer; S. Mikocki; M. M. Mondal; A. Morozov; K. Müller; Th. Naumann; P. R. Newman; C. Niebuhr; G. Nowak; J. E. Olsson; D. Ozerov; S. Park; C. Pascaud; G. D. Patel; E. Perez; A. Petrukhin; I. Picuric; D. Pitzl; R. Polifka; V. Radescu; N. Raicevic; T. Ravdandorj; P. Reimer; E. Rizvi; P. Robmann; R. Roosen; A. Rostovtsev; M. Rotaru; D. P. C. Sankey; M. Sauter; E. Sauvan; S. Schmitt; B. A. Schmookler; L. Schoeffel; A. Schöning; F. Sefkow; S. Shushkevich; Y. Soloviev; P. Sopicki; D. South; V. Spaskov; A. Specka; M. Steder; B. Stella; U. Straumann; T. Sykora; P. D. Thompson; D. Traynor; P. Truöl; B. Tseepeldorj; Z. Tu; A. Valkárová; C. Vallée; P. Van Mechelen; D. Wegener; E. Wünsch; J. Žáček; J. Zhang; Z. Zhang; R. Žlebčík; H. Zohrabyan; F. Zomer
Source
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-54 (2020)
Subject
Language
English
ISSN
1434-6044
1434-6052
1434-6052
Abstract
Abstract Exclusive photoproduction of $${{\rho ^0}} (770)$$ ρ 0 ( 770 ) mesons is studied using the H1 detector at the ep collider HERA. A sample of about 900,000 events is used to measure single- and double-differential cross sections for the reaction $$\gamma p \rightarrow \pi ^{+}\pi ^{-}Y$$ γ p → π + π - Y . Reactions where the proton stays intact ( $${{{m_Y}} {=}m_p}$$ m Y = m p ) are statistically separated from those where the proton dissociates to a low-mass hadronic system ( $$m_p{