Related papers: Measuring the FSR--inclusive pi+pi- cross section

An alternative parametrization of the pion form factor and the mass and width of rho(770)

In order to reveal possible mass shifts of the vector mesons in a dense strongly interacting medium presumably created in high energy heavy ion collisions it is necessary to know their free masses reliably. The rho(770) mass quoted in the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Peter Lichard , Martin Vojik

Constraining fragmentation functions through hadron-photon production at higher-orders

In certain situations, such as one-particle inclusive processes, it is possible to model the hadronization through Fragmentation Functions (FFs), which are universal non-perturbative functions extracted from experimental data through…

High Energy Physics - Phenomenology · Physics 2023-05-17 Salvador A. Ochoa-Oregon , David F. Rentería-Estrada , Roger J. Hernández-Pinto , German F. R. Sborlini

Cross Section Measurement of Charged Pion Photoproduction from Hydrogen and Deuterium

We have measured the differential cross section for the gamma n --> pi- p and gamma p --> pi+ n reactions at center of mass angle of 90 degree in the photon energy range from 1.1 to 5.5 GeV at Jefferson Lab (JLab). The data at photon…

Nuclear Experiment · Physics 2008-11-26 L. Y. Zhu

Near L-Edge Single and Multiple Photoionization of Singly Charged Iron Ions

Absolute cross sections for m-fold photoionization (m=1,...,6) of Fe+ by a single photon were measured employing the photon-ion merged-beams setup PIPE at the PETRA III synchrotron light source, operated by DESY in Hamburg, Germany. Photon…

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High-statistics study of neutral-pion pair production in two-photon collisions

The differential cross section for the process $\gamma \gamma \to \pi^0 \pi^0$ has been measured in the kinematic range 0.6 GeV $< W < 4.1$ GeV, $|\cos \theta^*|<0.8$ in energy and pion scattering angle, respectively, in the $\gamma\gamma$…

High Energy Physics - Experiment · Physics 2008-10-03 Belle Collaboration , I. Adachi

First energy scan measurement of $e^{+}e^{-}\to K^{+}K^{-}$ around the $\psi(2S)$ resonance

We report the first measurement of the $e^{+}e^{-}\to K^{+}K^{-}$ cross sections around the $\psi(2S)$ resonance using the energy scan method. The analysis is based on $e^{+}e^{-}$ collision data corresponding to an integrated luminosity of…

High Energy Physics - Experiment · Physics 2026-04-01 BESIII Collaboration , M. Ablikim , M. N. Achasov , P. Adlarson , X. C. Ai , R. Aliberti , A. Amoroso , Q. An , Y. Bai , O. Bakina , Y. Ban , H. -R. Bao , X. L. Bao , V. Batozskaya , K. Begzsuren , N. Berger , M. Berlowski , M. B. Bertani , D. Bettoni , F. Bianchi , E. Bianco , A. Bortone , I. Boyko , R. A. Briere , A. Brueggemann , H. Cai , M. H. Cai , X. Cai , A. Calcaterra , G. F. Cao , N. Cao , S. A. Cetin , X. Y. Chai , J. F. Chang , T. T. Chang , G. R. Che , Y. Z. Che , C. H. Chen , Chao Chen , G. Chen , H. S. Chen , H. Y. Chen , M. L. Chen , S. J. Chen , S. M. Chen , T. Chen , W. Chen , X. R. Chen , X. T. Chen , X. Y. Chen , Y. B. Chen , Y. Q. Chen , Z. K. Chen , J. Cheng , L. N. Cheng , S. K. Choi , X. Chu , G. Cibinetto , F. Cossio , J. Cottee-Meldrum , H. L. Dai , J. P. Dai , X. C. Dai , A. Dbeyssi , R. E. de Boer , D. Dedovich , C. Q. Deng , Z. Y. Deng , A. Denig , I. Denisenko , M. Destefanis , F. De Mori , X. X. 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Hu , J. F. Hu , Q. P. Hu , S. L. Hu , T. Hu , Y. Hu , Z. M. Hu , G. S. Huang , K. X. Huang , L. Q. Huang , P. Huang , X. T. Huang , Y. P. Huang , Y. S. Huang , T. Hussain , N. Hüsken , N. in der Wiesche , J. Jackson , Q. Ji , Q. P. Ji , W. Ji , X. B. Ji , X. L. Ji , X. Q. Jia , Z. K. Jia , D. Jiang , H. B. Jiang , P. C. Jiang , S. J. Jiang , X. S. Jiang , J. B. Jiao , J. K. Jiao , Z. Jiao , L. C. L. Jin , S. Jin , Y. Jin , M. Q. Jing , X. M. Jing , T. Johansson , S. Kabana , X. L. Kang , X. S. Kang , B. C. Ke , V. Khachatryan , A. Khoukaz , O. B. Kolcu , B. Kopf , L. Kröger , M. Kuessner , X. Kui , N. Kumar , A. Kupsc , W. Kühn , Q. Lan , W. N. Lan , T. T. Lei , M. Lellmann , T. Lenz , C. Li , C. Li , C. H. Li , C. K. Li , D. M. Li , F. Li , G. Li , H. B. Li , H. J. Li , H. L. Li , H. N. Li , Hui Li , J. R. Li , J. S. Li , J. W. Li , K. Li , K. L. Li , L. J. Li , Lei Li , M. H. Li , M. R. Li , P. L. Li , P. R. Li , Q. M. Li , Q. X. Li , R. Li , S. X. Li , Shanshan Li , T. Li , T. Y. 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Zhang , Zh. Zh. Zhang , G. Zhao , J. Y. Zhao , J. Z. Zhao , L. Zhao , L. Zhao , M. G. Zhao , S. J. Zhao , Y. B. Zhao , Y. L. Zhao , Y. P. Zhao , Y. X. Zhao , Z. G. Zhao , A. Zhemchugov , B. Zheng , B. M. Zheng , J. P. Zheng , W. J. Zheng , X. R. Zheng , Y. H. Zheng , B. Zhong , C. Zhong , H. Zhou , J. Q. Zhou , S. Zhou , X. Zhou , X. K. Zhou , X. R. Zhou , X. Y. Zhou , Y. X. Zhou , Y. Z. Zhou , A. N. Zhu , J. Zhu , K. Zhu , K. J. Zhu , K. S. Zhu , L. X. Zhu , Lin Zhu , S. H. Zhu , T. J. Zhu , W. D. Zhu , W. J. Zhu , W. Z. Zhu , Y. C. Zhu , Z. A. Zhu , X. Y. Zhuang , J. H. Zou

KLOE extraction of $a_\mu^{\pi\pi}$ in the mass range [0.35,0.95] GeV^2

The KLOE Experiment at the $\phi$ factory DA$\Phi$NE, has measured the cross section $\sigma(e^+e^-\to\pi^+\pi^-\gamma)$ using two different selection schemes: requiring the photon emission at small polar angle and detecting the photon at…

High Energy Physics - Experiment · Physics 2012-08-27 The KLOE Collaboration

Spin asymmetries and correlations in lambda-pair production through the radiative return method

Exclusive baryon pair production through the radiative return is a unique tool to determine the electric and the magnetic form factors in the timelike region over a wide range of energies. The decay of lambda-baryons into p + pi- can be…

High Energy Physics - Phenomenology · Physics 2008-11-26 Henryk Czyz , Agnieszka Grzelinska , Johann H. Kuhn

Photon and neutral pion production in Au+Au collisions at sqrt(s_{NN}) = 130 GeV

We report the first inclusive photon measurements about mid-rapidity (|y|<0.5) from Au+Au collisions at sqrt(s_{NN}) = 130 GeV at RHIC. Photon pair conversions were reconstructed from electron and positron tracks measured with the Time…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

High-statistics measurement of neutral-pion pair production in two-photon collisions

We present a high-statistics measurement of differential cross sections and the total cross section for the process gamma gamma -> pi^0 pi^0 in the kinematic range 0.6 GeV <= W <= 4.0 GeV and |cos theta*| <= 0.8, where W and theta* are the…

High Energy Physics - Experiment · Physics 2009-10-06 Belle Collaboration , S. Uehara , Y. Watanabe

Pion Absorption Cross Section for ^2H and ^3He in the Delta-Isobar Region: A Phenomenological Connection

The absorption of \pi^+ on ^3He in the $\Delta$-region is evaluated with exact inclusion of the final state interaction among the three emerging protons. The absorption is described by a $\pi N \to \Delta$ vertex and a $N\Delta - NN$…

Nuclear Theory · Physics 2008-11-26 H. Kamada , M. P. Locher , T. -S. H. Lee , J. Golak , V. E. Markushin , W. Glöckle , H. Witala

Cross Section Measurements of Charged Pion Photoproduction in Hydrogen and Deuterium from 1.1 to 5.5 GeV

The differential cross section for the gamma +n --> pi- + p and the gamma + p --> pi+ n processes were measured at Jefferson Lab. The photon energies ranged from 1.1 to 5.5 GeV, corresponding to center-of-mass energies from 1.7 to 3.4 GeV.…

Nuclear Experiment · Physics 2012-08-27 Jefferson Lab Hall A Collaboration , 104 Collaboration , L. Y. Zhu

Evaluation of the Front-End FERS 5202 Readout System for Muon Radiography Applications

This work presents a comprehensive characterization of the FERS 5202 front-end readout unit when processing signals from Silicon Photo-multipliers (SiPMs). The readout system's performance is characterized in terms of its charge resolution,…

Instrumentation and Detectors · Physics 2025-12-24 R. M. I. D Gamage , F. Ambrosino , L. Cimmino , G. Nyitrai , G. Saracino

Impact of final state interactions on neutrino-nucleon pion production cross sections extracted from neutrino-deuteron reaction data

The current and near-future neutrino oscillation experiments require significantly improved neutrino-nucleus reaction models. Neutrino-nucleon pion production data play a crucial role to validate corresponding elementary amplitudes that go…

High Energy Physics - Phenomenology · Physics 2019-02-27 S. X. Nakamura , H. Kamano , T. Sato

Photoproduction of pi0pi0 and pi0pi+-pairs off the proton from threshold to the second resonance region

Precise total cross-sections and invariant-mass distributions have been measured for photoproduction of pion pairs off the proton producing $p\pi^0\pi^0$ and $n\pi^+\pi^0$ final states from the threshold region up to 800 MeV incident photon…

Nuclear Experiment · Physics 2012-10-05 F. Zehr , B. Krusche , P. Aguar , J. Ahrens , J. R. M. Annand , H. J. Arends , R. Beck , V. Bekrenev , B. Boillat , A. Braghieri , D. Branford , W. J. Briscoe , J. Brudvik , S. Cherepnya , R. F. B. Codling , E. J. Downie , P. Drexler , D. I. Glazier , L. V. Fil'kov , R. Gregor , E. Heid , D. Hornidge , I. Jaegle , O. Jahn , V. L. Kashevarov , A. Knezevic , R. Kondratiev , M. Korolija , M. Kotulla , D. Krambrich , A. Kulbardis , M. Lang , V. Lisin , K. Livingston , S. Lugert , I. J. D. MacGregor , D. M. Manley , Y. Maghrbi , M. Martinez , J. C. McGeorge , D. Mekterovic , V. Metag , B. M. K. Nefkens , A. Nikolaev , M. Ostrick , P. Pedroni , F. Pheron , A. Polonski , S. Prakhov , J. W. Price , G. Rosner , M. Rost , T. Rostomyan , S. Schumann , D. Sober , A. Starostin , I. Supek , C. M. Tarbert , A. Thomas , M. Unverzagt , Th. Walcher , D. P. Watts

Measurement of the $pn \to pp\pi^0\pi^-$ Reaction in Search for the Recently Observed Resonance Structure in $d\pi^0\pi^0$ and $d\pi^+\pi^-$ systems

Exclusive measurements of the quasi-free $pn \to pp\pi^0\pi^-$ reaction have been performed by means of $pd$ collisions at $T_p$ = 1.2 GeV using the WASA detector setup at COSY. Total and differential cross sections have been obtained…

Nuclear Experiment · Physics 2015-06-16 P. Adlarson , W. Augustyniak , W. Bardan , M. Bashkanov , F. S. Bergmann , M. Berłowski , H. Bhatt , M. Büscher , H. Calén , I. Ciepał , H. Clement , D. Coderre , E. Czerwiński , K. Demmich , E. Doroshkevich , R. Engels , W. Erven , W. Eyrich , P. Fedorets , K. Föhl , K. Fransson , F. Goldenbaum , P. Goslawski , A. Goswami , K. Grigoryev , C. --O. Gullström , F. Hauenstein , L. Heijkenskjöld , V. Hejny , F. Hinterberger , M. Hodana , B. Höistad , A. Jany , B. R. Jany , L. Jarczyk , T. Johansson , B. Kamys , G. Kemmerling , F. A. Khan , A. Khoukaz , D. A. Kirillov , S. Kistryn , J. Klaja , H. Kleines , B. Kłos , M. Krapp , W. Krzemień , P. Kulessa , A. Kupść , K. Lalwani , D. Lersch , L. Li , B. Lorentz , A. Magiera , R. Maier , P. Marciniewski , B. Mariański , M. Mikirtychiants , H. --P. Morsch , P. Moskal , B. K. Nandi , H. Ohm , I. Ozerianska , E. Perez del Rio , N. M. Piskunov , P. Pluciński , P. Podkopał , D. Prasuhn , A. Pricking , D. Pszczel , K. Pysz , A. Pyszniak , C. F. Redmer , J. Ritman , A. Roy , Z. Rudy , S. Sawant , A. Schmidt , S. Schadmand , T. Sefzick , V. Serdyuk , N. Shah , M. Siemaszko , R. Siudak , T. Skorodko , M. Skurzok , J. Smyrski , V. Sopov , R. Stassen , J. Stepaniak , E. Stephan , G. Sterzenbach , H. Stockhorst , H. Ströher , A. Szczurek , T. Tolba , A. Trzciński , R. Varma , G. J. Wagner , W. Węglorz , M. Wolke , A. Wrońska , P. Wüstner , P. Wurm , A. Yamamoto , X. Yuan , J. Zabierowski , C. Zheng , M. J. Zieliński , W. Zipper , J. Złomańczuk , P. Żuprański , M. Żurek

Recent progress in pion photo- and electroproduction analysis

Pion photo- and electroproduction has been studied at threshold and in the resonance region below W=2GeV. At threshold pi^0 production can be very well explained within a dynamical model derived from an effective chiral Lagrangian. The…

Nuclear Theory · Physics 2007-05-23 L. Tiator , D. Drechsel , S. Kamalov , S. N. Yang

Measurement of the $e^+e^- \to\pi^+\pi^- $ process cross section with the SND detector at the VEPP-2000 collider in the energy region $0.525<\sqrt{s}<0.883$ GeV

The cross section of the process $e^+ e^-\to\pi^+\pi^-$ has been measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2000 $e^+e^-$ collider VEPP-2000 in the energy region $525 <\sqrt[]{s} <883$ MeV. The measurement is…

High Energy Physics - Experiment · Physics 2021-02-24 SND Collaboration , M. N. Achasov , A. A. Baykov , A. Yu. Barnyakov , K. I. Beloborodov , A. V. Berdyugin , D. E. Berkaev , A. G. Bogdanchikov , A. A. Botov , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , L. V. Kardapoltsev , A. G. Kharlamov , I. A. Koop , A. A. Korol , D. P. Kovrizhin , A. S. Kupich , A. P. Lysenko , K. A. Martin , N. A. Melnikova , N. Yu. Muchnoi , A. E. Obrazovsky , E. V. Pakhtusova , E. A. Perevedentsev , K. V. Pugachev , Y. S. Savchenko , S. I. Serednyakov , Z. K. Silagadze , P. Yu. Shatunov , Yu. M. Shatunov , D. A. Shtol , D. B. Shwartz , I. K. Surin , Yu. V. Usov , I. M. Zemlyansky , V. N. Zhabin

Rescattering effects in incoherent photoproduction of pi-mesons off deuterium in the Delta(1232) resonance region

Incoherent photoproduction of pions on the deuteron in the Delta(1232) resonance region is investigated in order to study the influence of final state NN and PiN rescattering. For the elementary production operator an effective Lagrangian…

Nuclear Theory · Physics 2007-05-23 Eed M. Darwish

Final state photon production at LEP

We present a detailed study of photon production in hadronic events in electron-positron annihilation at LEP energies. We show that estimates of the inclusive photon spectrum using the quark-to-photon fragmentation function determined using…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Gehrmann-De Ridder , E. W. N. Glover