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  1. Article

    Open Access

    Improved measurement of the strong-phase difference \(\delta _D^{K\pi }\) in quantum-correlated \(D{\bar{D}}\) decays

    The decay \(D \rightarrow K^-\pi ^+\) D → ...

    M. Ablikim, M. N. Achasov, P. Adlarson, M. Albrecht in The European Physical Journal C (2022)

  2. Article

    Open Access

    B-flavor tagging at Belle II

    We report on new flavor tagging algorithms developed to determine the quark-flavor content of bottom ( ) mesons at Belle II. The algorithms provide essential inputs for measurement...

    F. Abudinén, N. Akopov, A. Aloisio, V. Babu in The European Physical Journal C (2022)

  3. Article

    Open Access

    Measurement of the absolute branching fraction of the inclusive decay \(\Lambda _c^+ \rightarrow K_S^0X\)

    We report the first measurement of the absolute branching fraction of the inclusive decay \(\Lambda _c^+ \rightarrow K_S^0X\)

    M. Ablikim, M. N. Achasov, P. Adlarson, S. Ahmed in The European Physical Journal C (2020)

  4. Article

    Open Access

    Observation of X(2370) and search for X(2120) in \(J/\psi \rightarrow \gamma K{\bar{K}} \eta '\)

    Using a sample of \(1.31\times 10^{9} ~J/\psi \)1.31×109J/ψ events collected with the BESIII detector, we perform a study of \(J/\psi \rightarrow \gamma K{\bar{K}}\eta '\)J/ψ→γKK¯η′. X(2370) is observed in the $$...

    M. Ablikim, M. N. Achasov, P. Adlarson, S. Ahmed in The European Physical Journal C (2020)

  5. Article

    Open Access

    FCC Physics Opportunities

    We review the physics opportunities of the Future Circular Collider, covering its e+e-, pp, ep and heavy ion programmes. We describe the measurement capabilities of each FCC component, addressing the study of ele...

    A. Abada, M. Abbrescia, S. S. AbdusSalam, I. Abdyukhanov in The European Physical Journal C (2019)

  6. Article

    Open Access

    Feasibility studies of time-like proton electromagnetic form factors at \(\overline{\rm P}\) ANDA at FAIR

    Simulation results for future measurements of electromagnetic proton form factors at \(\overline{\rm P}\) ...

    B. Singh, W. Erni, B. Krusche, M. Steinacher, N. Walford in The European Physical Journal A (2016)

  7. Article

    Open Access

    Improved measurement of the absolute branching fraction of \(D^{+}\rightarrow \bar{K}^0 \mu ^{+}\nu _{\mu }\)

    By analyzing 2.93 fb \(^{-1}\) ...

    M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak in The European Physical Journal C (2016)

  8. Article

    Open Access

    Experimental access to Transition Distribution Amplitudes with the P̄ANDA experiment at FAIR

    Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclu...

    B. P. Singh, W. Erni, I. Keshelashvili, B. Krusche in The European Physical Journal A (2015)

  9. No Access

    Article

    Effects of azimuth-symmetric acceptance cutoffs on the measured asymmetry in unpolarized Drell-Yan fixed-target experiments

    Fixed-target unpolarized Drell-Yan experiments often feature an acceptance depending on the polar angle of the lepton tracks in the laboratory frame. Typically leptons are detected in a defined angular range, ...

    A. Bianconi, M. P. Bussa, M. Destefanis, L. Ferrero in The European Physical Journal A (2013)

  10. Article

    Open Access

    Technical design report for the \(\overline{P}\) ANDA (AntiProton Annihilations at Darmstadt) Straw Tube Tracker

    This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the ...

    W. Erni, I. Keshelashvili, B. Krusche, M. Steinacher in The European Physical Journal A (2013)

  11. Article

    Open Access

    Formation of the S = -1 resonance X(2265) in the reaction pp → X+K+ at 2.50 and 2.85 GeV

    Analyzing DISTO data of pppΛK + at T p = 2.50 and 2.85GeV to populate a previously reported X(2265) -resonance with M ...

    P. Kienle, M. Maggiora, K. Suzuki, T. Yamazaki in The European Physical Journal A (2012)

  12. Article

    Open Access

    Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons

    Azimuthal asymmetries in semi-inclusive production of positive (h +) and negative hadrons (h ) have been measured by scattering 160 GeV muons off longitudinally po...

    M. G. Alekseev, V. Yu. Alexakhin, Yu. Alexandrov in The European Physical Journal C (2010)

  13. Article

    Open Access

    Measurement of the longitudinal spin transfer to Λ and \(\bar{\varLambda}\) hyperons in polarised muon DIS

    The longitudinal polarisation transfer from muons to Λ and \(\bar{\varLambda}\)  hyperons,

    M. Alekseev, V. Yu. Alexakhin, Yu. Alexandrov in The European Physical Journal C (2009)

  14. No Access

    Article

    First exclusive measurements of the K  −  pp state populated in the ppK  +  Λp reaction at 2.85 GeV

    We have analyzed data of the DISTO experiment on the exclusive ppK  +  Λp process at T p  = 2.85 GeV to search for a K ...

    T. Yamazaki, P. Kienle, K. Suzuki, M. Maggiora, (M. Alexeev in Hyperfine Interactions (2009)

  15. No Access

    Article

    Two-prong πHe interactions at 106 MeV

    π-4He interactions at 106MeV, with two secondary charged particles in the final state, have been studied using a self-shunted streamer chamber in a 0.65T magnetic field and equipped with two CCD videocameras for...

    N. Angelov, S. Baginyan, F. Balestra, Yu. Batusov in The European Physical Journal A (2007)

  16. No Access

    Article

    Double spin asymmetry in exclusive ρ0 muoproduction at COMPASS

    The longitudinal double spin asymmetry A1 ρ for exclusive leptoproduction of ρ0 mesons, μ+N→μ+N+ρ, is studied using the COMPASS 2002 and 2003 data. The measured reaction is incoherent excl...

    M. Alekseev, V.Yu. Alexakhin, Yu. Alexandrov in The European Physical Journal C (2007)

  17. No Access

    Article

    Spin physics with antiprotons

    New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessing in Drell-Yan processes expe...

    M. Maggiora, V. Abazov, G. Alexeev, M. Alexeev in Czechoslovak Journal of Physics (2005)

  18. No Access

    Chapter and Conference Paper

    Exclusive η production in pp reactions

    Angular distributions for the exclusive reaction ppppη observed via the π + π π 0 decay channel have been measured at T bea...

    I. Fröhlich, F. Balestra, Y. Bedfer in Refereed and selected contributions from I… (2004)

  19. No Access

    Article

    Exclusive \(\eta\) production in pp reactions

    Angular distributions for the exclusive reaction \(pp\rightarrow pp\eta\) observed via the \(\pi^{ + }\pi^{-}\pi^{0}\) decay channel have been m...

    I. Fröhlich, F. Balestra, Y. Bedfer in The European Physical Journal A - Hadrons … (2003)