Superalgebras for superstring states

Evaluation of the gn-->pi-p differential cross sections in the Delta-isobar region

“…Specific examples of agreement with previous measurements are displayed in Fig. 1, where we compare differential cross sections obtained here with those from hadronic facilities (TRIUMF [8], CERN [9], BNL [3], LBL [10], and LAMPF [11]), at energies common to those experiments (within ∆E γ =5 MeV binning).…”

“…The FSI corrections for the CLAS "quasi-free" kinematics were found to be small, as mentioned above. Our FSI calculations were done [4] over the broad energy range (threshold to 2700 MeV for [11] [458 MeV] (black filled dimonds). Shown data came from hadronic facilities, except MAMI-B measurements (within ∆Eγ = 5 MeV binning).…”

“…The present data (solid circles) are shown for 14 energy bins. Previous data came from MAMI-B [7] (blue filled circles), TRIUMF [8] [296, 321, and 346 MeV] (black crosses) CERN [9] [301, 321, 339, 344, 356, 376, 411, and 418] (black open circles), BNL [3] [313, 338, 359, 390, 407, and 436 MeV] (red open triangles), LBL [10] [335, 355, 360, and 409 MeV] (black open dimondes), and LAMPF[11] [458 MeV] (black filled dimonds). Shown data came from hadronic facilities, except MAMI-B measurements (within ∆Eγ = 5 MeV binning).…”

Differential cross section measurements for γn→π−p above the first nucleon resonance region

“…The total normalization uncertainties for the CLAS g13 data are about 3.4%. [8] (red open pluses), SLAC [23] (blue open triangles), DESY [24] (violet open squares), MAMI-B [25] (cyan open down-triangles), and Frascati [26] (pink open stars); π − p → γn data: BNL [27] (green open diamonds), LBL [28] (orange closed diamonds), and LAMPF [29] (gray closed circles); fits: SAID MA27 (blue solid lines), SAID PR15 [30] (red dot-dashed lines), BG2014-02 [4] (green dashed lines), and MAID2007 [31](which terminates at W = 2 GeV or Eγ = 1.65 GeV) (violet dotted lines). The y-axes are log scale.…”

“…. These figures include γn → π − p measurements from CLAS g10 [8], SLAC [23], DESY [24], MAMI-B [25], and Frascati [26], and π − p → γn measurements from BNL [27], LBL [28], and LAMPF [29]. Only the angle-dependent uncertainties are shown for all measurements.…”