The Beam-Helicity Asymmetry for γp pk + K and
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1 The Beam-Helicity Asymmetry for γp pk + K and γp pπ + π Rafael A. Badui Jason Bono Lei Guo Brian Raue Florida nternational University Thomas Jefferson National Accelerator Facility CLAS Collaboration September 18, 215 R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 1 / 19
2 ntroduction Background Quantum Chromodynamics is the theory for the interactions between quarks and gluons QCD makes predictions on bound states composed of these particles Studying QCD through hadron spectroscopy nterested studying strange sector R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 2 / 19
3 ntroduction Goal We are interested in observing missing hyperon excitation predicted by sgur and Capstick and LQCD in the > 2. GeV Region Λ(2) * Σ(2) 1/2 * Λ(22) 7/2 + * Σ(23) 7/2 + **** Λ(25) 3/2 * Σ(27) 5/2 + * Λ(21) 7/2 **** Σ(28) 3/2 + ** Λ(211) 5/2 + *** Σ(21) 7/2 * Λ(2325) 3/2 * Σ(225) *** Λ(235) 9/2 + *** Σ(2455) ** Λ(2585) ** Σ(262) ** Σ(3) * Σ(317) * K. A. Olive et al., (Particle Data Group), Chin. Phys. C, 38 91, 214. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 3 / 19
4 ntroduction Goal We are interested in observing missing hyperon excitation predicted by sgur and Capstick and LQCD in the > 2. GeV Region Λ 1/2 215, 295, 216, 2195, 2235, 228 Λ 3/2 23, 211, 2185, 223, 229 Λ 5/2 218, 2225, 224, 2295 Λ 7/2 215, 223 Σ 1/2 211, 2155, 2165, 225, 226, 2275 Σ 3/2 212, 2185, 22, 2215, 2265, 229 Σ 5/2 225, 225, 227, 228 Σ 7/ S. Capstick et al., Baryons in a relativized quark model with chromodynamics, Phys. Rev. D., vol. 34, p. 289, R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 3 / 19
5 ntroduction Goal We are interested in observing missing hyperon excitation predicted by sgur and Capstick and LQCD in the > 2. GeV Region R. G. Edward et al, Flavor structure of the excited baryon spectra from lattice QCD, Phys. Rev. D, vol. 87, p. 5456, 213. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 3 / 19
6 ntroduction g12 Experiment Analysis of the reaction γp pk + K and pπ + π using data from g12 at CLAS The g12 experiment is a photoproduction experiment on a proton target Luminosity of 68 pb 1 Photon beam was circularly polarized and had an energy range between 1.1 and 5.5 GeV The proton target was not polarized R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 4 / 19
7 ntroduction g12 Experiment Unprecedented statistics of strange particles in photoproduction Large acceptance All particles in final state were detected Maximum photon polarization of 8% R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 4 / 19
8 ntroduction Mass Spectrum 1.1GeV < E γ < 5.5GeV MeV 1 ρ(77) MeV Events / 5 8 Events / φ(12) f 2 (127) f 2 (1525) PRELMNARY 3 PRELMNARY 2 f 2 (127) M(π + π ) ( GeV ) M(K K ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 5 / 19
9 ntroduction Mass Spectrum 1.1GeV < E γ < 5.5GeV MeV MeV Events / (1232) s, N s PRELMNARY Events / Σ(167) Λ(169) Λ(152) PRELMNARY Λ s, Σ s ? M(pπ ) ( GeV ) M(pK ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 5 / 19
10 ntroduction Mass Spectrum 1.1GeV < E γ < 5.5GeV 5 MeV 3 1 MeV 3 1 Events / 5 4 (1232) s Events / PRELMNARY 2 PRELMNARY M(pπ + ) ( GeV ) M(pK ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 5 / 19
11 Background γ π + π p p γ p π π + p γ π γ π + π + π p p p p W. Roberts, Polarization observables in γn K KN, Phys.Rev.., C73:35215, 26. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 6 / 19
12 Background γ π + π p p γ p π π + p γ K + K p p γ π γ π + γ K + π + π K p p p p p p W. Roberts, Polarization observables in γn K KN, Phys.Rev.., C73:35215, 26. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 6 / 19
13 Background Kaon channel has less contributing diagrams We anticipate kaon channel to be easier to handle than pion channel R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 6 / 19
14 ntroduction Plans Our analysis consists of two parts: Beam-Helicity Asymmetry Partial Wave Analysis R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 7 / 19
15 ntroduction Plans Our analysis consists of two parts: Beam-Helicity Asymmetry Partial Wave Analysis R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 7 / 19
16 Background Beam-Helicity asymmetry is a polarization observable Polarization observables allow probing of interfering production mechanisms Many theoretical models use effective Lagrangians with many parameters Polarization data are expected to provide constraints R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 8 / 19
17 Background The beam-helicity asymmetry is defined as Plane and angle definitions: = 1 P γ σ + σ σ + + σ γ X p z X + p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 9 / 19
18 Background Asymmetry is difficult to model n the following figures, open circles are experimentally measured and red curves represent theoretical model R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 1 / 19
19 Background A. Sarantsev, Properties of baryons from the Bonn-Gatchina partial wave analysis. The 1th nternational Workshop on the Physics of Excited Nucleons (NSTAR215). Presentation conducted from Osaka, Japan (215, May 25). Speaker acknowledges V. Crede (FSU). R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 1 / 19
20 Background Asymmetry is difficult to model Model used coupled-channel analysis and fitted to large number of partial waves R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 1 / 19
21 ntegrated over E γ, cos(θ cm ), invariant masses.3 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ).2.1 PRELMNARY γ X p z X + p φ x γ p p π π.3 + γ p p K K R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 11 / 19
22 ntegrated over E γ, cos(θ cm ), invariant masses First-time measurement of for γp pk + K PRELMNARY γ p p π π.3 + γ p p K K R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 11 / 19
23 ntegrated over E γ, cos(θ cm ), invariant masses First-time measurement of for γp pk + K Kaon asymmetry dominated by sin(φ) term while pion s is dominated by sin(2φ) PRELMNARY Kaon asymmetry overall amplitude larger than pion s γ p p π π + γ p p K K R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 11 / 19
24 ntegrated over E γ, cos(θ cm ), invariant masses.3 Asymmetry is observed and is different for kaon and pion channels We investigate the asymmetry s sensitivities to other important kinematic variables PRELMNARY + γ p p π π + γ p p K K R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 11 / 19
25 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
26 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) Bad Tagger Paddle R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
27 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
28 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
29 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = 2.26 ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
30 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = 2.74 ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
31 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
32 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
33 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
34 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
35 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = 3.25 ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
36 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = 3.74 ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
37 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
38 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
39 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) Bad Tagger Paddle R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
40 Beam-Helicity Asymmetry Approximately same excess energy over threshold W = ±.25 (GeV) W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
41 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
42 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
43 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
44 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
45 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
46 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
47 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
48 Beam-Helicity Asymmetry W = ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
49 Replay All Plots Side-by-Side R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 12 / 19
50 .4.3 γp pk + K 3 (φ) = c i sin(i*φ) i=1.4.3 (φ) = γp pπ + π 3 i=1 c i sin(i*φ) PRELMNARY PRELMNARY c 1 c c W (GeV).4 c W (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 13 / 19
51 Fourier analysis shows clearer picture Pion asymmetry is mostly sin(2φ) dominated Kaon asymmetry is sin(φ) dominated Sensitive to w R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 13 / 19
52 Can make asymmetry measurements binning with respect to different kinematic variables R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
53 MeV c 2 Events / (φ) = c i sin(i*φ) i=1 4 PRELMNARY PRELMNARY c M(K K ) ( GeV ).5 c M(K K ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
54 (φ) = c i sin(i*φ) i=1.3.2 Overall asymmetry amplitude decreases as invariant mass increases c 1 c 3 PRELMNARY M(K K ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
55 MeV c 2 Events / (φ) = c i sin(i*φ) i= PRELMNARY M(pK ) ( GeV ) c 1 c 3 PRELMNARY M(pK ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
56 (φ) = c i sin(i*φ) i=1.4 Overall amplitude increases as invariant mass increases.2 PRELMNARY Amplitude greater than.5 at masses greater than 2.2 GeV c 1 c M(pK ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
57 MeV c 2 Events / (φ) = c i sin(i*φ) i=1.1 3 PRELMNARY PRELMNARY c M(pK ) ( GeV ).3.4 c M(pK ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
58 (φ) = c i sin(i*φ) i= Overall, approximately constant asymmetry.1.2 c 1 PRELMNARY.3.4 c M(pK ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
59 2 Events /.5 GeV PRELMNARY (φ) = c i sin(i*φ) i=1 PRELMNARY t(k ) (GeV ) t(k ) (GeV ) c 1 c 3 R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
60 .4 3 (φ) = c i sin(i*φ) i=1.3.2 Smooth dependence on t.1 Amplitude achieves maximum at t 1.25GeV PRELMNARY c t(k ) (GeV ) c 3 R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
61 2 Events /.5 GeV (φ) = 3 i=1 c i sin(i*φ) PRELMNARY.1.2 PRELMNARY.3 c t(k K ) (GeV ).5 c t(k K ) (GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
62 .5.4 (φ) = 3 i=1 c i sin(i*φ).3.2 Also shows interesting features PRELMNARY c 1 c t(k K ) (GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
63 Can make asymmetry measurements binning with respect to different kinematic variables Can compare to theory R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
64 PRELMNARY φ = 9 ± M(p K+) [GeV] W. Roberts, Polarization observables in γn K KN, Phys.Rev.., C73:35215, 26. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
65 γp nk + K γp pk + K PRELMNARY φ = 9 ± M(p K+) [GeV] W. Roberts, Polarization observables in γn K KN, Phys.Rev.., C73:35215, 26. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
66 Can make asymmetry measurements binning with respect to different kinematic variables Can compare to theory γp pπ + π asymmetry is sensitive to center-of-mass energy γp pk + K asymmetry overall amplitude is much larger nvariant mass appears to affect asymmetries significantly Plane definition appears to affect frequency R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
67 Can make asymmetry measurements binning with respect to different kinematic variables Can compare to theory γp pπ + π asymmetry is sensitive to center-of-mass energy γp pk + K asymmetry overall amplitude is much larger nvariant mass appears to affect asymmetries significantly Plane definition appears to affect frequency R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 14 / 19
68 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ) γ X p z X + p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 15 / 19
69 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ) γ X p z X + p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 15 / 19
70 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ) γ X X + z p p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 15 / 19
71 ntegrated over E γ, cos(θ cm ), invariant masses.3 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ).2.1 PRELMNARY γ X X + z p p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 15 / 19
72 ntegrated over E γ, cos(θ cm ), invariant masses sin(φ) dominated PRELMNARY R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 15 / 19
73 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ) γ X X + z p p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 16 / 19
74 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ) γ X X + z p p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 16 / 19
75 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ) γ p X z X + p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 16 / 19
76 ntegrated over E γ, cos(θ cm ), invariant masses.3 (φ) = 1 P γ σ + (φ) σ (φ) σ + (φ) + σ (φ).2.1 PRELMNARY γ p X z X + p φ x R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 16 / 19
77 ntegrated over E γ, cos(θ cm ), invariant masses.3.2 Dominated by sin(φ) term but sin(2φ) contributes as well.1.1 PRELMNARY R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 16 / 19
78 Conclusions Searching for missing hyperon excitations First-time measurement of the beam-helicity asymmetry for γp pk + K Beam-helicity asymmetry is a polarization observable sensitive to many important kinematic variables and is flavor-dependent Theoretical models are currently limited Current measurements are expected to provide constraints Still searching for a deeper understanding of the physics behind this puzzling observable R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 17 / 19
79 Acknowledgements Dr. Lei Guo Dr. Brian Raue Dr. Jason Bono g12 Group CLAS Collaboration Thomas Jefferson Accelerator Facility R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 18 / 19
80 Thank you! Questions? ntroduction Goal g12 Mass Spectrum Beam-Helicity Asymmetry Pion Asymmetry Animation Kaon Asymmetry Animation Slew of Variables Meson-Meson Configuration Comparison Neutral-Baryon Configuration Comparison Positive-Baryon Configuration Comparison Conclusions References R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 19 / 19
81 References Capstick, S. and sgur, N. (1986). Baryons in a Relativized Quark Model with Chromodynamics. Phys.Rev., D34:289. Chung, S. U. (1971). SPN FORMALSMS. Chung, S. U. (1995). Formulas for Partial Wave Analysis. Chung, S. U. and Trueman, T. L. (1975). Positivity conditions on the spin density matrix: A simple parametrization. Phys. Rev. D, 11: Edwards, R. G., Mathur, N., Richards, D. G., and Wallace, S. J. (213). Flavor structure of the excited baryon spectra from lattice qcd. Phys. Rev. D, 87:5456. Gell-Mann, M. (1964). A Schematic Model Of Baryons and Mesons. Phys.Lett., 8: Goetz, J. T. (211). Ξ Hyperon Photoproduction from Threshold to 5.4 GeV with the CEBAF Large Acceptance Spectrometer. PhD thesis, University of California, Los Angeles. Krambrich, D. et al. (29). Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton. Phys.Rev.Lett., 13:522. Lin, H.-W. (29). Hyperon Physics from Lattice QCD. Nucl.Phys.Proc.Suppl., 187:2 27. R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 2 / 19
82 References Lin, H.-W. (211). Review of Baryon Spectroscopy in Lattice QCD. Chin.J.Phys., 49:827. Roberts, W. (26). Polarization observables in γn K KN. Phys.Rev., C73: Rose, M. E. (1995). Elementary Theory of Angular Momentum. Dover Pub. Salgado, C. W. and Weygand, D. P. (214). On the Partial-Wave Analysis of Mesonic Resonances Decaying to Multiparticle Final States Produced by Polarized Photons. Phys.Rept., 537:1 58. Serway, R. A., Moses, C. J., and Moyer, C. A. (24). Modern Physics. Cengage Learning. Strauch, S. et al. (25). Beam-helicity asymmetries in double-charged-pion photoproduction on the proton. Phys.Rev.Lett., 95:1623. Williams, W. S. C. (1971). An ntroduction to Elementary Particles. Academic Press, 111 Fifth Avenue, New York, New York 13. Yao, W. et al. (26). Review of Particle Physics. J.Phys., G33: R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 21 / 19
83 Beam-Helicity Asymmetry W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = 2.26 ±.25 (GeV) W = 2.74 ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = 3.25 ±.25 (GeV) W = 3.73 ±.25 (GeV) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 22 / 19
84 Back R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 22 / 19
85 Beam-Helicity Asymmetry W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) φ (rad) φ (rad) φ (rad) φ (rad) φ (rad) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) φ (rad) φ (rad) φ (rad) φ (rad) φ (rad) W = ±.25 (GeV) W = ±.25 (GeV) W = 3.25 ±.25 (GeV) W = 3.74 ±.25 (GeV) W = ±.25 (GeV) φ (rad) φ (rad) φ (rad) φ (rad) φ (rad) W = ±.25 (GeV) W = ±.25 (GeV) W = ±.25 (GeV) φ (rad) φ (rad) φ (rad) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 23 / 19
86 Back R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 23 / 19
87 ) γp px + X Scatter Plots GeV M(p π ) ( ) GeV M(p K ) ( M(π+ π ) ( GeV ) M(K+ K ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 24 / 19
88 ) γp px + X Scatter Plots GeV M(p π+) ( ) GeV M(p K+) ( M(π+ π ) ( GeV ) M(K+ K ) ( GeV ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 24 / 19
89 ) ) γp px + X Scatter Plots GeV M(p π+) ( GeV M(p K+) ( M(p π ) ( GeV 2.4 ) M(p K ) ( GeV 2.8 ) R.A. Badui, J. Bono, L. Guo, B.A. Raue (FU, JLab, CLAS) Beam-Helicity Asymmetries 24 / 19
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