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Ahn, D.S. 1
Ahn, J.K. 1
Akimune, H. 1
Asano, Y. 1
Chang, W.C. 1
Date, S. 1
Ejiri, H. 1
Fujimura, H. 1
Fujiwara, M. 1
Fukui, S. 1

Measurement of Spin-Density Matrix Elements for $\phi$-Meson Photoproduction from Protons and Deuterons Near Threshold

The LEPS collaboration Chang, W.C. ; Ahn, D.S. ; Ahn, J.K. ; et al.

Phys.Rev.C 82 (2010) 015205, 2010.

https://inspirehep.net/literature/859164 Inspire Record 859164 DOI 10.17182/hepdata.55768 https://doi.org/10.17182/hepdata.55768

The LEPS/SPring-8 experiment made a comprehensive measurement of the spin-density matrix elements for $\gamma p \to \phi p$, $\gamma d \to \phi p n$ and $\gamma d \to \phi d$ at forward production angles. A linearly polarized photon beam at $E_{\gamma}$=1.6-2.4 GeV was used for the production of $\phi$ mesons. The natural-parity Pomeron exchange processes remains dominant nearthreshold. The unnatural-parity processes of pseudoscalar exchange is visible in the production from nucleons but is greatly reduced in the coherent production from deuterons. There is no strong $E_{\gamma}$-dependence, but some dependence on momentum-transfer. A small but finite value of the spin-density matrix elements reflecting helicity-nonconserving amplitudes in the $t$-channel is observed.

81 data tables

Table 1

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 2

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 3

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 4

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 5

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 6

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 7

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 8

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 9

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA P --> PHI P reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 10

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 11

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 12

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 13

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 14

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 15

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 16

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 17

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 18

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA P --> PHI P reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 19

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 20

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 21

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 22

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 23

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 24

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 25

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 26

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 27

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA P --> PHI P reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 28

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 29

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 30

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 31

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 32

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 33

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 34

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 35

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 36

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA DEUT --> PHI P N reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 37

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 38

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 39

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 40

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 41

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 42

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 43

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 44

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 45

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA DEUT --> PHI P N reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 46

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 47

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 48

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 49

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 50

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 51

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 52

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 53

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 54

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA DEUT --> PHI P N reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 55

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 56

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 57

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 58

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 59

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 60

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 61

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 62

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 63

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA DEUT --> PHI DEUT reaction in the helicity system as a function of T-Tmin for 3 incident photon energy regions.

Table 64

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 65

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 66

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 67

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 68

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 69

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 70

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 71

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 72

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA DEUT --> PHI DEUT reaction in the Gottfried-Jackson system as a function of T-Tmin for 3 incident photon energy regions.

Table 73

Measurements of the spin density matrix element RHO(JJ=0,MM=00) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 74

Measurements of the spin density matrix element RE(RHO(JJ=0,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 75

Measurements of the spin density matrix element RHO(JJ=0,MM=1-1) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 76

Measurements of the spin density matrix element RHO(JJ=0,MM=11) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 77

Measurements of the spin density matrix element RHO(JJ=1,MM=00) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 78

Measurements of the spin density matrix element RE(RHO(JJ=1,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 79

Measurements of the spin density matrix element RHO(JJ=1,MM=1-1) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 80

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=10)) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

Table 81

Measurements of the spin density matrix element IM(RHO(JJ=2,MM=1-1)) for the GAMMA DEUT --> PHI DEUT reaction in the Adair system as a function of T-Tmin for 3 incident photon energy regions.

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