ENTRY 41587 20140929 41654158700000001 SUBENT 41587001 20140929 41654158700100001 BIB 11 32 4158700100002 INSTITUTE (4ZZZDUB) 4158700100003 REFERENCE (J,FCY/L,9,(1),77,2012) Data at 5.20 GeV/c**2. 4158700100004 (J,PPN/L,9,(1),47,2012) 4158700100005 #doi:10.1134/S1547477108040079 4158700100006 Engl.translation of FCY/L,9,(11),47,2012 4158700100007 (J,FCY/L,8,(6),928,2011) Data at 3.83 GeV/c**2. 4158700100008 (J,PPN/L,8,(6),557,2011) 4158700100009 #doi:10.1134/S1547477112030119 4158700100010 Engl.translation of FCY/L,9,(11),47,2012 4158700100011 First author Yu.A.Troyan. 4158700100012 AUTHOR (Yu.A.Troyan,S.G.Arakelyan,A.V.Belyaev,A.P.Ierusalimov,4158700100013 E.B.Plekhanov, A.Yu.Troyan) 4158700100014 TITLE Search and study of low-mass scalar mesons in 4158700100015 n p -> n p pi+ pi- reaction at neutron beam impulse 4158700100016 Pn=(5.20+-0.12) GeV/c . 4158700100017 FACILITY (SYNCH,4ZZZDUB) 4158700100018 INC-SOURCE Neutron beam was produced by stripping of deuterons4158700100019 on 1cm Al target placed inside vacuum chamber. 4158700100020 Neutrons outgoing at 0 deg angle relative to deuteron 4158700100021 beam were cleared from charged particles and gammas. 4158700100022 Set of collimators was used. 4158700100023 In HBC - neutron beam parameters : 4158700100024 impulse resolution 2.5 %, 4158700100025 solid angle 10**-7 sr. 4158700100026 INC-SPECT Quasi-monochromatic neutrons. 4158700100027 SAMPLE Hydrogen bubble chamber - HBC. 4158700100028 METHOD Accuracy of track impulse measurement in HBC - 2-3 %, 4158700100029 accuracy of angle measurement 0.5 deg. 4158700100030 DETECTOR (BUBLC) 1 m hydrogen bubble chamber placed at about 4158700100031 130 m from Al target. 4158700100032 HISTORY (20120510C) M.M. 4158700100033 (20140929A) Refs. of Engl.translation were added. 4158700100034 ENDBIB 32 0 4158700100035 NOCOMMON 0 0 4158700100036 ENDSUBENT 35 0 4158700199999 SUBENT 41587002 20120510 41574158700200001 BIB 6 24 4158700200002 REACTION (1-H-1(N,PIN+PIP+N)1-H-1,,SIG,,MSC) 4158700200003 Cross-section at mass resonance. 4158700200004 6000 events were detected for this reaction. 4158700200005 ASSUMED (ASSUM,1-H-1(N,PIN+PIP+N)1-H-1,,SIG) 4158700200006 ANALYSIS Mass distribution (fig.3 of J,FCY/L,8,(6),928,2011) 4158700200007 was fitted by sum of 9 Legendre polynomials 4158700200008 ( non-resonance part) and 4158700200009 resonance curve in Breit-Wigner form. 4158700200010 Resonance spin J was determined to be 0. 4158700200011 (most probable), 4158700200012 orbital momentum l was determined to be 0., 4158700200013 resonance parity P = +1, parity C=+1, parity G=+1, 4158700200014 isotopic spin I = 0. 4158700200015 MISC-COL (MISC1) Mass of PI+PI- at resonance, MeV/c**2 . 4158700200016 (MISC2) Resonance width, MeV/c**2 , exp. measured. 4158700200017 (MISC3) Resonance width, MeV/c**2 , corrected for 4158700200018 mass resolution ( about 7.8 MeV/c**2 ) as 4158700200019 SQRT( (width-exp)**2 - (resolution)**2 ) . 4158700200020 (MISC4) Statistical significance of resonance was 4158700200021 defined as: (Nres-Nbackgr)/sqrt(Nbackgr) . 4158700200022 ERR-ANALYS (DATA-ERR) All uncertainties include statistical 4158700200023 and systematical uncertainties. 4158700200024 STATUS (TABLE) Table, page 934 of J,FCY/L,8,(6),928,2011. 4158700200025 Data taken from reference. 4158700200026 ENDBIB 24 0 4158700200027 COMMON 4 3 4158700200028 MOM MOM-ERR ASSUM ASSUM-ERR 4158700200029 GEV/C GEV/C MB MB 4158700200030 3.83 0.12 6.46 0.32 4158700200031 ENDCOMMON 3 0 4158700200032 DATA 8 1 4158700200033 DATA DATA-ERR MISC1 MISC1-ERR MISC2 MISC2-ERR 4158700200034 MISC3 MISC4 4158700200035 MICRO-B MICRO-B SEE TEXT SEE TEXT SEE TEXT SEE TEXT 4158700200036 SEE TEXT SEE TEXT 4158700200037 86. 32. 404. 5. 14. 5.4 4158700200038 10.4 4.2 4158700200039 ENDDATA 6 0 4158700200040 ENDSUBENT 39 0 4158700299999 SUBENT 41587003 20120510 41574158700300001 BIB 6 23 4158700300002 REACTION (1-H-1(N,PIN+PIP+N)1-H-1,,SIG,,MSC) 4158700300003 Cross-section at mass resonances. 4158700300004 25650 events were detected for this reaction. 4158700300005 7647 events - for cos(Theta-proton) > 0. 4158700300006 secondary proton in forward hemisphere in C.M.system. 4158700300007 ASSUMED (ASSUM,1-H-1(N,PIN+PIP+N)1-H-1,,SIG) 4158700300008 ANALYSIS Mass distribution (fig.3 of J,FCY/L,9,(1),77,2012) was 4158700300009 fitted by sum of 9 Legendre polynomials ( non-resonance4158700300010 part) and 9 resonances curve in Breit-Wigner form. 4158700300011 Resonance spin J was determined to be 0. 4158700300012 ( most probable), 4158700300013 resonance parity P = +1, parity C=+1, parity G=+1, 4158700300014 isotopic spin I = 0. 4158700300015 MISC-COL (MISC1) Mass of PI+PI- at resonance, MeV/c**2 . 4158700300016 (MISC2) Resonance width, MeV/c**2 , exp. measured. 4158700300017 (MISC3) Resonance width, MeV/c**2 , corrected for 4158700300018 mass resolution ( about 7.8 MeV/c**2 ) as 4158700300019 SQRT( (width-exp)**2 - (resolution)**2 ) . 4158700300020 (MISC4) Statistical significance of resonance was 4158700300021 defined as: Nres/Nbackgr . 4158700300022 ERR-ANALYS (DATA-ERR) All uncertainties include statistical 4158700300023 and systematical uncertainties. 4158700300024 STATUS (TABLE) Table 1 of J,FCY/L,9,(1),77,2012. 4158700300025 ENDBIB 23 0 4158700300026 COMMON 4 3 4158700300027 MOM MOM-ERR ASSUM ASSUM-ERR 4158700300028 GEV/C GEV/C MB MB 4158700300029 5.20 0.12 6.22 0.28 4158700300030 ENDCOMMON 3 0 4158700300031 DATA 9 9 4158700300032 DATA DATA-ERR MISC1 MISC1-ERR MISC2 MISC2-ERR 4158700300033 MISC3 MISC3-ERR MISC4 4158700300034 MB MB SEE TEXT SEE TEXT SEE TEXT SEE TEXT 4158700300035 SEE TEXT SEE TEXT SEE TEXT 4158700300036 12. 6. 350. 3. 11. 8. 4158700300037 7. 9. 3.0 4158700300038 12. 6. 408. 3. 11. 8. 4158700300039 7. 9. 3.5 4158700300040 20. 8. 489. 3. 20. 10. 4158700300041 16. 11. 4.0 4158700300042 18. 8. 579. 5. 17. 14. 4158700300043 7. 14. 3.8 4158700300044 11. 6. 676. 7. 11. 14. 4158700300045 16. 15. 3.0 4158700300046 26. 8. 762. 11. 53. 33. 4158700300047 48. 33. 6.1 4158700300048 11. 5. 878. 7. 30. 14. 4158700300049 11. 16. 3.6 4158700300050 15. 5. 1036. 13. 61. 30. 4158700300051 50. 33. 5.1 4158700300052 11. 4. 1170. 11. 65. 33. 4158700300053 51. 35. 5.8 4158700300054 ENDDATA 22 0 4158700300055 ENDSUBENT 54 0 4158700399999 ENDENTRY 3 0 4158799999999