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DOCUMENT ID TECN COMMENT
? N K /?total
VALUE
?
?1 /?
0:2 to 0:3 OUR ESTIMATE 0:23 0:03 GOPAL 80 DPWA K N ! K N 0:22 0:03 ALSTON-... 78 DPWA K N ! K N We do not use the following data for averages, ts, limits, etc. 0:24 0:03 GOPAL 77 DPWA See GOPAL 80 1 MARTIN 0:28 or 0:26 77 DPWA K N multichannel
(?i ?f )1/2 /?total in N K ! (1690) ! (1385) , S-wave
+0:27 0:04
VALUE
PREVOST
74 DPWA K ? N !
TECN
COMMENT
(1385)
Page 2
Created: 5/26/1998 11:56
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998) (1690) BRANCHING RATIOS
The sum of all the quoted branching ratios is more than 1.0. The twobody ratios are from partial-wave analyses, and thus probably are more reliable than the three-body ratios, which are determined from bumps in cross sections. Of the latter, the bump looks more signi cant. (The error given for the ratio looks unreasonably small.) Hardly any of the decay can be via (1385), for then seven times as much decay would be required. See \Sign conventions for resonance couplings" in the Note on and Resonances.
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998)
1 The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner t. Another D03 at 1966 MeV is also suggested by MARTIN 77, but is very uncertain. 2 BARTLEY 68 uses only cross-section data. The enhancement is not seen by PREVOST 71.
VALUE (MeV) DOCUMENT ID TECN COMMENT
(1690) DECAY MODES ?1 ?2 ?3 ?4 ?5 ?6
Mode NK Fraction (?i /?) 20{30 % 20{40 % 25 % 20 %
(1385) , S-wave The above branching fractions are our estimates, not ts or averages. Page 1 Created: 5/26/1998 11:56
DOCUMENT ID
(?i ?f )1/2 /?total in N K ! (1690) !
1
0:21
VALUE
ARMENTEROS68C HDBC K ? N !
1
DOCUMENT ID
DOCUMENT ID
TECN
COMMENT
(?1 ?4 )1/2 /?
1 1 (?1 ?6 ) /2 /? 1
VALUE (MeV) DOCUMENT ID TECN COMMENT
(1690) WIDTH
50 to 70 ( 60) OUR ESTIMATE 67:2 5:6 KOISO 85 DPWA K ? p ! 61 5 GOPAL 80 DPWA K N ! K N 64 10 ALSTON-... 78 DPWA K N ! K N 60 5 GOPAL 77 DPWA K N multichannel 82 8 HEPP 76B DPWA K ? N ! 60 4 KANE 74 DPWA K ? p ! We do not use the following data for averages, ts, limits, etc. 1 MARTIN 62 or 62 77 DPWA K N multichannel 38 CARROLL 76 DPWA Isospin-0 total
(1690) MASS
1685 to 1695 ( 1690) OUR ESTIMATE 1695:7 2:6 KOISO 85 DPWA K ? p ! 1690 5 GOPAL 80 DPWA K N ! K N 1692 5 ALSTON-... 78 DPWA K N ! K N 1690 5 GOPAL 77 DPWA K N multichannel 1690 3 HEPP 76B DPWA K ? N ! 1689 1 KANE 74 DPWA K ? p ! We do not use the following data for averages, ts, limits, etc. 1 MARTIN 1687 or 1689 77 DPWA K N multichannel 1692 4 CARROLL 76 DPWA Isospin-0 total
(1690) FOOTNOTES
(1690) REFERENCES
KOISO 85 PDG 82 GOPAL 80 ALSTON-... 78 Also 77 GOPAL 77 MARTIN 77 Also 77B Also 77C CARROLL 76 HEPP 76B LONDON 75 KANE 74 PREVOST 74 BAXTER 73 PREVOST 71 ARMENTEROS 68C BARTLEY 68 NP A433 619 PL 111B Toronto Conf. 159 PR D18 182 PRL 38 1007 NP B119 362 NP B127 349 NP B126 266 NP B126 285 PRL 37 806 PL 65B 487 NP B85 289 LBL-2452 NP B69 246 NP B67 125 Amsterdam Conf. NP B8 216 PRL 21 1111 +Sai, Yamamoto, Ko er Roos, Porter, Aguilar-Benitez+ (TOKY, MASA) (HELS, CIT, CERN) (RHEL) IJP Alston-Garnjost, Kenney+ (LBL, MTHO, CERN) IJP Alston-Garnjost, Kenney+ (LBL, MTHO, CERN) IJP +Ross, VanHorn, McPherson+ (LOIC, RHEL) IJP +Pidcock, Moorhouse (LOUC, GLAS) IJP Martin, Pidcock (LOUC) Martin, Pidcock (LOUC) IJP +Chiang, Kycia, Li, Mazur, Michael+ (BNL) I +Braun, Grimm, Strobele+ (CERN, HEIDH, MPIM) IJP +Yu, Boyd+ (BNL, CERN, EPOL, ORSAY, TORI) (LBL) IJP +Barloutaud+ (SACL, CERN, HEID) +Buckingham, Corbett, Dunn+ (OXF) IJP (CERN, HEID, SACL) +Baillon+ (CERN, HEID, SACL) I +Chu, Dowd, Greene+ (TUFTS, FSU, BRAN) I
TECN
COMMENT
1 (?1 ?5 ) /2 /? 1 1 (?1 ?3 ) /2 /? 1
1 (?i ?f ) /2 /?total in N K ! (1690) !
We do not use the following data for averages, ts, limits, etc. 2 BARTLEY 0:25 0:02 68 HDBC K ? p !
Page 3
Created: 5/26/1998 11:56
(?i ?f )1/2 /?total in N K ! (1690) !
1
? 0:34 ? 0:25 ? 0:29 ? 0:28 ? 0:28
VALUE
0:02 KOISO 85 DPWA K ? p ! 0:03 GOPAL 77 DPWA K N multichannel 0:03 HEPP 76B DPWA K ? N ! 0:03 LONDON 75 HLBC K ? p ! 0 0 0:02 KANE 74 DPWA K ? p ! We do not use the following data for averages, ts, limits, etc. 1 MARTIN ? 0:30 or ? 0:28 77 DPWA K N multichannel
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998)
(1690)
D03
I (J P ) = 0( 3 ? ) Stat of the mass, width, and elasticity published before 1974 are now obsolete and have been omitted. They were last listed in our 1982 edition Physics Letters 111B (1982).
1
DOCUMENT ID
DOCUMENT ID
TECN
COMMENT
1 (?1 ?2 ) /2 /? 1
(?i ?f )1/2 /?total in N K ! (1690) !
0:00 0:03
1
VALUE VALUE
BAXTER
73 DPWA K ? p ! neutrals
TECN COMMENT
? N K /?total
VALUE
?
?1 /?
0:2 to 0:3 OUR ESTIMATE 0:23 0:03 GOPAL 80 DPWA K N ! K N 0:22 0:03 ALSTON-... 78 DPWA K N ! K N We do not use the following data for averages, ts, limits, etc. 0:24 0:03 GOPAL 77 DPWA See GOPAL 80 1 MARTIN 0:28 or 0:26 77 DPWA K N multichannel
(?i ?f )1/2 /?total in N K ! (1690) ! (1385) , S-wave
+0:27 0:04
VALUE
PREVOST
74 DPWA K ? N !
TECN
COMMENT
(1385)
Page 2
Created: 5/26/1998 11:56
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998) (1690) BRANCHING RATIOS
The sum of all the quoted branching ratios is more than 1.0. The twobody ratios are from partial-wave analyses, and thus probably are more reliable than the three-body ratios, which are determined from bumps in cross sections. Of the latter, the bump looks more signi cant. (The error given for the ratio looks unreasonably small.) Hardly any of the decay can be via (1385), for then seven times as much decay would be required. See \Sign conventions for resonance couplings" in the Note on and Resonances.
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998)
1 The two MARTIN 77 values are from a T-matrix pole and from a Breit-Wigner t. Another D03 at 1966 MeV is also suggested by MARTIN 77, but is very uncertain. 2 BARTLEY 68 uses only cross-section data. The enhancement is not seen by PREVOST 71.
VALUE (MeV) DOCUMENT ID TECN COMMENT
(1690) DECAY MODES ?1 ?2 ?3 ?4 ?5 ?6
Mode NK Fraction (?i /?) 20{30 % 20{40 % 25 % 20 %
(1385) , S-wave The above branching fractions are our estimates, not ts or averages. Page 1 Created: 5/26/1998 11:56
DOCUMENT ID
(?i ?f )1/2 /?total in N K ! (1690) !
1
0:21
VALUE
ARMENTEROS68C HDBC K ? N !
1
DOCUMENT ID
DOCUMENT ID
TECN
COMMENT
(?1 ?4 )1/2 /?
1 1 (?1 ?6 ) /2 /? 1
VALUE (MeV) DOCUMENT ID TECN COMMENT
(1690) WIDTH
50 to 70 ( 60) OUR ESTIMATE 67:2 5:6 KOISO 85 DPWA K ? p ! 61 5 GOPAL 80 DPWA K N ! K N 64 10 ALSTON-... 78 DPWA K N ! K N 60 5 GOPAL 77 DPWA K N multichannel 82 8 HEPP 76B DPWA K ? N ! 60 4 KANE 74 DPWA K ? p ! We do not use the following data for averages, ts, limits, etc. 1 MARTIN 62 or 62 77 DPWA K N multichannel 38 CARROLL 76 DPWA Isospin-0 total
(1690) MASS
1685 to 1695 ( 1690) OUR ESTIMATE 1695:7 2:6 KOISO 85 DPWA K ? p ! 1690 5 GOPAL 80 DPWA K N ! K N 1692 5 ALSTON-... 78 DPWA K N ! K N 1690 5 GOPAL 77 DPWA K N multichannel 1690 3 HEPP 76B DPWA K ? N ! 1689 1 KANE 74 DPWA K ? p ! We do not use the following data for averages, ts, limits, etc. 1 MARTIN 1687 or 1689 77 DPWA K N multichannel 1692 4 CARROLL 76 DPWA Isospin-0 total
(1690) FOOTNOTES
(1690) REFERENCES
KOISO 85 PDG 82 GOPAL 80 ALSTON-... 78 Also 77 GOPAL 77 MARTIN 77 Also 77B Also 77C CARROLL 76 HEPP 76B LONDON 75 KANE 74 PREVOST 74 BAXTER 73 PREVOST 71 ARMENTEROS 68C BARTLEY 68 NP A433 619 PL 111B Toronto Conf. 159 PR D18 182 PRL 38 1007 NP B119 362 NP B127 349 NP B126 266 NP B126 285 PRL 37 806 PL 65B 487 NP B85 289 LBL-2452 NP B69 246 NP B67 125 Amsterdam Conf. NP B8 216 PRL 21 1111 +Sai, Yamamoto, Ko er Roos, Porter, Aguilar-Benitez+ (TOKY, MASA) (HELS, CIT, CERN) (RHEL) IJP Alston-Garnjost, Kenney+ (LBL, MTHO, CERN) IJP Alston-Garnjost, Kenney+ (LBL, MTHO, CERN) IJP +Ross, VanHorn, McPherson+ (LOIC, RHEL) IJP +Pidcock, Moorhouse (LOUC, GLAS) IJP Martin, Pidcock (LOUC) Martin, Pidcock (LOUC) IJP +Chiang, Kycia, Li, Mazur, Michael+ (BNL) I +Braun, Grimm, Strobele+ (CERN, HEIDH, MPIM) IJP +Yu, Boyd+ (BNL, CERN, EPOL, ORSAY, TORI) (LBL) IJP +Barloutaud+ (SACL, CERN, HEID) +Buckingham, Corbett, Dunn+ (OXF) IJP (CERN, HEID, SACL) +Baillon+ (CERN, HEID, SACL) I +Chu, Dowd, Greene+ (TUFTS, FSU, BRAN) I
TECN
COMMENT
1 (?1 ?5 ) /2 /? 1 1 (?1 ?3 ) /2 /? 1
1 (?i ?f ) /2 /?total in N K ! (1690) !
We do not use the following data for averages, ts, limits, etc. 2 BARTLEY 0:25 0:02 68 HDBC K ? p !
Page 3
Created: 5/26/1998 11:56
(?i ?f )1/2 /?total in N K ! (1690) !
1
? 0:34 ? 0:25 ? 0:29 ? 0:28 ? 0:28
VALUE
0:02 KOISO 85 DPWA K ? p ! 0:03 GOPAL 77 DPWA K N multichannel 0:03 HEPP 76B DPWA K ? N ! 0:03 LONDON 75 HLBC K ? p ! 0 0 0:02 KANE 74 DPWA K ? p ! We do not use the following data for averages, ts, limits, etc. 1 MARTIN ? 0:30 or ? 0:28 77 DPWA K N multichannel
Review of Particle Physics: C. Caso et al. (Particle Data Group), European Physical Journal C3, 1 (1998)
(1690)
D03
I (J P ) = 0( 3 ? ) Stat of the mass, width, and elasticity published before 1974 are now obsolete and have been omitted. They were last listed in our 1982 edition Physics Letters 111B (1982).
1
DOCUMENT ID
DOCUMENT ID
TECN
COMMENT
1 (?1 ?2 ) /2 /? 1
(?i ?f )1/2 /?total in N K ! (1690) !
0:00 0:03
1
VALUE VALUE
BAXTER
73 DPWA K ? p ! neutrals
TECN COMMENT