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Volumn 63, Issue 12, 1989, Pages 1211-1214

Observation of Ds+K0K+ and Ds+K0K+ and an upper limit on Ds+K0+

(70)  Adler, J a,b,c,d,e,f   Bai, Z a,b,c,d,e,f   Becker, J J a,b,c,d,e,f   Blaylock, G T a,b,c,d,e,f   Bolton, T a,b,c,d,e,f   Brient, J C a,b,c,d,e,f   Brown, J S a,b,c,d,e,f   Bunnell, K O a,b,c,d,e,f   Burchell, M a,b,c,d,e,f   Burnett, T H a,b,c,d,e,f   Cassell, R E a,b,c,d,e,f   Coffman, D a,b,c,d,e,f   Cook, V a,b,c,d,e,f   Coward, D H a,b,c,d,e,f   DeJongh, F a,b,c,d,e,f   Dorfan, D E a,b,c,d,e,f   Drinkard, J a,b,c,d,e,f   Dubois, G P a,b,c,d,e,f   Eigen, G a,b,c,d,e,f   Einsweiler, K F a,b,c,d,e,f   more..


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Indexed keywords


EID: 4243777982     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.63.1211     Document Type: Article
Times cited : (13)

References (40)
  • 13
    • 84927418635 scopus 로고    scopus 로고
    • Revised values of a1= 1.2 and a2= -0.5 are taken from B. Stech, Heidelberg University Report No. HD-THEP-87-18, 1987 (unpublished).
  • 14
    • 84927418634 scopus 로고    scopus 로고
    • We adopt the convention that reference to a state also implies reference to its charge conjugate.
  • 17
    • 84927418632 scopus 로고    scopus 로고
    • Kaon candidates are required to have a usable TOF measurement t, with | t - tK| / σK< | t - tπ| / σpi, where tpi and tK are the predicted pi and K times and σπ, σK are the uncertainties on the time differences. The TOF system provides pi-K separation of > 2 sigma over the relevant range of K+- momenta (p < 1.1 GeV/c). All tracks are accepted as pion candidates, except when the measured TOF is inconsistent with the pi hypothesis. Further background rejection is obtained from dE/dx measurements for pion candidates not having TOF information.
  • 18
    • 84927418630 scopus 로고    scopus 로고
    • A Dsstar mass of 2.109 GeV/c2 is used (Ref. 12).
  • 25
    • 84927418621 scopus 로고    scopus 로고
    • The pion not from the KS0 decay is required to have TOF identification analogous to the kaons in Ref. 13.
  • 31
    • 84927418618 scopus 로고    scopus 로고
    • 45, 478 (1987);
  • 32
    • 84927418617 scopus 로고    scopus 로고
    • 45, 841 (1987);
  • 33
    • 0347062904 scopus 로고
    • [
    • 45, 135
    • 46, 1310 (1987) [Sov. J. Nucl. Phys. 45, 135 (1987)
    • (1987) Sov. J. Nucl. Phys. , vol.46 , pp. 1310
  • 34
    • 84927418616 scopus 로고    scopus 로고
    • 45, 301 (1987);
  • 35
    • 84927418615 scopus 로고    scopus 로고
    • 45, 522 (1987);
  • 36
    • 84927418614 scopus 로고    scopus 로고
    • 46, 767 (1987)].
  • 39
    • 84927418612 scopus 로고    scopus 로고
    • The predictions are derived with δ π K = 100 °. The parameter p in this calculation is constrained by our limit to values < 0.5.
  • 40
    • 84927418610 scopus 로고    scopus 로고
    • Although the model 1 predictions shown do not include final-state interactions, it is interesting to note that better agreement with the data is achieved for the ratios shown in Table I by using | a1/ a2| app 1.8. The uncertainty in this ratio is 25% (Ref. 9), so this represents a 1 sigma deviation from the nominal value of | a1/ a2| = 2.4.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.