Evidence for the c Sookyung Choi Gyeongsang University & Stephen L. Olsen University of Hawaii Expected mass of the c 3 cc level diagram: =??? c
=117 MeV c ?? Dc1 Dc2 3 Dc3 3 h1 ?
1 c0,1,2 J/ potential model: s ( M ) M 2 ' ee 45 ~ 65MeV 2 s ( M J / ) M J / J / ee expect M(c) 3.62~3.64 GeV close to
Expected widths/decay modes Similar to c narrow (but not like the J/) 10< < 20~30 MeV ~same decay channels Br ( B Kc ' ) Br ( B K ' ) 0.7 Br ( B Kc ) Br ( B KJ / ) Search in a channel with strong c signal but absent in decays Search in cKSK channel
Br(cK0K) is respectable (2%)) all charged particles ((E) 13 MeV) low combinatoric background no background (Br(K0K)<104 Br(K0K) 5.2 GeV; |E|<0.2 GeV
|costhrust| < 0.9 between B and rest of evnt all candidate tracks constrained to IP Charged kaon selection K/id: atcpid(3,1,5)>0.6 p/Kid: atcpid(3,1,5)<0.95 veto: _likelihood < 0.9 e veto: eid_prob(3,-1,5)<0.9 CDC hits: Nax8 ; Nster3 vertex : r<0.3 ; |z|<2.2
flight-length > 0.3 || <0.2 |M MKs|< 12 MeV if both trks have SVD hits: Zdist<1.2 otherwise: Zdist<10 ; r>0.015 ; ||<0.1 continuum-bkgd suppression Fisher 5 SFW moments costhrust pt |particles with thrust>60o cosB B candidate production angle
L = PDF( fisher ) x PDF(cosB) Fisher SFW costhrust major minor use: R maj 2,4 & R 2,3,4 pt| PDF ( fisher ) i SFWi cos T | pt | 1, 5 Likelihood Ratio
Fisher cosB cut LR = Lsig/(Lsig+ Lqq) K* and charm veto 0 10 suppressed by an angular c momentum barrier backgrounds commonly have K*s veto events with K*: |MK M K* |>50 MeV also veto events with charm:
|MK M D |>10 MeV |MKKs M Ds |>10 MeV Look at K KsK combinations Select events in the E Mbc signal box M(KSK) for signal-box evts (B+ K KS K + B0KS KSKcombined) 1.5-entries/evnt 100 evts 28 evts 2-entries/evnt
38 evts ? c properties M = 3653 9 MeV = 30 +44 -?? MeV = 3.8
Lecture 4: Probe & primer design Objective of probe design: Select a complementary oligonucleotide sequence that is completely specific to a region of the target sequences which has at least one mismatch to the same region in all other (nontarget)...
Ecclesiastes 3:18-21 18 I said in my heart with regard to the children of man that God is testing them that they may see that they themselves are but beasts. 19 For what happens to the children of man and...
Phylum Mollusca Gastropods (Snails, slugs) ... Locomotive foot ... centipedes Aquatic and land External skeleton Jointed bilateral appendages Segmented body Open circulatory system Many marine crustaceans Two pairs of antennae gills Class Copepoda Very abundant plankton Long first antennae Class...
V. Eastern Mediterranean. After Solomon's death the Kingdom was divided in two parts. After the Babylonians conquered Judah they made most of the people move to Babylon (Iran/Iraq) for 500 years- this is called the Diaspora.
Cove Day School. Red Valley, AZ. BIE ... Upon review of the SY 2013-14 and SY2014-15 payroll documentation the XXX School board signed and adopted the LEA assurance for the Part B application on April 1, 2014, stating the school...
Wilson Reading System Substep 2.2 Lesson 1 Blended Sounds: Look for "k" at the end of a word when it ends in lk sk Example: silk , milk risk , brisk Part 8 Written Work Dictation: sounds, words, sentences Part...