Download or read book Observation of inclusive B meson decays into A 1hn 1tnc baryons written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of Inclusive B Meson Decays Into lambda c Baryons written by ARGUS Collaboration and published by . This book was released on 1988 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of Exclusive B Meson Decays to Final States Containing a Charmed Baryon written by John Joseph O'Neill (Ph. D. in physics) and published by . This book was released on 1996 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Inclusive B Meson Decays Into Baryons written by ARGUS Collaboration and published by . This book was released on 1988 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of inclusive B meson decays into baryons written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of inclusive Duction in B meson decay written by Deutsches Elektronen-Synchrotron Hamburg and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book First Observation of Inclusive B Decays to the Charmed Strange Baryons sub C And sub C written by and published by . This book was released on 2003 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data collected in the region of the?(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring (CESR), they present the first observation of B mesons decaying into the charmed strange baryons?{sub c}° and?{sub c}. The authors find 79 ± 27?{sub c}° and 125 ± 28?{sub c}+ candidates from B decays, leading to product branching fractions of?({bar B} →?{sub c}°X)?(?{sub c}° →?−?+) = (0.144 ± 0.048 ± 0.021) x 10−3 and?({bar B} →?{sub c}+X)?(?{sub c}+ →?−?+?+) = (0.453 ± 0.096{sub -0.065}{sup +0.085}) x 10−3.

Download or read book Study of B Meson Decays to Final States with a Single Charm Baryon written by and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of B-meson decays to final states with a single charm baryon is presented based on data recorded by the BABAR detector at the Stanford Linear Accelerator Center. Although the B meson is the lightest bottom-flavored meson, it is heavy enough to decay to a baryon made of three quarks and an antibaryon made of three antiquarks. By studying the baryonic weak decays of the B meson, we can investigate baryon production mechanisms in heavy meson decays. In particular, we measure the rates of the decays B- → [Lambda]+c$\bar{p}$[pi]- and $\bar{B}$0 → [Lambda]+c$\bar{p}$. Comparing these rates, we confirm an observed trend in baryonic B decays that the decay with the lower energy release, B- → [Lambda]+c$\bar{p}$[pi]-, is favored over $\bar{B}$0 → [Lambda]+c$\bar{p}$. The dynamics of the baryon-antibaryon ([Lambda]+c$\bar{p}$) system in the three-body decay also provide insight into baryon-antibaryon production mechanisms. The B- → [Lambda]+c$\bar{p}$[pi]- system is a laboratory for searches for excited #c baryon states; we observe the resonant decays B- → [Sigma]c(2455) 0$\bar{p}$ and B- → [Sigma]c(2800) 0$\bar{p}$. This is the first observation of the decay B- → [Sigma]c(2800) 0$\bar{p}$; however, the mass of the observed #c(2800)0 state is inconsistent with previous measurements. Finally, we examine the angular distribution of the B- → [Sigma]c(2455) 0$\bar{p}$ decays and measure the spin of the B- → [Sigma]c(2455) 0$\bar{p}$ baryon to be J = 1/2, as predicted by the quark model.

Download or read book Observation and Study of the Baryonic B meson Decays B to D P Pbar written by and published by . This book was released on 2012 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results for B-meson decay modes involving a charm meson, protons, and pions using 455 x 106 B{bar B} pairs recorded by the BABAR detector at the SLAC PEP-II asymmetric-energy ee− collider. The branching fractions are measured for the following ten decays: {bar B}° → D°p{bar p}, {bar B}° → D*°p{bar p}, {bar B}° → D+p{bar p}?−, {bar B}° → D*+p{bar p}?−, B− → D°p{bar p}?−, B− → D*°pp?−, {bar B}° → D°p{bar p}?−?+, {bar B}° → D*°p{bar p}?−?+, B− → D+p{bar p}?−?−, and B− → D*+p{bar p}?−?−. The four B− and the two five-body B° modes are observed for the first time. The four-body modes are enhanced compared to the three- and the five-body modes. In the three-body modes, the M(p{bar p}) and M(D{sup (*)0}p) invariant mass distributions show enhancements near threshold values. In the four-body mode {bar B}° → D+p{bar p}?−, the M(p?−) distribution shows a narrow structure of unknown origin near 1.5GeV/c2. The distributions for the five-body modes, in contrast to the others, are similar to the expectations from uniform phase-space predictions.

Download or read book First Observation of Inclusive B Decays to the Charmed Strange Baryons Xi sub C sup 0 And Xi sub C sup written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data collected in the region of the[Upsilon](4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring (CESR), they present the first observation of B mesons decaying into the charmed strange baryons[Xi][sub c][sup 0] and[Xi][sub c][sup+]. The authors find 79[+-] 27[Xi][sub c][sup 0] and 125[+-] 28[Xi][sub c][sup+] candidates from B decays, leading to product branching fractions of[Beta]([bar B][yields][Xi][sub c][sup 0]X)[Beta]([Xi][sub c][sup 0][yields][Xi][sup -][pi][sup+])= (0.144[+-] 0.048[+-] 0.021) x 10[sup -3] and[Beta]([bar B][yields][Xi][sub c][sup+]X)[Beta]([Xi][sub c][sup+][yields][Xi][sup -][pi][sup+][pi][sup+])= (0.453[+-] 0.096[sub -0.065][sup+0.085]) x 10[sup -3].

Download or read book Observation And Study of B Meson Decays with Lambda C Baryons with the BaBar Detector written by and published by . This book was released on 2013 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Inclusive Baryon Production in B Meson Decays written by ARGUS Collaboration and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of inclusive baryon production in B meson decays written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of B Meson Decays to Ppbarh Final States written by Tetiana B. Hryn'ova and published by . This book was released on 2006 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: B mesons are unique among well-established non-quarkonium mesons in their ability to decay into baryons. Baryonic B decays offer a wide range of interesting areas of study: they can be used to test our theoretical understanding of rare decay processes involving baryons, search for direct CP violation and study low-energy QCD. This thesis presents measurements of branching fractions and a study of the decay dynamics of the charmless three-body decays of B meson into p{bar p}h final states, where h = {pi}{sup +}, K{sup +}, K{sub S}{sup 0}, K*{sup 0} or K*{sup +}. With a sample of 232 million {Upsilon}(4S) {yields} B{bar B} events collected with the BaBar detector, we report the first observation of the B {yields} p{bar p}K*{sup 0} decay, and provide improved measurements of branching fractions of the other modes. The distribution of the three final-state particles is of particular interest since it provides dynamical information on the possible presence of exotic intermediate states such as the hypothetical pentaquark states {Theta}*{sup ++} and {Theta}{sup +}in the m{sub pK{sup +}} and m{sub pK{sub S}{sup 0}} spectra, respectively, or glueball states (such as the tensor glueball f{sub J}(2220)) in the m{sub p{bar p}} spectrum. No evidence for exotic states is found and upper limits on the branching fractions are set. An enhancement at low p{bar p} mass is observed in all the B {yields} p{bar p}h modes, and its shape is compared between the decay modes and with the shape of the time-like proton form factor. A Dalitz plot asymmetry in B {yields} p{bar p}K{sup +} mode suggests dominance of the penguin amplitude in this decay and disfavors the possibility that the low mass p{bar p} enhancement originates from the presence of a resonance below threshold (such as the recently seen baryonium candidate at 1835 MeV/c{sup 2}). We also identify decays of the type B {yields} X{sub c{bar c}}h {yields} p{bar p}h, where h = K{sup +}, K{sub S}{sup 0}, K*{sup 0} or K*{sup +}, and X{sub c{bar c}} = {eta}{sub c} or J/{psi}. In particular, we report on the evidence of the B {yields} {eta}{sub c}K*{sup +} decay and provide a measurement of the width of {eta}{sub c}.

Download or read book Observation of Exclusive B Decays to Final States Containing a Charmed Baryon written by and published by . This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data collected in the region of the?(4S) resonance with the CLEO-II detector, they report on the first observation of exclusive decays of the B meson to final states with a charmed baryon. They have measured the branching fractions?(B− →?{sub c}{bar p}?−) = (0.62{sub -0.20}{sup +0.23} ± 0.11 ± 0.10) x 10−3 and?({bar B}° →?{sub c}+{bar p}?+?−) = (1.33{sub -0.42}{sup +0.46} ± 0.31 ± 0.21) x 10−3. In addition, they report upper limits for final states of the form {bar B} →?{sub c}+{bar p}(n?) and?{sub c}+{bar p}(n?)?° where (n?) denotes up to four charged pions.

Download or read book A Search for Charmless Baryonic B Meson Decays at CLEO written by Eric Ashton Eckhart and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: We search for the decays of $B$ mesons to charmless final states involving a baryon and an anti-baryon using 9.2 fb -1 of e + e - annihilation data taken on the?(4s) resonance with the CLEO II and CLEO II. V detectors, and 6.2 fb -1 from CLEO III. We perform an extended maximum likelihood analysis of the data to determine signal yields. We report an observation of the decay mode B - -> p anti-p K - and measure its branching fraction to be (5.88 +2.86 -2.21 (stat.) +1.12 -0.19 (syst.)) x 10 -6 . We find no statistically significant signals for our other modes and establish 90% C.L. upper limits of BR(B -> p anti-p) 1.4 x 10 -6, BR(B - anti-p?) 1.5 x 10 -6, BR(B -? anti-?) 1.2 x 10 -6, and BR(B - anti-p?p +)

Download or read book Observation of B to B 1 K0 and Search for B meson Decays to B 10K0 and B 1pi0 written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of searches for decays of B mesons to final states with a b1 meson and a neutral pion or kaon. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465 million B{bar B} pairs produced in ee− annihilation. The results for the branching fractions are, in units of 10−6, [Beta](B 2!b1+K°) = 9.6 ± 1.7 ± 0.9, [Beta](B° 2!b1°K°) = 5.1 ± 1.8 ± 0.5 (