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Measurement Of Mass And Width Of The Excited Charmed Meson States D01 And D02 At Cdf
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Book Synopsis Measurement of Mass and Width of the Excited Charmed Meson States D0(1) and D*0(2) at CDF. by :
Download or read book Measurement of Mass and Width of the Excited Charmed Meson States D0(1) and D*0(2) at CDF. written by and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes a measurement of the mass and of the width of two neutral narrow resonances D1° and D*2°, both composed of a charm quark and an up antiquark. The difference with respect to the well-known resonance D°, also neutral and with the same quark composition, is that the two quarks have an orbital momentum 1, which increases their binding energy. Therefore the mass is larger than that of the D°. Since the relative orientation of the spin is the same, in the limit of very large charm mass, the masses of these resonances should be the same; their small difference is predicted by theory and therefore important to measurement to distinguish the different models. These states have been observed in their decay into a kaon and three pions; two of these particles are required to originate from a displaced vertex with respect to the primary interaction vertex, to account for the longer lifetime of the charmed mesons. The resonances parameters have been extracted using a fitting procedure accounting for the expected resonance shape, including effects from detector resolution and background, providing a new best single measurement of the D1° and D*2° masses and a competitive measurement of their widths.
Book Synopsis Measurement of Orbitally Excited D-mesons at CDF II. by : Igor V. Gorelov
Download or read book Measurement of Orbitally Excited D-mesons at CDF II. written by Igor V. Gorelov and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of the first measurement of {sup 3}P orbitally excited neutral D-meson states, D*{sub 2}{sup 0} and D{sub 1}{sup 0}, produced in hadron collisions at the Tevatron are presented. Using data from the displaced track trigger, CDF II collects a large sample of these states in decay modes D*{sup +} {pi}{sup -}, D{sup +} {pi}{sup -}. Masses and widths of both states have been measured with precision better than or comparable to that of the world average.
Book Synopsis Meson-mass Measurements at the University of California Radiation Laboratory by : Walter H. Barkas
Download or read book Meson-mass Measurements at the University of California Radiation Laboratory written by Walter H. Barkas and published by . This book was released on 1949 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Orbitally Excited D^**_(s) and B^** Mesons at Cdf and by : Jennifer Pursley
Download or read book Studies of Orbitally Excited D^**_(s) and B^** Mesons at Cdf and written by Jennifer Pursley and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a large data sample of p{bar p} collisions at {radical}s = 1.96 TeV recorded by the CDF and D0 detectors operating at Fermilab Tevatron, the orbitally excited B mesons B{sub 1} and B*{sub 2} are observed directly as two separate states in fully reconstructed decays to B{sup (*)}{pi}. The masses and the mass differences between the states are presented. In the charm system, the orbitally excited D mesons D{sub 1} and D*{sub 2} are observed in fully reconstructed decays to D{sup (*)}{pi}. Measurements of the product branching rates of semileptonic decays B {yields} {bar D}**{mu}{sup +}{nu}{sub {mu}}X and their ratio are presented. They also present the observation of the semileptonic decays B{sub s} {yields} {mu}{nu}D**{sub s} where the excited D**{sub s} states are reconstructed in the mode D**{sub s} {yields} D*K{sub S}{sup 0}.
Book Synopsis Measurement of Resonance Parameters of Orbitally Excited Narrow B0̂ Mesons by :
Download or read book Measurement of Resonance Parameters of Orbitally Excited Narrow B0̂ Mesons written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report a measurement of resonance parameters of the orbitally excited (L = 1) narrow B° mesons in decays to B{sup (*)+}?− using 1.7 fb−1 of data collected by the CDF II detector at the Fermilab Tevatron. The mass and width of the B*2° state are measured to be m(B*2°) = 5740.2{sub -1.8}{sup +1.7}(stat.){sub -0.8}{sup +0.9}(syst.) MeV/c2 and?(B*2°) = 22.7{sub -3.2}{sup +3.8}(stat.){sub -10.2}{sup +3.2}(syst.) MeV/c2. The mass difference between the B*2° and B1° states is measured to be 14.9{sub -2.5}{sup +2.2}(stat.){sub -1.4}{sup +1.2}(syst.) MeV/c2, resulting in a B1° mass of 5725.3{sub -2.2}{sup +1.6}(stat.){sub -1.5}{sup +1.4}(syst.) MeV/c2. This is currently the most precise measurement of the masses of these states and the first measurement of the B*2° width.
Book Synopsis Measurement of the Mass and Width of the Ds1(2536)+ Meson by :
Download or read book Measurement of the Mass and Width of the Ds1(2536)+ Meson written by and published by . This book was released on 2011 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The decay width and mass of the D{sub s1}(2536) meson are measured via the decay channel D{sub s1}+ 2!D*+ K{sub S}° using 385 fb−1 of data recorded with the BABAR detector in the vicinity of the [Upsilon](4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is [Gamma](D{sub s1}+) = 0.92 ± 0.03 (stat.) ± 0.04 (syst.)MeV. For the mass, a value of m(D{sub s1}+) = 2535.08 ± 0.01 (stat.) ± 0.15 (syst.)MeV/c2 is obtained. The mass difference between the D{sub s1}+ and the D*+ is measured to be m(D{sub s1}+)-m(D*+) = 524.83 ± 0.01 (stat.) ± 0.04 (syst.)MeV/c2, representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D{sub s1}+ meson is confirmed.
Book Synopsis Measurement of the Mass of the D0 Meson by :
Download or read book Measurement of the Mass of the D0 Meson written by and published by . This book was released on 2013 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Leaf of Calycadenia and Its Glandular Appendages by : Sherwin John Carlquist
Download or read book The Leaf of Calycadenia and Its Glandular Appendages written by Sherwin John Carlquist and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the D*(2010)+ Meson Width and the D*(2010)+ - D0 Mass Difference by :
Download or read book Measurement of the D*(2010)+ Meson Width and the D*(2010)+ - D0 Mass Difference written by and published by . This book was released on 2013 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combination of CDF and D0 $W$-Boson Mass Measurements by :
Download or read book Combination of CDF and D0 $W$-Boson Mass Measurements written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Precision Measurement of the Ds1 (2536)+ Meson Mass and Decay Width by : BABAR Collaboration
Download or read book A Precision Measurement of the Ds1 (2536)+ Meson Mass and Decay Width written by BABAR Collaboration and published by . This book was released on 2006 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The decay width and the mass of the D{sub s1}(2536){sup {+-}} have been measured via the decay channel D{sub s1}{sup {+-}} {yields} D*{sup {+-}}K{sub S}{sup 0} using 232 fb{sup -1} of data collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} storage ring. The result for the decay width is {Lambda}(D{sub s1}{sup {+-}}) = (1.03 {+-} 0.05 {+-} 0.12) MeV/c{sup 2}, with the first error denoting the statistical uncertainty and the second one the systematic uncertainty. For the mass, a value of m(D{sub s1}{sup {+-}}) = (2534.85 {+-} 0.02 {+-} 0.40) MeV/c{sup 2} has been obtained. The systematic error is dominated by the uncertainty on the D*{sup {+-}} mass. The mass difference between the D{sub s1}{sup {+-}} and D*{sup {+-}} has been measured to be {Delta}m = (524.85 {+-} 0.02 {+-} 0.04) MeV/c{sup 2}.
Book Synopsis A Measurement of the Mass, Full Width, and Radiative Width of the B+(1237) Meson by : Bruce David Collick
Download or read book A Measurement of the Mass, Full Width, and Radiative Width of the B+(1237) Meson written by Bruce David Collick and published by . This book was released on 1984 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combination of CDF and D0 Results on the W Boson Mass and Width by :
Download or read book Combination of CDF and D0 Results on the W Boson Mass and Width written by and published by . This book was released on 2008 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results on the direct measurements of the W-boson mass and width, based on the data collected by the Tevatron experiments CDF and D− at Fermilab are summarized and combined. The CDF Run-0 (1988-1889) and Run-I (1992-1995) results have been re-averaged using the BLUE method and combined with Run-I D− results and the latest published results from CDF taken from the first period of Run-II (2001-2004). The results are corrected to have consistency between the parton distribution functions and electroweak parameters. The resulting Tevatron averages for the mass and total decay width of the W boson are: M{sub W} = 80432 ± 39 MeV and [Lambda]{sub W} = 2056 ± 62 MeV. The inclusion of a preliminary Run-II measurement of [Lambda]{sub W} from D−0 gives [Lambda]{sub W} = 2050 ± 58 MeV.
Book Synopsis Even- and Odd-Parity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory by :
Download or read book Even- and Odd-Parity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We derive mass formulae for the ground state, J{sup P} = 0− and 1−, and first excited even-parity, J{sup P} = 0 and 1, charmed mesons including one loop chiral corrections and [Omicron](1/m{sub c}) counterterms in heavy hadron chiral perturbation theory. We show a variety of fits to the current data. We find that certain parameter relations in the parity doubling model are not renormalized at one loop, providing a natural explanation for the equality of the hyperfine splittings of ground state and excited doublets.
Book Synopsis Precision Measurement of the Mass and Width of the W Boson at CDF by : Sarah Alam Malik
Download or read book Precision Measurement of the Mass and Width of the W Boson at CDF written by Sarah Alam Malik and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Lifetimes of the Neutral and Charged D Mesons by : Larry Donnie Gladney
Download or read book Measurement of the Lifetimes of the Neutral and Charged D Mesons written by Larry Donnie Gladney and published by . This book was released on 1985 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of the masses and lifetimes of the charmed mesons DO, D+ and D+s by : Silvia Barlag
Download or read book Measurements of the masses and lifetimes of the charmed mesons DO, D+ and D+s written by Silvia Barlag and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
