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Measurement Of The Dipion Mass Spectrum In The Decay X3872 Right Arrow J Psi Pi Pi At The Cdfii Experiment
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Book Synopsis Measurement of the Dipion Mass Spectrum in the Decay X(3872) [right Arrow] J/ [psi] [pi]+ [pi]− at the CDFII Experiment by : Alexander Yurevich Rakitin
Download or read book Measurement of the Dipion Mass Spectrum in the Decay X(3872) [right Arrow] J/ [psi] [pi]+ [pi]− at the CDFII Experiment written by Alexander Yurevich Rakitin and published by . This book was released on 2005 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the dipion mass spectrum in the decay X(3872) [right arrow] J/ [psi] [pi]+ [pi]− using a 360 pb-1 sample of pp collisions at av [square root]s = 1.96 TeV collected with the CDF II detector at the Fermnilab Tevatron Collider. As a benchmark, we also extract the dipion mass distribution for [psi] (2s) [right arrow] J/ [psi] [pi]+ [pi]− decay. The X(3872) dipion mass spectrum is compared to QCD multipole expansion predictions for various charmonium states, as well as to the hypothesis [right arrow] J/ [psi] po. We find that the measured spectrum is compatible with 3S1 charmonium decaying to J/ [psi] [pi]+ [pi]− - and with the X(3872) - J/po hypothesis. There is, however, no 3S1 charmonium state available for assignment to the X(3872). The multipole expansion calculations for 1P1 and 3DJ states are in clear disagreement with the X(3872) data. For the [psi] (2S) the data agrees well with previously published results and to multipole expansion calculations for 3S1 charmonium. Other, non-charmonium, models for the X(3872) are described too. We conclude that since the dipion mass spectrum for X(3872) is compatible with J/pO hypothesis, the X(3872) should be C-positive. This conclusion is supported by recent results from Belle Collaboration which observed X(3872) -+ J/7y decay. We argue that if X(3872) is a charmonium, then it should be either ... state, decaying into J/ [psi] [pi]+ [pi]− in violation of isospin conservation. A non-charmonium assignment, such as DD* molecule, is also quite possible.
Book Synopsis Measurement of the Dipion Mass Spectrum in the Decay X(3872) 2!J/[Psi] [pi]+ [pi]- at the CDF II Experiment by :
Download or read book Measurement of the Dipion Mass Spectrum in the Decay X(3872) 2!J/[Psi] [pi]+ [pi]- at the CDF II Experiment written by and published by . This book was released on 2005 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author presents a measurement of the dipion mass spectrum in the decay X(3872) → J/[Psi][pi]+ [pi]- using a 360 pb-1 sample of p$\bar{p}$ collisions at √s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron Collider. As a benchmark, they also extract the dipion mass distribution for [Psi](2S) → J/[Psi][pi]+ [pi]- decay. The X(3872) dipion mass spectrum is compared to QCD multipole expansion predictions for various charmonium states, as well as to the hypothesis X(3872) → J/[Psi][rho]0. They find that the measured spectrum is compatible with 3S1 charmonium decaying to J/[Psi][pi]+ [pi]- and with the X(3872) → J/[Psi][rho]0 hypothesis. There is, however, no 3S1 charmonium state available for assignment to the X(3872). The multipole expansion calculations for 1P1 and 3DJ states are in clear disagreement with the X(3872) data. For the [Psi](2S) the data agrees well with previously published results and to multipole expansion calculations for 3S1 charmonium. Other, non-charmonium, models for the X(3872) are described too. They conclude that since the dipion mass spectrum for X(3872) is compatible with J/[Psi][rho]0 hypothesis, the X(3872) should be C-positive. This conclusion is supported by recent results from Belle Collaboration which observed X(3872) → J/[Psi][gamma] decay. They argue that if X(3872) is a charmonium, then it should be either 1D2± or 23P1++ state, decaying into J/[Psi][pi]+ [pi]- in violation of isospin conservation. A non-charmonium assignment, such as D$\bar{D}$* molecule, is also quite possible.
Book Synopsis Measurement of the Dipion Mass Spectrum in the Decay X(3872) -] J/psi Pi+ Pi- at the CDF II Experiment by :
Download or read book Measurement of the Dipion Mass Spectrum in the Decay X(3872) -] J/psi Pi+ Pi- at the CDF II Experiment written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the dipion mass spectrum in the decay X(3872) [yields] J/[psi][pi][sup +][pi][sup -] using a 360 pb[sup -1] sample of p[bar p] collisions at [radical]s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron Collider. As a benchmark, they also extract the dipion mass distribution for [psi](2S) [yields] J/[psi][pi][sup +][pi][sup -] decay. The X(3872) dipion mass spectrum is compared to QCD multipole expansion predictions for various charmonium states, as well as to the hypothesis X(3872) [yields] J/[psi]p[sup 0]. They find that the measured spectrum is compatible with [sup 3]S[sub 1] charmonium decaying to J/[psi][pi][sup +][pi][sup -] and with the X(3872) [yields] J/[psi]p[sup 0] hypothesis. There is, however, no [sup 3]S[sub 1] charmonium state available for assignment to the X(3872). The multipole expansion calculations for [sup 1]P[sub 1] and [sup 3]D[sub J] states are in clear disagreement with the X(3872) data. For the [psi](2S) the data agrees well with previously published results and to multipole expansion calculations for [sup 3]S[sub 1] charmonium. Other, non-charmonium, models for the X(3872) are described too. The authors conclude that since the dipion mass spectrum for X(3872) is compatible with J/[psi]p[sup 0] hypothesis, the X(3872) should be C-positive. This conclusion is supported by recent results from Belle Collaboration which observed X(3872) [yields] J/[psi][gamma] decay. They argue that if X(3872) is a charmonium, then it should be either 1[sup 1]D[sub 2-+] or 2[sup 3]P[sub 1++] state, decaying into J/[psi][pi][sup +][pi][sup -] in violation of isospin conservation. A non-charmonium assignment, such as D[bar D]* molecule, is also quite possible.
Book Synopsis Measurement of the Dipion Mass Spectrum in X(3872) ---] J/psi Pi+ Pi- Decays by :
Download or read book Measurement of the Dipion Mass Spectrum in X(3872) ---] J/psi Pi+ Pi- Decays written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors measure the dipion mass spectrum in X(3872) → J/???− decays using 360 pb−1 of {bar p}p collisions at √s = 1.96 TeV collected with the CDF II detector. The spectrum is fit with predictions for odd C-parity (3S1, 1P1, and 3D{sub J}) charmonia decaying to J/??+?−, as well as event C-parity states in which the pions are from?° decay. The latter case also encompasses exotic interpretations, such as a D°{bar D}*° molecule. Only the 3S1 and J/?? hypotheses are compatible with the data. Since 3S1 is untenable on other grounds, decay via J/?? is favored, which implies C = +1 for the X(3872). Models for different J/?-? angular momenta L are considered. Flexibility in the models, especially the introduction of?-? interference, enable good descriptions of the data for both L = 0 and 1.
Book Synopsis Measurement of the Dipion Mass Spectrum in the Decay X(3872) {u2192} J/? ?+ ?- at the CDF II Experiment by :
Download or read book Measurement of the Dipion Mass Spectrum in the Decay X(3872) {u2192} J/? ?+ ?- at the CDF II Experiment written by and published by . This book was released on 2005 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author presents a measurement of the dipion mass spectrum in the decay X(3872) → J/??+ ?- using a 360 pb-1 sample of p$ar{p}$ collisions at √s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron Collider. As a benchmark, they also extract the dipion mass distribution for ?(2S) → J/??+ ?- decay. The X(3872) dipion mass spectrum is compared to QCD multipole expansion predictions for various charmonium states, as well as to the hypothesis X(3872) → J/??0. They find that the measured spectrum is compatible with 3S1 charmonium decaying to J/??+ ?- and with the X(3872) → J/??0 hypothesis. There is, however, no 3S1 charmonium state available for assignment to the X(3872). The multipole expansion calculations for 1P1 and 3DJ states are in clear disagreement with the X(3872) data. For the ?(2S) the data agrees well with previously published results and to multipole expansion calculations for 3S1 charmonium. Other, non-charmonium, models for the X(3872) are described too. They conclude that since the dipion mass spectrum for X(3872) is compatible with J/??0 hypothesis, the X(3872) should be C-positive. This conclusion is supported by recent results from Belle Collaboration which observed X(3872) → J/?? decay. They argue that if X(3872) is a charmonium, then it should be either 1D2± or 23P1++ state, decaying into J/??+ ?- in violation of isospin conservation. A non-charmonium assignment, such as D$ar{D}$* molecule, is also quite possible.
Book Synopsis The X(3872) at the Tevatron by : G. Bauer
Download or read book The X(3872) at the Tevatron written by G. Bauer and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author reports results on the X(3872) from the Tevatron. Mass and other properties have been studied, with a focus on new results on the dipion mass spectrum in X {yields} J/{psi}{pi}{sup +}{pi}{sup -} decays. Dipions favor interpreting the decay as J/{psi}{rho}, implying even C-parity for the X. Modeling uncertainties do not allow distinguishing between S- and P-wave decays of the J/{psi}-{rho} mode. Effects of {rho}-{omega} interference in X decay are also introduced.
Book Synopsis A Study of the Dipion Production in the Reaction [pi]?p [arrow] [pi]?[pi]?n Between 1.6 and 2.4 GeV/c by : Andris Skuja
Download or read book A Study of the Dipion Production in the Reaction [pi]?p [arrow] [pi]?[pi]?n Between 1.6 and 2.4 GeV/c written by Andris Skuja and published by . This book was released on 1972 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the D_s Leptonic Decay Constant F_{D_s} and Observation of New Resonances Decaying to D^(*)pi by : Jose Feliciano Benitez
Download or read book Measurement of the D_s Leptonic Decay Constant F_{D_s} and Observation of New Resonances Decaying to D^(*)pi written by Jose Feliciano Benitez and published by Stanford University. This book was released on 2011 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The absolute branching fractions for the decays $D^-_s\rightarrow\ell^-\bar{\nu}_{\ell}$ ($\ell=e$, $\mu$, or $\tau$) are measured using a data sample corresponding to an integrated luminosity of 521 fb$^{-1}$ collected at center of mass energies near 10.58 GeV with the BABAR detector at the PEP-II $e^+e^-$ collider at SLAC. The number of $D_s^-$ mesons is determined by reconstructing the recoiling system $DKX\gamma$ in events of the type $e^+e^-{\rightarrow}DKXD^{*-}_s$, where $D^{*-}_s\rightarrow D^-_s\gamma$ and $X$ represents additional pions from fragmentation. The $D^-_s\rightarrow\ell^-\nu_{\ell}$ events are detected by full or partial reconstruction of the recoiling system $DKX\gamma\ell$. The following results are obtained: $B(D^-_s \to \mu^- \nu) = (6.02 \pm 0.38 \pm 0.34) \times 10^{-3}$, $B(D^-_s \to \tau^- \nu) = (5.00 \pm 0.35 \pm 0.49) \times 10^{-2}$, and $B(D^-_s \to e^- \nu)
Book Synopsis Study of the B- --] J/psi K- Pi+ Pi- Decay and Measurement of the B- --] X(3872) K- Branching Fraction by :
Download or read book Study of the B- --] J/psi K- Pi+ Pi- Decay and Measurement of the B- --] X(3872) K- Branching Fraction written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study the decay B[sup -] [yields] J/[psi]K[sup -][pi][sup +][pi][sup -] using 117 million B[bar B] events collected at the [Upsilon](4S) resonance with the BaBar detector at the PEP-II e[sup +]e[sup -] asymmetric-energy storage ring. They measure the branching fractions [Beta](B[sup -] [yields] J/[psi]K[sup -] [pi][sup +][pi][sup -]) = (116 [+-] 7(stat.) [+-] 9(syst.)) x 10[sup -5] and [Beta](B[sup -] [yields] X(3872)K[sup -]) x [Beta](X(3872) [yields] J/[psi][pi][sup +][pi][sup -]) = (1.28 [+-] 0.41) x 10[sup -5] and find the mass of the X(3872) to be 3873.4 [+-] 1.4MeV/c[sup 2]. They search for the h[sub c] narrow state in the decay B[sup -] [yields] h[sub c] K[sup -], h[sub c] [yields] J/[psi][pi][sup +][pi][sup -] and for the decay B[sup -] [yields] J/[psi]D[sup 0][pi][sup -], with D[sup 0] [yields] K[sup -][pi][sup +]. They set the 90% C.L. limits [Beta](B[sup -] [yields] h[sub c]K[sup -]) x [Beta](h[sub c] [yields] J/[psi][pi][sup +][pi][sup -])
Book Synopsis Study of the $\psi_2(3823)$ and $\chi_c1}(3872)$ States in $B^+ \rightarrow \left( J\psi\pi^+\pi^-\right)K^+$ Decays by : Roel Aaij
Download or read book Study of the $\psi_2(3823)$ and $\chi_c1}(3872)$ States in $B^+ \rightarrow \left( J\psi\pi^+\pi^-\right)K^+$ Decays written by Roel Aaij and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of B[sup 0]/Bbar[sup 0] [right Arrow]J/[psi] K(0 Over S) Decay Asymmetry Using Same-side B-flavor Tagging by :
Download or read book Measurement of B[sup 0]/Bbar[sup 0] [right Arrow]J/[psi] K(0 Over S) Decay Asymmetry Using Same-side B-flavor Tagging written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the time-dependent asymmetry in the rate for [anti B][sup 0] versus B[sup 0] decays to J/[psi]K[sup 0][sub s]. The data sample consists of 198 [+-] 17 B[sup 0]/[anti B][sup 0] decays collected by the CDF detector in p[anti p] collisions at the Fermilab Tevatron, where the initial b flavor has been determined by a same-side flavor tagging technique. This asymmetry is interpreted in the Standard Model as a measurement of the CP-violation parameter sin(2[beta]). Our analysis results in sin(2[beta]) = 1:8 [+-] 1:1(stat) [+-] 0:3(syst).
Book Synopsis Observation of the Decay B+-(c) ---] J/psi Pi+- and Measurement of the B+-(c) Mass by :
Download or read book Observation of the Decay B+-(c) ---] J/psi Pi+- and Measurement of the B+-(c) Mass written by and published by . This book was released on 2007 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The B{sub c}{sup ±} meson is observed through the decay B{sub c}{sup ±} → J/[psi] [pi]{sup ±}, in data corresponding to an integrated luminosity of 2.4 fb−1 recorded by the CDF II detector at the Fermilab Tevatron. A signal of 108 {+-} 15 candidates is observed, with a significance that exceeds 8[sigma]. The mass of the B{sub c}{sup {+-}} meson is measured to be 6275.6 {+-} 2.9(stat.) {+-} 2.5(syst.) MeV/c2.
Book Synopsis Experimental Measurement of the Decays [Greek Letter Eta Arrow Greek Letter Pi][Greek Letter Pi]−[gamma] and [Greek Letter Eta Arrow Greek Letter Pi]+[Greek Letter Pi]−[Greek Letter Pi]0 [gamma] by : Jon J. Thaler
Download or read book Experimental Measurement of the Decays [Greek Letter Eta Arrow Greek Letter Pi][Greek Letter Pi]−[gamma] and [Greek Letter Eta Arrow Greek Letter Pi]+[Greek Letter Pi]−[Greek Letter Pi]0 [gamma] written by Jon J. Thaler and published by . This book was released on 1972 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for a Charged Partner of the X (3872) in the B Meson Decay B to X- K, X- to J/psi Pi- Pi0 by :
Download or read book Search for a Charged Partner of the X (3872) in the B Meson Decay B to X- K, X- to J/psi Pi- Pi0 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of B Hadron Masses in Exclusive J/psi Decays with the CDF Detector by :
Download or read book Measurement of B Hadron Masses in Exclusive J/psi Decays with the CDF Detector written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for an X(3872) Charged Partner in the Decay Mode X- --] J/psi Pi- Pi0 in the B Meson Decays B0 --] X- K+ and B- --] X- Ks by :
Download or read book Search for an X(3872) Charged Partner in the Decay Mode X- --] J/psi Pi- Pi0 in the B Meson Decays B0 --] X- K+ and B- --] X- Ks written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have performed a search for a charged partner of the X(3872) decaying to J/[psi][pi][sup [+-]][pi][sup 0]. The results set upper limits on the product branching fractions of B([bar B][sup 0]/B[sup 0] --> X[sup [+-]]K[sup [-+]], X[sup [+-]] --> J/[psi][sup [+-]][pi][sup 0]) 5.2 x 10[sup -6] and B(B[sup [+-]]) -- X[sup [+-]]K[sup 0][sub s], X[sup [+-]] --> J/[psi][sup [+-]][pi][sup 0]
Book Synopsis Observation of the Radiative Decay J by :
Download or read book Observation of the Radiative Decay J written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The radiative decay J/psi .-->. .gamma. eta .pi pi. has been observed in data taken with the Crystal Ball detector at the SPEAR e/sup +/e− storage ring. In addition to the well-known eta', the eta .pi pi. mass spectrum shows a broad enhancement centered at approx. 1700 MeV. There is no explicit evidence for the l(1440) in the eta .pi pi. mass spectrum.
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