Measurement Of The Dipion Mass Spectrum In The Decay X 3872 J Psi Pi Pi At The Cdf Ii Experiment
DOWNLOAD
Download Measurement Of The Dipion Mass Spectrum In The Decay X 3872 J Psi Pi Pi At The Cdf Ii Experiment PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Measurement Of The Dipion Mass Spectrum In The Decay X 3872 J Psi Pi Pi At The Cdf Ii Experiment book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 2 J Psi Pi Pi At The Cdf Ii Experiment
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2005
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 2 J Psi Pi Pi At The Cdf Ii Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
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.
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 J Psi Pi Pi At The Cdf Ii Experiment
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2005
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 J Psi Pi Pi At The Cdf Ii Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
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.
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 Right Arrow J Psi Pi Pi At The Cdfii Experiment
DOWNLOAD
Author : Alexander Yurevich Rakitin
language : en
Publisher:
Release Date : 2005
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
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.
Measurement Of The Dipion Mass Spectrum In X 3872 J Psi Pi Pi Decays
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2005
Measurement Of The Dipion Mass Spectrum In X 3872 J Psi Pi Pi Decays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
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.
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 U2192 J At The Cdf Ii Experiment
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2005
Measurement Of The Dipion Mass Spectrum In The Decay X 3872 U2192 J At The Cdf Ii Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
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.
Study Of The B J Psi K Pi Pi Decay And Measurement Of The B X 3872 K Branching Fraction
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2004
Study Of The B J Psi K Pi Pi Decay And Measurement Of The B X 3872 K Branching Fraction written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
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 -])
Observation Of The Decay B C J Psi Pi And Measurement Of The B C Mass
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2007
Observation Of The Decay B C J Psi Pi And Measurement Of The B C Mass written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
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.
Cdf Grid Computing And The Decay X 3872 J Psi Pi Pi With J Psi E E
DOWNLOAD
Author : Ulrich Kerzel
language : en
Publisher:
Release Date : 2005
Cdf Grid Computing And The Decay X 3872 J Psi Pi Pi With J Psi E E written by Ulrich Kerzel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
The main aim of physics research is to obtain a consistent description of nature leading to a detailed understanding of the phenomena observed in experiments. The field of particle physics focuses on the discovery and understanding of the fundamental particles and the forces by which they interact with each other. Using methods from group theory, the present knowledge can be mathematically described by the so-called ''Standard Model'', which interprets the fundamental particles (quarks and leptons) as quantum-mechanical fields interacting via the electromagnetic, weak and strong force. These interactions are mediated via gauge particles such as the photon (for the electromagnetic force), W{sup {+-}} and Z{sup 0} (for the weak force) and gluons (for the strong force). Gravitation is not yet included in this description as it presently cannot be formulated in a way to be incorporated in the Standard Model. However, the gravitational force is negligibly small on microscopic levels. The validity of this mathematical approach is tested experimentally by accelerating particles such as electrons and protons, as well as their antiparticles, to high energies and observing the reactions as these particles collide using sophisticated detectors. Due to the high energy of the particles involved, these detectors need to be as big as a small house to allow for precision measurements. Comparing the predictions from theory with the analyzed reactions observed in these collisions, the Standard Model has been established as a well-founded theory. Precision measurements from the four experiments (Aleph, Delphi, Opal, L3) the Large Electron Positron collider (LEP), operated at CERN during the years 1989-2000, allow the determination of the Standard Model parameters with enormous accuracy.
Search For A Charged Partner Of The X 3872 In The B Meson Decay B To X K X To J Psi Pi Pi0
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2005
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Measurement Of The Cp Violating Phase Phis Using Bs J Psi Phi And Bs J Psi Pi Pi Decays With The Lhcb Experiment
DOWNLOAD
Author : Christian Linn
language : en
Publisher:
Release Date : 2013
Measurement Of The Cp Violating Phase Phis Using Bs J Psi Phi And Bs J Psi Pi Pi Decays With The Lhcb Experiment written by Christian Linn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Measurement categories.