scholarly journals Studies of Inclusive Hadron Production at BABAR

2015 ◽  
Vol 37 ◽  
pp. 1560065
Author(s):  
Ray F. Cowan
Keyword(s):  
Hadron Production ◽  
Inclusive Production ◽  
Full Data ◽  
Clean Environment ◽  
Momentum Spectra ◽  
B Factory ◽  
Azimuthal Asymmetries ◽  
Babar Detector ◽  
Deuteron Production

The clean environment of the e+e- collisions provided by the B-factory PEP-II and the high performances of the BABAR detector allow for precise measurements of the properties of inclusive hadron production. We present recent results obtained using the full data sample of nearly 500 fb-1 on measurements of the inclusive light hadrons momentum spectra, and on anti-deuteron production from decays of bottomonium states, and from continuum e+e- annihilation. We also present a measurement of the azimuthal asymmetries induced by the Collins effect in inclusive production of pion pairs in e+e- → ππX annihilation, where the two pions are produced in opposite hemispheres.

scholarly journals Study of $B^- \to D^*_2(2460)^0 \pi^-$ and $B^- \to D_1(2420)^0 \pi^-$ Decays

2005 ◽  
Vol 20 (16) ◽  
pp. 3698-3700 ◽  
Author(s):  
◽  
Vance O. Eschenburg
Keyword(s):  
Heavy Quark ◽  
B Mesons ◽  
P Wave ◽  
Effective Theory ◽  
Heavy Quark Effective Theory ◽  
Preliminary Results ◽  
B Factory ◽  
Babar Detector

We report on a study of B mesons decaying into one of the narrow P -wave charm resonances, [Formula: see text] and D1(2420)0. Our preliminary results are based on 89 million [Formula: see text] pairs collected with the BABAR detector at the PEP-II asymmetric B Factory. Our study will be useful in the investigation of the properties of Heavy Quark Effective Theory.

pT spectra of charged hadrons in proton–proton collisions at s = 200 GeV

2019 ◽  
Vol 34 (19) ◽  
pp. 1950148 ◽  
Author(s):  
M. Ajaz ◽  
Maryam
Keyword(s):  
Transverse Momentum ◽  
Star Collaboration ◽  
Hadron Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Production Models ◽  
Momentum Spectra ◽  
200 Gev ◽  
Transverse Momentum Spectra ◽  
Proton Proton Collisions

The transverse momentum spectra of [Formula: see text] mesons, protons and antiprotons produced in proton–proton collisions at 200 GeV with hadron production models are reported. Two tunes of EPOS (EPOS1.99 and EPOS-LHC), three tunes of QGSJET (QGSJETI, QGSJETII-03, QGSJETII-04), DPMJET and HIJING models are used to obtain the spectra. The results are compared with the measurements of STAR collaboration obtained at mid-rapidity of [Formula: see text] in [Formula: see text] range of [Formula: see text]. All models reproduce the ratios [Formula: see text] and [Formula: see text] at low [Formula: see text] but could not predict well at high [Formula: see text]. In addition, EPOS tunes and QGSJET tunes predict well the spectra of [Formula: see text] meson and the ratios [Formula: see text] and [Formula: see text] at low [Formula: see text]. The HIJING and the QGSJET (tune I only) could reproduce all the spectra and all the ratios at a satisfactory level of precision and were found good among the models considered in the current study at RHIC energy.

A SEARCH FOR THE DECAY B+ → τ+ντ AT BABAR

2005 ◽  
Vol 20 (16) ◽  
pp. 3695-3697
Author(s):  
◽  
MOUSUMI DATTA
Keyword(s):  
Confidence Level ◽  
Branching Fraction ◽  
Upper Limit ◽  
B Factory ◽  
Babar Detector

We present a search for the decay B+ → τ+ντ in [Formula: see text] decays recorded with the BABAR detector at the SLAC PEP-II B-Factory. A sample of events with one reconstructed exclusive semi-leptonic B decay [Formula: see text] is selected, and in the recoil a search for B+ → τ+ ντ signal is performed. The τ is identified in the following channels: [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text]. We find no evidence of signal, and we set a preliminary upper limit on the branching fraction of [Formula: see text] at the 90% confidence level (CL). This result is then combined with a statistically independent BABAR search for B+ → τ+ντ to give a combined preliminary limit of [Formula: see text] at 90% CL.

scholarly journals Saturation in inclusive production beyond leading logarithm accuracy

2016 ◽  
Vol 31 (24) ◽  
pp. 1630039 ◽  
Author(s):  
Anna M. Staśto ◽  
David Zaslavsky
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Recent Progress ◽  
Nonlinear Evolution ◽  
High Energy ◽  
Hadron Production ◽  
Suitable Choice ◽  
Inclusive Production ◽  
Leading Order ◽  
Leading Logarithm

We review the recent progress on the calculations on the inclusive forward hadron production within the saturation formalism. After introducing the concept of perturbative parton saturation and nonlinear evolution we discuss the formalism for the forward hadron production at high energy in the leading and next-to-leading order. Numerical results are presented and compared with the experimental data on forward hadron production in [Formula: see text] and [Formula: see text]. We discuss the problem of the negativity of the NLO cross-section at high transverse momenta, study its origin in detail and present possible improvements which include the corrected kinematics and the suitable choice of the rapidity cutoff.

Partial Reconstruction of $B^0 \to D_s^{*+}D^{*-}$ Decays and Measurement of the $D_s^+ \to \phi\pi^+$ Branching Fraction

2005 ◽  
Vol 20 (16) ◽  
pp. 3712-3715
Author(s):  
Silvia Pennazzi
Keyword(s):  
Branching Fraction ◽  
Branching Fractions ◽  
Reconstruction Technique ◽  
Preliminary Results ◽  
Partial Reconstruction ◽  
Full Reconstruction ◽  
B Factory ◽  
Babar Detector

We present preliminary results on the branching fractions [Formula: see text] and [Formula: see text], based on a data sample of approximately [Formula: see text] events collected by the BABAR detector at the PEP-II e+e-B–factory. We reconstruct B0 mesons using both a partial and a full reconstruction technique. We obtain the following preliminary results: [Formula: see text] where the first error in each measurement is statistical, the second systematic.

scholarly journals B DECAYS TO FINAL STATES INCLUDING $D^{(*)}_s$ AND D*

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 440-443 ◽  
Author(s):  
◽  
BENJAMIN BRAU
Keyword(s):  
Branching Fraction ◽  
Branching Fractions ◽  
Reconstruction Technique ◽  
Final States ◽  
B Decays ◽  
Partial Reconstruction ◽  
Momentum Spectra ◽  
Babar Detector

The e+e- annihilation data recorded with the BABAR detector has been used to study B decays to [Formula: see text] and D*± mesons. The production fraction of inclusive [Formula: see text] and the corresponding momentum spectra have been determined. Exclusive decays [Formula: see text] have been identified with a partial reconstruction technique and their branching fractions have been measured. We also report branching fraction measurements for the exclusive hadronic modes B0 → D*- π+ and B0 → D*- ρ+.

scholarly journals Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs ine+e−Annihilation at Belle

2006 ◽  
Vol 96 (23) ◽  
Author(s):  
R. Seidl ◽  
K. Hasuko ◽  
K. Abe ◽  
I. Adachi ◽  
H. Aihara ◽  
...  
Keyword(s):  
Inclusive Production ◽  
Azimuthal Asymmetries ◽  
Hadron Pairs

scholarly journals Collins azimuthal asymmetries of hadron production inside jets

2017 ◽  
Vol 774 ◽  
pp. 635-642 ◽  
Author(s):  
Zhong-Bo Kang ◽  
Alexei Prokudin ◽  
Felix Ringer ◽  
Feng Yuan
Keyword(s):  
Hadron Production ◽  
Azimuthal Asymmetries
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