V. Tikhomirov

Publication List Details

Period

1982 - 2009

Number

249

Co-Authors

The pd --> ^3He eta pi0 reaction at T_p = 1450 MeV (2009)

Schoenning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., ...

The cross section for the pd --> ^3He eta pi0 reaction has been measured at a beam energy of 1450 MeV using the WASA detector at the CELSIUS storage ring and detecting one ^3He and four photons from...

Exclusive Measurements of pp -> dpi+pi0: Double-Pionic Fusion without ABC Effect (2009)

Kren, F., Bashkanov, M., Bogoslawsky, D., Calen, H., Clement, H., Demiroers, L., ...

Exclusive measurements of the reaction pp -> dpi+pi0 have been carried out at T_p = 1.1 GeV at the CELSIUS storage ring using the WASA detector. The isovector pi+pi0 channel exhibits no enhancement...

Two-Pion Production in Proton-Proton Collisions -- Experimental Total Cross Sections and their Isospin Decomposition (2009)

Skorodko, T., Bashkanov, M., Bogoslawsky, D., Calen, H., Clement, H., Doroshkevich, E., ...

The two-pion production in pp-collisions has been investigated at CELSIUS in exclusive measurements from threshold up to $T_p$ = 1.36 GeV. Total and differential cross sections have been obtained for...

Production of the omega meson in the pd -> He-3 omega reaction at 1450 MeV and 1360 MeV (2009)

Schonning, K., Bargholtz, C., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., ...

The production of omega mesons in the pd -> He-3 omega reaction has been studied at two energies near the kinematic threshold, T-p = 1450 MeV and T-p = 1360 MeV. The differential cross section was...

Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction (2009)

Keleta, S., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., ...

The results from the first kinematically complete measurement of the dd --> 4Hepipi reaction are reported. The aim was to investigate a long standing puzzle regarding the origin of the peculiar...

Production of the omega meson in the pd --> 3He omega reaction at 1450 MeV and 1360 MeV (2009)

Schonning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., ...

The production of $\omega$ mesons in the $pd \to{}^3$He$ \omega$ reaction has been studied at two energies near the kinematic threshold, $T_p=1450$ MeV and $T_p=1360$ MeV. The differential cross...

Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements (2008)

Bashkanov, M., Bargholtz, C., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., ...

The ABC effect - a puzzling low-mass enhancement in the $\pi\pi$ invariant mass spectrum - is well-known from inclusive measurements of two-pion production in nuclear fusion reactions. Here we report...

Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV (2008)

Schonning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., ...

The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with the pi0pi+pi- or...

The WASA Detector Facility at CELSIUS (2008)

Bargholtz, Chr., Bashkanov, M., Berłowski, M., Bondar, A., Bogoslawsky, D., Brodowski, W., ...

The WASA 4pi multidetector system, aimed at investigating light meson production in light ion collisions and eta meson rare decays at the CELSIUS storage ring in Uppsala is presented. A detailed...

Measurement of eta meson decays into lepton-antilepton pairs (2007)

Berłowski, CELSIUS/WASA Collaboration: M., Bargholtz, Chr., Bashkanov, M., Bogoslawsky, D., Bondar, A., Calén, H., ...

A search for rare lepton decays of the eta meson was performed using the WASA detector at CELSIUS. Two candidates for double Dalitz decay eta->e+e-e+e- events are reported with a background of...

Measurement of the Slope Parameter for the eta->3pi0 Decay in the pp->pp eta Reaction (2007)

Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., Demirörs, L., ...

The CELSIUS/WASA setup is used to measure the 3pi0 decay of eta mesons produced in pp interactions with beam kinetic energies of 1.36 and 1.45 GeV. The efficiency-corrected Dalitz plot and density...

$\bar d$ and $^3$He production in $\sqrt{s_{NN}}$ = 130 GeV Au + Au collisions (2007)

Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B.D., Anderson, M., ...

The first measurements of light antinucleus production in Au+Au collisions at RHIC are reported. The observed production rates for antideuterons and antihelions are much larger than in lower energy...

Evidence for a 'Narrow' Roper Resonance - the Breathing Mode of the Nucleon (2006)

Clement, H., Skorodko, T., Bashkanov, M., Bogoslawsky, D., Calen, H., Cappellaro, F., ...

All the time since its discovery the N$^*$(1440) baryon state, commonly known as Roper resonance, has been a state with many question marks - despite of its 4-star ranking in the particle data book....

Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect - Approaching a Puzzleby exclusive and Kinematically complete Measurements (2006)

Skorodko, T., Bashkanov, M., Bargholtz, C., Bogoslawsky, D., Calen, H., Cappellaro, F., ...

The ABC effect - a puzzling low-mass enhancement in the $\pi\pi$ invariant mass spectrum - is known from inclusive measurements of two-pion production in nuclear collisions, where it always showed...

Measurement of the eta->pi+pi-e+e- decay branching ratio (2006)

Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., ...

The reaction pd->3He eta at threshold was used to provide a clean source of eta mesons for decay studies with the WASA detector at CELSIUS. The branching ratio of the decay eta->pi+pi-e+e- is...

Inclusive $\pi^0$ spectra at high transverse momentum in d-Au collisions at RHIC (2006)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

Preliminary results on inclusive neutral pion production in d-Au collisions at $\sqrt{s_{NN}}$ in the pseudo-rapidity range $0

Event-wise mean ($p_t$) fluctuations in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV (2006)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

We present the first large-acceptance measurement of event-wise mean transverse momentum mean p_t fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy sqrt{s_{NN}}...

The pp -> pp pi pi pi reaction channels in the threshold region (2006)

Jacewicz, M., Koch, I., Bashkanov, M., Bogoslawsky, D., Calén, H., ...

The cross section for prompt neutral and charged three pion production in pp interactions was measured at excess energies in the range 160 - 217 MeV. That comprises the first measurement of the...

A simple view on convex analysis and its applications (2005)

Brinkhuis, J., Tikhomirov, V.

Our aim is to give a simple view on the basics and applications of convex analysis. The essential feature of this account is the systematic use of the possibility to associate to each convex...

Exclusive Measurements of $pd\to ^3He \pi\pi$ : the $ABC$ Effect Revisited (2005)

Bashkanov, M., Bogoslawsky, D., Calén, H., Cappellaro, F., Clement, H., Demiroers, L., ...

Exclusive measurements of the reactions $pd\to$ $^3He \pi^+ \pi^-$ and $pd\to$ $^3He \pi^0\pi^0$ have been carried out at $T_p=0.895$ GeV at the CELSIUS storage ring using the WASA detector. The...

Event-wise (Pt) fluctuations in Au-Au collisions at root sNN=130 GeV (2005)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We present the first large-acceptance measurement of event-wise mean transverse momentum < p(t)> fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy root...

Event-wise (Pt) fluctuations in Au-Au collisions at root sNN=130 GeV (2005)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We present the first large-acceptance measurement of event-wise mean transverse momentum < p(t)> fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy root...

Inclusive $\pi^0$ spectra at high transverse momentum in d-Au collisions at RHIC (2005)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

Preliminary results on inclusive neutral pion production in d-Au collisions at $\sqrt{s_{NN}}$ in the pseudo-rapidity range $0

Event-wise mean ($p_t$) fluctuations in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV (2005)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

We present the first large-acceptance measurement of event-wise mean transverse momentum mean p_t fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy sqrt{s_{NN}}...

$\pi - \Xi$ correlations in Au-Au collisions at STAR (2005)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

We present $\pi - \Xi$ correlation analysis in Au-Au collisions at $\sqrt{S_{NN}}=200Gev $ and $\sqrt{S_{NN}}=62.4GeV$, performed using the STAR detector at RHIC. A $\Xi^*$(1530) resonance signal is...

Inclusive $\pi^0$ spectra at high transverse momentum in d-Au collisions at RHIC (2005)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

Preliminary results on inclusive neutral pion production in d-Au collisions at $\sqrt{s_{NN}}$ in the pseudo-rapidity range $0

Event-wise mean ($p_t$) fluctuations in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV (2005)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

We present the first large-acceptance measurement of event-wise mean transverse momentum mean p_t fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy sqrt{s_{NN}}...

$\pi - \Xi$ correlations in Au-Au collisions at STAR (2005)

Adams, J., Adler, C., M. Aggarwal, M., Ahammed, Z., Amonett, J., D. Anderson, B., ...

We present $\pi - \Xi$ correlation analysis in Au-Au collisions at $\sqrt{S_{NN}}=200Gev $ and $\sqrt{S_{NN}}=62.4GeV$, performed using the STAR detector at RHIC. A $\Xi^*$(1530) resonance signal is...

Photon and neutral pion production in Au+Au collisions at sqrt(s_{NN}) = 130 GeV (2004)

Adams, J, Adler, C, Aggarwal, M M, Ahammed, Z, Amonett, J, Anderson, B D, ...

We report the first inclusive photon measurements about mid-rapidity (|y| photon photon decay to the inclusive photon spectrum decreases by 20% +/- 5% between pt = 1.65 GeV/c and pt = 2.4 GeV/c in...

Photon and neutral pion production in Au plus Au collisions at root s(NN)=130 GeV (2004)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We report inclusive photon measurements about midrapidity (\y\gammagamma decay to the inclusive photon spectrum decreases by 20%+/-5% between p(t)=1.65 GeV/c and p(t)=2.4 GeV/c in the most central...

Rapidity and centrality dependence of proton and antiproton production from Au-197+Au-197 collisions at root S-NN=130 GeV (2004)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We report on the rapidity and centrality dependence of proton and antiproton transverse mass distributions from Au-197+Au-197 collisions at roots(NN)=130 GeV as measured by the STAR experiment at the...

Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au plus Au collisions at root s(NN)=200 GeV (2004)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We present STAR measurements of the azimuthal anisotropy parameter v(2) and the binary-collision scaled centrality ratio R-CP for kaons and lambdas (Lambda+(&ULambda;) over bar) at midrapidity in...

Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics (2004)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We report the first observations of the first harmonic (directed flow, v(1)) and the fourth harmonic (v(4)), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au...

Identified particle distributions in pp and Au+Au collisions at root s(NN)=200 GeV (2004)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

Transverse mass and rapidity distributions for charged pions, charged kaons, protons, and antiprotons are reported for roots(NN)=200 GeV pp and Au+Au collisions at Relativistic Heary Ion Collider...

Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at root s=200 GeV (2004)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

Measurements of the production of forward high-energy pi(0) mesons from transversely polarized proton collisions at root200 GeV are reported. The cross section is generally consistent with...

Kaon production and kaon to pion ratio in Au+Au collisions at root(NN)-N-s=130 GeV (2004)

Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., Anderson, M., ...

Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au + Au collisions at root(s)NN = 130 GeV at RHIC. The spectra are exponential in...

STAR detector overview (2003)

Ackermann, K. H., Adams, N., Adler, C., Ahammed, Z., Ahmad, S., Allgower, C., ...

An introduction to the STAR detector and a brief overview of the physics goals of the experiment are presented. (C) 2002 Elsevier Science B.V. All rights reserved.

Net charge fluctuations in Au+Au collisions at root s(NN)=130 GeV (2003)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We present the results of charged particle fluctuations measurements in Au+Au collisions at rootS(NN)=130 GeV using the STAR detector. Dynamical fluctuations measurements are presented for inclusive...

Evidence from d+Au measurements for final-state suppression of high-p(T) hadrons in Au plus Au collisions at RHIC (2003)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We report measurements of single-particle inclusive spectra and two-particle azimuthal distributions of charged hadrons at high transverse momentum (high p(T)) in minimum bias and central d+Au...

Transverse-momentum and collision-energy dependence of high-p(T) hadron suppression in Au+Au collisions at ultrarelativistic energies (2003)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

We report high statistics measurements of inclusive charged hadron production in Au+Au and p+p collisions at rootS(NN)=200 GeV. A large, approximately constant hadron suppression is observed in...

Pion-kaon correlations in central Au+Au collisions at root s(NN)=130 GeV (2003)

Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ...

Pion-kaon correlation functions are constructed from central Au+Au STAR data taken at roots(NN)=130 GeV by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). The results suggest that...

Narrowing of the balance function with centrality in Au plus Au collisions at root s(NN)=130 GeV (2003)

Adams, J., Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., ...

The balance function is a new observable based on the principle that charge is locally conserved when particles are pair produced. Balance functions have been measured for charged particle pairs and...

Azimuthal anisotropy and correlations in the hard scattering regime at RHIC (2003)

Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., Anderson, M., ...

Azimuthal anisotropy (v(2)) and two-particle angular correlations of high p(T) charged hadrons have been measured in Au+Au collisions at roots(NN) = 130 GeV for transverse momenta up to 6 GeV/c,...

Disappearance of back-to-back high-p(T) hadron correlations in central Au+Au collisions at root s(NN)=200 GeV (2003)

Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., Anderson, M., ...

Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudorapidity range and full azimuth in Au+Au and p+p collisions at roots(NN)=200 GeV. The...

Strange antiparticle-to-particle ratios at mid-rapidity in root s(NN)=130 GeV Au+Au collisions (2003)

Adams, J., Adler, C., Ahammed, Z., Allgower, C., Amonett, J., Anderson, B. D., ...

Values of the ratios in the mid-rapidity yields of (&ULambda;) over bar/Lambda = 0.71 +/- 0.01(stat.) +/- 0.04(sys.), (&UXi;) over bar (+)/Xi(-) = 0.83 +/- 0.04(stat.) +/- 0.05(sys.), (&UOmega;) over...

On the Duality Theory of Convex Objects (2001)

Brinkhuis, J., Tikhomirov, V.

We consider the classical duality operators for convex objects such as the polar of a convex set containing the origin, the dual norm, the Fenchel-transform of a convex function and the conjugate of...

Electron Identification with a Prototype of the Transition Radiation Tracker for the ATLAS experiment (1998)

Åkesson, T, Antonov, A, Bondarenko, V, Bychkov, V, Carling, H, Commichau, V, ...

A prototype of the Transition Radiation Tracker (TRT) for the ATLAS detector at the LHC has been built and tested. The TRT is an array of straw tubes which integrate tracking and electron...

Photoinduced anisotropy in Pr-doped sulfide glasses with varying composition and Pr content (1998)

Tikhomirov, V, Adriaenssens, Guy; U0002272, Krasteva, V, Sigel, G, Kirchhof, J, ...

Metastable photoinduced anisotropy (PA) generated by linearly polarized sub-bandgap light is reported for undoped and Pr-doped Ge-S-I, Ge-Ga-S and As-Ga-S glasses with varying composition and Pr...

Appearance and reorientation of photoinduced anisotropy in chalcogenide glassy films (1996)

Lyubin, V, Klebanov, M, Tikhomirov, V, Adriaenssens, Guy; U0002272

The kinetics of appearance and reorientation of photoinduced dichroism (a manifestation of photoinduced anisotropy) is studied in chalcogenide glassy films by means of the polarization modulation...

A study of electron-muon pair production in 450 GeV/c pBe collisions (1996)

Åkesson, T, Almehed, S, Angelis, Aris L S, Antos, J, Atherton, Henry W, Aubry, P, ...

We report on the production of $e^{\pm}\mu^{\mp}$ pairs in $450\GeVc$ {\em pBe} collisions at the CERN SPS. The $e\mu$ signal, which has average missing energy of 21~GeV, is shown to be consistent...

Elements of the Theory of Extrema

V. Tikhomirov

The following four questions could be asked about each extremal problem: 1. What are the conditions for an extremum of the problem (necessary, sufficient, necessary and sufficient)? 2. How to...

On the duality theory of convex objects

J. Brinkhuis, V. Tikhomirov

There is no abstract available for this report.

On the Duality Theory of Convex Objects

J. Brinkhuis, V. Tikhomirov

We consider the classical duality operators for convex objects such as the polar of a convex set containing the origin, the dual norm, the Fenchel-transform of a convex function and the conjugate of...

A simple view on convex analysis and its applications

Brinkhuis, J., Tikhomirov, V.

Our aim is to give a simple view on the basics and applications of convex analysis. The essential feature of this account is the systematic use of the possibility to associate to each convex...