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Showing 2007Show all

141 papers · 1 filter

nucl-ex2007★ 44 cited

Source breakup dynamics in Au+Au Collisions at sqrt(s_NN)=200 GeV via three-dimensional two-pion source imaging

PHENIX Collaboration, S. Afanasiev

A three-dimensional (3D) correlation function obtained from mid-rapidity, low pT pion pairs in central Au+Au collisions at sqrt(s_NN)=200 GeV is studied. The extracted model-indepe…

hep-ex2007★ 14 cited

Measurement of Time-Dependent CP-Violating Parameters in B0 -> K0S K0S decays

Belle Collaboration, Y. Nakahama, K. Sumisawa

We report a measurement of the CP-violating parameters in B0->K0S K0S decays based on a data sample of 657 million BBbar pairs collected at the Y(4S) resonance with the Belle detec…

astro-ph2007★ 48 cited

On the Origin of Bimodal Horizontal-Branches in Massive Globular Clusters: The Case of NGC 6388 and NGC 6441

Suk-Jin Yoon, Seok-Joo Joo, Chang H. Ree +3

Despite the efforts of the past decade, the origin of the bimodal horizontal-branch (HB) found in some globular clusters (GCs) remains a conundrum. Inspired by the discovery of mul…

astro-ph2007★ 381 cited

A Search for Extended Ultraviolet Disk (XUV-disk) Galaxies in the Local Universe

David A. Thilker, Luciana Bianchi, Gerhardt Meurer +26

We have initiated a search for extended ultraviolet disk (XUV-disk) galaxies in the local universe. Herein, we compare GALEX UV and visible--NIR images of 189 nearby (D40 Mpc) S…

astro-ph2007★ 51 cited

Ultraviolet, Optical, and Infrared Constraints on Models of Stellar Populations and Dust Attenuation

Benjamin D. Johnson, David Schiminovich, Mark Seibert +19

The color of galaxies is a fundamental property, easily measured, that constrains models of galaxies and their evolution. Dust attenuation and star formation history (SFH) are the…

hep-ph2007★ 16 cited

Study of the exclusive decays in the MSSM with and without R-parity violation

C. S. Kim, Ru-Min Wang

We study the exclusive decays in the MSSM with and without R-parity violation. From the experimental measurements of branching ratios $\m…

hep-ph2007★ 6 cited

Custodial bulk Randall-Sundrum model and B->K* l+ l'-

Sanghyeon Chang, C. S. Kim, Jeonghyeon Song

The custodial Randall-Sundrum model based on SU(2)_L X SU(2)_R X U(1)_(B-L) generates new flavor-changing-neutral-current (FCNC) phenomena at tree level, mediated by Kaluza-Klein n…

cond-mat.mtrl-sci2007★ 386 cited

Origins of anomalous electronic structures of epitaxial graphene on silicon carbide

Seungchul Kim, Jisoon Ihm, Hyoung Joon Choi +1

On the basis of first-principles calculations, we report that a novel interfacial atomic structure occurs between graphene and the surface of silicon carbide, destroying the Dirac…

astro-ph2007★ 56 cited

A Spectro-photometric Search for Galaxy Clusters in SDSS

Joo H. Yoon, Kevin Schawinski, Yun-Kyeong Sheen +2

Recent large-scale galaxy spectroscopic surveys, such as the Sloan Digital Sky Survey (SDSS), enable us to execute a systematic, relatively-unbiased search for galaxy clusters. Suc…

math.PR2007★ 30 cited

A Birthday Paradox for Markov chains with an optimal bound for collision in the Pollard Rho algorithm for discrete logarithm

Jeong Han Kim, Ravi Montenegro, Yuval Peres +1

We show a Birthday Paradox for self-intersections of Markov chains with uniform stationary distribution. As an application, we analyze Pollard's Rho algorithm for finding the discr…

astro-ph2007★ 321 cited

The UV-Optical Color Magnitude Diagram II: Physical Properties and Morphological Evolution On and Off of a Star-Forming Sequence

David Schiminovich, Ted K. Wyder, D. Christopher Martin +23

We use the UV-optical color magnitude diagram in combination with spectroscopic and photometric measurements derived from the SDSS spectroscopic sample to measure the distribution…

nucl-ex2007★ 109 cited

Cold Nuclear Matter Effects on J/Psi as Constrained by Deuteron-Gold Measurements at sqrt(s_NN) = 200 GeV

PHENIX Collaboration, A. Adare

We present a new analysis of J/psi production yields in deuteron-gold collisions at sqrt(s_NN) = 200 GeV using data taken by the PHENIX experiment in 2003 and previously published…

hep-ex2007★ 66 cited

Search for Lepton Flavor Violating tau Decays into Three Leptons

Y. Miyazaki

We search for lepton-flavor-violating tau decays into three leptons (electron or muon) using 535 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- c…

astro-ph2007

Recent star formation in high-redshift early-type galaxies: insights from the rest-frame UV

S. Kaviraj, S. K. Yi, E. Gawiser +4

We combine deep UBVRIzJK photometry from the MUSYC survey with redshifts from the COMBO-17 survey to study the rest-frame ultraviolet (UV) properties of 674 high-redshift (0.5<z<1)…

hep-ph2007★ 3 cited

Leptogenesis in a seesaw model with Fritzsch type lepton mass matrices

Y. H. Ahn, Sin Kyu Kang, C. S. Kim +1

We investigate how the baryon asymmetry of our universe via leptogenesis can be achieved within the framework of the seesaw model with Fritzsch type lepton mass matrices proposed b…

hep-ph2007★ 318 cited

Heavy Ion Collisions at the LHC - Last Call for Predictions

S. Abreu, S. V. Akkelin, J. Alam +164

This writeup is a compilation of the predictions for the forthcoming Heavy Ion Program at the Large Hadron Collider, as presented at the CERN Theory Institute 'Heavy Ion Collisions…

hep-th2007★ 68 cited

Slowly Rotating Charged Gauss-Bonnet Black holes in AdS Spaces

Hyeong-Chan Kim, Rong-Gen Cai

Rotating charged Gauss-Bonnet black hole solutions in higher dimensional (), asymptotically anti-de Sitter spacetime are obtained in the small angular momentum limit. The ang…

hep-ph2007★ 32 cited

The rare decays , and in the R-parity violating supersymmetry

Jian-Jun Wang, Ru-Min Wang, Yuan-Guo Xu +1

We study the rare decays , and in the R-parity violating supersymmetric standard…

hep-ph2007★ 73 cited

Critical behavior of charmonia across the phase transition: A QCD sum rule approach

Kenji Morita, Su Houng Lee

We investigate medium-induced change of mass and width of J/psi and eta_c across the phase transition in hot gluonic matter using QCD sum rules. In the QCD sum rule approach, the m…

hep-ex2007★ 54 cited

Study of B -> D** l nu with full reconstruction tagging

Dmitri Liventsev

We report a study of semileptonic B decays to P-wave D** mesons. Semileptonic decay to D*_2 meson is observed for the first time and its product branching ratio is measured to be B…

astro-ph2007★ 18 cited

Clustering Properties of restframe UV selected galaxies I: the correlation length derived from GALEX data in the local Universe

Bruno Milliard, Sebastien Heinis, Jeremy Blaizot +25

We present the first measurements of the angular correlation function of galaxies selected in the far (1530 A) and near (2310 A) Ultraviolet from the GALEX survey fields overlappin…

hep-ex2007★ 29 cited

Measurement of CP Asymmetries and Branching Fractions in a Time-Dependent Dalitz Analysis of B^0-->(rho pi)^0 and a Constraint on the Quark Mixing Angle phi_2

The Belle Collaboration, A. Kusaka, C. C. Wang

We present the results of a time-dependent Dalitz plot analysis of B0 --> pi+ pi- pi0 decays based on a 414/fb data sample that contains 449 x 10^6 BB pairs. The data was collected…

hep-ex2007★ 180 cited

Observation of anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance

The Belle Collaboration, K. -F. Chen, W. -S. Hou +2

We report the first observation of e+e- -> Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, and first evidence for e+e- -> Upsilon(3S)pi+pi-, Upsilon(1S)K+K-, near the peak of the Upsilon(5S)…

hep-ph2007★ 27 cited

Low Scale Leptogenesis and Dark Matter Candidates in an Extended Seesaw Model

H. Sung Cheon, Sin Kyu Kang, C. S. Kim

We consider a variant of seesaw mechanism by introducing extra singlet neutrinos and singlet scalar boson, and show how low scale leptogenesis is successfully realized in this scen…