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H. Bachacou

Lawrence Berkeley National Laboratory

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Featured researches published by H. Bachacou.

Physical Review D | 1999

Measurements of Masses in SUGRA Models at LHC

H. Bachacou; I. Hinchliffe; F. Paige

This paper presents new measurements in a case study of the minimal SUGRA model with m_0=100 GeV, mhalf=300 GeV, A_0=0, tan(beta)=2.1, and mu=+1 based on four-body distributions from three-step decays and on minimum masses in such decays. These measurements allow masses of supersymmetric particles to be determined without relying on a model. The feasibility of testing slepton universality at the ~0.1% level at high luminosity is discussed. In addition, the effect of enlarging the parameter space of the minimal SUGRA model is discussed. The direct production of left handed sleptons and the non-observation of additional structure in the dilepton invariant mass distributions is shown to provide additional constraints.

Physical Review D | 2002

Measurement of the B+ total cross section and B+ differential cross section d sigma/dp(T) in p(p)over-bar collisions at root s=1.8 TeV

Darin Acosta; T. Affolder; H. Akimoto; M. Albrow; P. Amaral; D. Ambrose; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; A. Artikov; T. Asakawa; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; S. Bailey; P. De Barbara; A. Barbaro-Galtieri; V. E. Barnes; Bruce Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Belforte; W. H. Bell; G. Bellettini

We present measurements of the B+ meson total cross section and differential cross section

Physical Review D | 2002

Measurement of the ratio of b quark production cross sections in p̄p collisions at √s = 630 GeV and √s = 1800 GeV

Darin Acosta; T. Affolder; H. Akimoto; M. Albrow; D. Ambrose; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; A. Artikov; T. Asakawa; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; S. Bailey; P. De Barbara; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Belforte; W. H. Bell; G. Bellettini

d\sigma/ dp_T

Physical Review D | 2004

Measurement of the average time-integrated mixing probability of b-flavored hadrons produced at the Fermilab Tevatron

Darin Acosta; T. Affolder; H. Akimoto; M. Albrow; D. Ambrose; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; A. Artikov; T. Asakawa; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; S. Bailey; P. de Barbaro; A. Barbaro-Galtieri; V. E. Barnes; Bruce Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Behari; S. Belforte; W. H. Bell

. The measurements use a

Physical Review D | 2000

Measurements of masses in supergravity models at CERN LHC

H. Bachacou; I. Hinchliffe; F. Paige

98\pm 4

Physical Review Letters | 2005

Measurement of the W+W- production cross section in pp̄ collisions at s=1.96TeV using dilepton events

Darin Acosta; J. Adelman; T. Affolder; T. Akimoto; M. Albrow; D. Ambrose; S. Amerio; D. Amidei; A. Anastassov; K. Anikeev; A. Annovi; J. Antos; M. Aoki; G. Apollinari; T. Arisawa; J. F. Arguin; A. Artikov; W. Ashmanskas; A. Attal; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; A. Barbaro-Galtieri; G. J. Barker; V. E. Barnes; B. A. Barnett; S. Baroiant; M. Barone

pb^{-1} sample of

Physical Review D | 2003

Search for the flavor-changing neutral current decay D0→ μ+μ-in pp̄ collisions at √s = 1.96TeV

Darin Acosta; T. Affolder; M. H. Ahn; T. Akimoto; M. Albrow; D. Ambrose; D. Amidei; A. Anastassov; K. Anikeev; A. Annovi; J. Antos; M. Aoki; G. Apollinari; J. F. Arguin; T. Arisawa; A. Artikov; T. Asakawa; W. Ashmanskas; A. Attal; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; S. Bailey; A. Barbaro-Galtieri; G. J. Barker; V. E. Barnes; B. A. Barnett; S. Baroiant

p \bar p

Physical Review D | 2002

Comparison of the isolated direct photon cross sections in pp̄ collisions at √s = 1.8 TeV and √s = 0.63 TeV

Darin Acosta; T. Affolder; H. Akimoto; M. Albrow; D. Ambrose; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; A. Artikov; T. Asakawa; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; S. Bailey; P. de Barbaro; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Belforte; W. H. Bell; G. Bellettini

collisions at

Physical Review Letters | 2005

Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV

Darin Acosta; T. Affolder; M. Albrow; D. Ambrose; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; A. Artikov; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Behari; S. Belforte; W. H. Bell; G. Bellettini; J. Bellinger; D. Benjamin; A. Beretvas

\sqrt{s}=1.8

Physical Review Letters | 2005

Evidence for bso→ decay and measurements of branching ratio and ACP for B+→K+

Darin Acosta; J. Adelman; T. Affolder; T. Akimoto; M. Albrow; D. Ambrose; S. Amerio; D. Amidei; A. Anastassov; K. Anikeev; A. Annovi; J. Antos; M. Aoki; G. Apollinari; T. Arisawa; J.-F. Arguin; A. Artikov; W. Ashmanskas; A. Attal; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; A. Barbaro-Galtieri; G. J. Barker; V. E. Barnes; B. A. Barnett; S. Baroiant; G. Bauer

TeV collected by the CDF detector. Charged

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