Extraction of the width of the W boson from measurements of $\sigma(p\vec{p} \rightarrow W + X) X B(W \rightarrow e\nu)$ and $\sigma(p\vec{p} \rightarrow Z + X) X B(Z \rightarrow ee)$ and their ratio

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HAL Id: in2p3-00004665

http://hal.in2p3.fr/in2p3-00004665

Submitted on 6 Apr 2000

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Extraction of the width of the W boson from

measurements of σ(p⃗p

→ W + X)XB(W → eν) and

σ(p⃗

p

→ Z + X)XB(Z → ee) and their ratio

B. Abbott, M. Abolins, V. Abramov, B.S. Acharya, I. Adam, D.L. Adams, M.

Adams, S. Ahn, V. Akimov, G.A. Alves, et al.

To cite this version:

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Fermi National Accelerator Laboratory

FERMILAB-Pub-99/171-E D0

Extraction of the Width of the W Boson from Measurements of

(p ¯p

W+X) B(W

e ) and (p ¯p

Z+X) B(Z

ee) and their

Ratio

B. Abbott et al. The D0 Collaboration

Fermi National Accelerator Laboratory P.O. Box 500, Batavia, Illinois 60510

June 1999

Submitted to Physical Review D

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Luminosity (10

30

cm

-2

s

-1

)

Fraction of Events

|z_e-z_standard| > 10 cm

|z₁-z₂| > 10 cm

Dielectron Mass (GeV)

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10 -1

1

10

2

50

60

70

80

90 100 110 120 130

Dielectron Invariant Mass (CC-CC) GeV

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10 -1

1

10

2

50

60

70

80

90 100 110 120 130

Dielectron Invariant Mass (CC-EC) GeV

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10 -1

1

10

2

50

60

70

80

90 100 110 120 130

Dielectron Invariant Mass (EC-EC) GeV

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Center of Mass Energy (TeV)

W, Z

• B (pb)

Center of Mass Energy (TeV)

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W

• B (pb)

Z

• B (pb)

1a(e)

1a( )

1b(e)

2000

2500

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Extraneous Energy Density (GeV / / )

W Electron ID Efficiency

CC, W + 0 Jets

EC, W + 0 Jets

CC, W + 0 Jets, s = 630 GeV

EC, W + 0 Jets, s = 630 GeV

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