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Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV

Publication ,  Journal Article
Adamczyk, L; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alakhverdyants, AV; Alekseev, I; Alford, J; Anderson, BD; Anson, CD; Arkhipkin, D; Cui, X ...
Published in: Physical Review D Particles Fields Gravitation and Cosmology
May 16, 2012
Published version (DOI)

We report measurements of the charge-separated W +( -)→e +( -) +ν e(ν ̄e) and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV. These results are based on 13.2pb -1 of data recorded in 2009 by the STAR detector at RHIC. Production cross sections for W bosons that decay via the eν channel were measured to be σ(pp→W +X)•BR(W +→e +ν e)=117.3±5.9(stat)±6.2(syst)±15.2(lumi)pb, and σ(pp→W -X)•BR(W -→e -ν ̄e)=43.3±4.6(stat)±3.4(syst) ±5.6(lumi)pb. For Z/γ * production, σ(pp→Z/γ *X)•BR(Z/γ *→e +e -)=7.7±2.1(stat)-0.9+0. 5(syst)±1.0(lumi)pb was measured for di-lepton invariant masses me +e - between 70 and 110GeV/c2. First measurements of the W cross section ratio, σ(pp→W +X)/σ(pp→W -X), at √s=500GeV are also reported. Theoretical predictions, calculated using recent parton distribution functions, are found to agree with the measured cross sections. © 2012 American Physical Society.

Duke Scholars

Anselm G. Vossen
Author Anselm G. Vossen Physics

Published In

Physical Review D Particles Fields Gravitation and Cosmology

DOI

10.1103/PhysRevD.85.092010

EISSN

1550-2368

ISSN

1550-7998

Publication Date

May 16, 2012

Volume

85

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

APA
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ICMJE
MLA
NLM
Adamczyk, L., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alakhverdyants, A. V., Alekseev, I., … Hamed, A. (2012). Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV. Physical Review D Particles Fields Gravitation and Cosmology, 85(9). https://doi.org/10.1103/PhysRevD.85.092010
Adamczyk, L., G. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, et al. “Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV.” Physical Review D Particles Fields Gravitation and Cosmology 85, no. 9 (May 16, 2012). https://doi.org/10.1103/PhysRevD.85.092010.
Adamczyk L, Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, et al. Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV. Physical Review D Particles Fields Gravitation and Cosmology. 2012 May 16;85(9).
Adamczyk, L., et al. “Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV.” Physical Review D Particles Fields Gravitation and Cosmology, vol. 85, no. 9, May 2012. Scopus, doi:10.1103/PhysRevD.85.092010.
Adamczyk L, Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Aschenauer E, Averichev GS, Balewski J, Banerjee A, Barnovska Z, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Butterworth J, Cai XZ, Caines H, Calderón De La Barca Sánchez M, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Chwastowski J, Codrington MJM, Corliss R, Cramer JG, Crawford HJ, Cui X, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derradi De Souza R, Dhamija S, Didenko L, Ding F, Dion A, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunkelberger LE, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Eun L, Evdokimov O, Fatemi R, Fazio S, Fedorisin J, Fersch RG, Filip P, Finch E, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Gliske S, Gorbunov YN, Grebenyuk OG, Grosnick D, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A. Measurement of the W→eν and Z/γ *→e +e - production cross sections at mid-rapidity in proton-proton collisions at √s=500GeV. Physical Review D Particles Fields Gravitation and Cosmology. 2012 May 16;85(9).

Published In

Physical Review D Particles Fields Gravitation and Cosmology

DOI

10.1103/PhysRevD.85.092010

EISSN

1550-2368

ISSN

1550-7998

Publication Date

May 16, 2012

Volume

85

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences