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LHCf Papers

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2015-07-28
19:50
Measurements of longitudinal and transverse momentum distributions for neutral pions in the forward-rapidity region with the LHCf detector / Adriani, O. ; Berti, E. ; Bonechi, L. ; Bongi, M. ; D’Alessandro, R. ; Del Prete, M. ; Haguenauer, M. ; Itow, Y. ; Kasahara, K. ; Kawade, K. et al. /LHCf
The transverse and longitudinal momentum distributions for inclusive neutral pions in the very forward rapidity region have been measured with the Large Hadron Collider forward detector in proton–proton collisions at sqrt(s) = 2.76 and 7TeV and in proton–lead collisions at nucleon–nucleon center-of-mass energies of sqrt(s_NN) = 5.02TeV at the LHC. Such momentum distributions in proton–proton collisions are compatible with the hypotheses of limiting fragmentation and Feynman scaling. [...]
CERN-PH-EP-2015-201.- Geneva : CERN, 2015 - 26. Draft (restricted): PDF; Fulltext: PDF;

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2015-03-13
07:51
Measurement of very forward neutron energy spectra for 7 TeV proton--proton collisions at the Large Hadron Collider / LHCf Collaboration
The Large Hadron Collider forward (LHCf) experiment is designed to use the LHC to verify the hadronic-interaction models used in cosmic-ray physics. [...]
arXiv:1503.03505 ; CERN-PH-EP-DRAFT-LHCF-2015-001 ; CERN-PH-EP-2015-056.
- 2015. - 10 p.
Preprint - Full text

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2014-03-25
03:44
Transverse momentum distribution and nuclear modification factor of forward neutral pion in proton–lead collisions at $\sqrt{s_{NN}}$= 5.02 TeV / LHCf Collaboration
The transverse momentum ($p_\text{T}$) distribution for inclusive neutral pions in the very forward rapidity region has been measured, with the Large Hadron Collider forward detector (LHCf), in proton--lead collisions at nucleon-nucleon center-of-mass energies of $\sqrt{s_{NN}} = 5.02$TeV at the LHC. The $p_\text{T}$ spectra obtained in the rapidity range $-11.0 < y_\text{lab} < -8.9$ and $0 < p_\text{T} < 0.6$GeV (in the detector reference frame) show a strong suppression of the production of neutral pions after taking into account ultra-peripheral collisions. [...]
arXiv:1403.7845; CERN-PH-EP-2014-059.- Geneva : CERN, 2014 - 13 p. - Published in : Phys. Rev. C 89 (2014) 065209 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF; External link: Preprint

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2013-07-22
15:08
LHCf detector performance during the 2009-2010 LHC run / LHCf collaboration
LHCf has successfully completed the operation during the LHC 2009–2010 period and the detectors were removed in July 2010. The event trigger, data analysis and background have been intensively studied in order to derive inclusive single photon and 0 spectra. [...]
CERN-PH-EP-2013-142.- Geneva : CERN, 2013 - 26 p. - Published in : Int. J. Mod. Phys. A 28 (2013) 1330036 Draft (restricted): PDF; Fulltext: PDF; World Scientific Open Access article: PDF;

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2012-05-17
11:01
Measurement of forward neutral pion transverse momentum spectra for $\sqrt{s}$ = 7TeV proton-proton collisions at LHC / LHCf Collaboration
The inclusive production rate of neutral pions in the rapidity range greater than $y=8.9$ has been measured by the Large Hadron Collider forward (LHCf) experiment during LHC $\sqrt{s}=7$\,TeV proton-proton collision operation in early 2010. This paper presents the transverse momentum spectra of the neutral pions. [...]
arXiv:1205.4578; CERN-PH-EP-2012-145.- Geneva : CERN, 2012 - 15 p. - Published in : Phys. Rev. D 86 (2012) 092001 APS Open Access article: PDF; Draft (restricted): PDF; External link: Preprint

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2012-03-27
12:28
Luminosity determination in $\sqrt{s}$ = 7 TeV proton collisions using the LHCf Front Counter at LHC / Taki, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Adriani, O (INFN, Florence ; Florence U.) ; Bonechi, L (INFN, Florence) ; Bongi, M (INFN, Florence) ; Castellini, G (INFN, Florence ; Florence U.) ; D'Alessandro, R (INFN, Florence ; Florence U.) ; Fukatsu, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Haguenauer, M (Ecole Polytechnique) ; Itow, Y (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Kasahara, K (Waseda U., RISE) et al.
In the Large Hadron Collider forward (LHCf) experiment, the luminosity is determined with the counting rates of detectors called Front Counter. During the LHCf physics operation at √s = 7 TeV in 2010, two series of calibration run in the conversion factors from the counting rate to the luminosity were carried out on 26th of April and 9th of May. [...]
2012 - Published in : J. Instrum. 7 (2012) T01003 IOP Open Access article: PDF;

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2012-03-27
10:58
Comparison of hadron interaction models with measurement of forward spectra by the LHCf apparatus / Menjo, H ; Adriani, O ; Bonechi, L ; Bongi, M ; Castellini, G ; D'Alessandro, R ; Faus, A ; Fukatsu, K ; Haguenauer, M ; Itow, Y et al.
2011 - Published in : Nuovo Cimento C: 034 (2011) , no. 02, pp. 135-140

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2012-03-27
10:38
Study of Radiation Hardness of Gd2SiO5 scintillator for Heavy Ion Beam / Kawade, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Fukatsu, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Itow, Y (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Masuda, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Murakami, T (NIRS, Chiba) ; Sako,T (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Suzuki, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Suzuki, T (Waseda U., RISE) ; Taki, K (Nagoya U., Solar-Terrestrial Environ. Lab.)
Gd2SiO5 (GSO) scintillator has very excellent radiation resistance, a fast decay time and a large light yield. Because of these features, GSO scintillator is a suitable material for high radiation environment experiments such as those encountered at high energy accelerators. [...]
2011 - Published in : J. Instrum. 6 (2011) T09004 IOP Open Access article: PDF;

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2012-02-15
08:31
Measurement of zero degree inclusive photon energy spectra for $\sqrt{s}$= 900 GeV proton-proton collisions at LHC / LHCf collaboration
The inclusive photon energy spectra measured by the Large Hadron Collider forward (LHCf) experiment in the very forward region of LHC proton-proton collisions at $\sqrt{s}=$ 900 GeV are reported. The results from the analysis of 0.30 $\mathrm{nb^{-1}}$ of data collected in May 2010 in the two pseudorapidity regions of $\eta > 10.15$ and $8.77 < \eta < 9.46$ are compared with the predictions of the hadronic interaction models DPMJET 3.04, EPOS 1.99, PYTHIA 8.145, QGSJET I -.1em I-03 and SIBYLL 2.1, which are widely used in ultra-high-energy cosmic-ray experiments. [...]
arXiv:1207.7183; CERN-PH-EP-2012-048.- Geneva : CERN, 2012 - 16 p. - Published in : Phys. Lett. B 715 (2012) 298-303 Draft (restricted): PDF; Elesevier Open Access article: PDF; External link: Preprint

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2011-04-27
15:37
Monte Carlo study of forward $\pi^{0}$ production spectra to be measured by the LHCf experiment for the purpose of benchmarking hadron interaction models at 10$^{17}$ eV / Menjo, H (INFN, Florence) ; Adriani, O (Florence U. ; INFN, Florence) ; Bonechi, L (Florence U. ; INFN, Florence) ; Bongi, M (INFN, Florence) ; Castellini, G (IFAC, Florence ; INFN, Florence) ; D'Alessandro, R (Florence U. ; INFN, Florence) ; Faus, A (Valencia U., IFIC) ; Fukui, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Haguenauer, M (Ecole Polytechnique) ; Itow, Y (Nagoya U., Solar-Terrestrial Environ. Lab.) et al.
2011 - 8 p. - Published in : Astropart. Phys. 34 (2011) 513-520

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